python---CRM用户关系管理

Day1:项目分析

一：需求分析

二：CRM角色功能介绍

三：业务场景分析

销售：
    1.销售A 从百度推广获取了一个客户，录入了CRM系统，咨询了Python课程，但是没有报名
    2.销售B 从qq群获取一个客户，成功使他报名Python班，然后给他发送了报名连接，等待用户填写完毕后，将他添加到Python具体的学习班级中
    3.销售C 打电话给之前的一个客户，说服他报名Python课程，但是没有成功，更新了跟踪记录
    4.销售D 获取了一个客户，录入信息时，发现此客户已经存在，不允许重复录入，随后通知相应的原负责人跟进
    5.销售E 从客户库中获取了，超过一个月未跟进的客户，进行再次跟进
    6.销售主管 查看了部门本月的销售报表，包括来源分析，成单率分析，班级报名数量分析，销售额环比，同比

学员：
    1.客户A 填写了销售发来的报名连接，上传了个人的证件信息，提交，之后收到邮件，告知报名成功，并为他开通了学员账号，升级为学员A
    2.学员A 登录学员系统，看到自己的合同，报名的班级，课程大纲
    3.学员A 提交了Python课程当时课时作业
    4.学员A 查看自己的Python课程成绩，排名
    5.学员A 搜索问题，未找到答案，录入一条问题
    6.学员A 转介绍学员，录入其信息

讲师：
    1.讲师A 登录CRM系统，查看自己管理的班级列表
    2.讲师A 进入Python 5期课程，创建第3节的上课记录，填写了本节课内容，作业要求
    3.讲师A 在课程中点名，对点名情况进行录入，标记相关状态
    4.讲师A 批量下载所有学员的课时作业，给每个学员在线批注了成绩+状态

管理员：
    1.创建课程 C++，Python..
    2.创建校区 上海，北京..
    3.创建班级 C++35期，Python27期
    4.创建账号 ABCD
    5.创建了销售，讲师，学员角色
    6.为账号分配到对应的角色，将ABCD分配给销售
    7.创建相关权限
    8.为销售角色分配了相关权限

四：表结构设计

数据库关联模型

Django表结构实现

from django.db import models
from django.contrib.auth.models import User
# Create your models here.

class UserProfile(models.Model):
    '''
    用户信息表：
    含有讲师，销售，管理员这些正式人员
    '''
    user = models.OneToOneField(User)  #使用的是Django自带的用户验证Username, password and email are required. Other fields are optional.

    name = models.CharField(max_length=64,verbose_name="姓名")
    role = models.ManyToManyField("Role",blank=True)  #,null=Truenull has no effect on ManyToManyField.,null对于manytomanyfield无作用，会报警

    def __str__(self):
        return self.name

class Role(models.Model):
    '''
    角色表：学员，讲师，销售，管理员
    '''
    name = models.CharField(max_length=64,unique=True)
    menus = models.ManyToManyField("Menu",blank=True)
    def __str__(self):
        return self.name

class Menu(models.Model):
    '''
    动态菜单
    '''
    name = models.CharField("菜单名",max_length=64)
    url_type_choices = (
        (0,"absolute"), #绝对路径/Sale/index.html
        (1,"dynamic"),  #动态url，根据url()方法中的name获取
    )

    url_type = models.SmallIntegerField(choices=url_type_choices)
    url_name = models.CharField("URL",max_length=128)

    def __str__(self):
        return self.name

class CustumerInfo(models.Model):
    '''
    客户信息表：联系方式，姓名等
    '''

    name = models.CharField(max_length=64,null=True,blank=True) #开始咨询的时候允许为空
    contact_type_choices = ((0,'qq'),(1,"微信"),(2,'手机'))
    contact_type = models.SmallIntegerField(choices=contact_type_choices,default=0)
    contact = models.CharField(max_length=64,unique=True)
    source_choices = (
        (0,'QQ群'),
        (1,"51CTO"),
        (2,"百度推广"),
        (3,"知乎"),
        (4,"转介绍"),
        (5,"其他")
    )
    source = models.SmallIntegerField(choices=source_choices)
    referral_from = models.ForeignKey("self",blank=True,null=True,verbose_name="转介绍人员")

    consult_courses = models.ManyToManyField("Course",verbose_name="咨询课程")  #咨询的课程，允许咨询多门
    consult_content = models.TextField("咨询内容",blank=True)
    status_choices = ((0,"未报名"),(1,"已报名"),(2,"已退学"))
    status = models.SmallIntegerField(choices=status_choices)

    consultant = models.ForeignKey("UserProfile",verbose_name="课程顾问")

    date = models.DateField(auto_now_add=True)

    def __str__(self):
        return self.name

class CustumerFollowUp(models.Model):
    '''
    客户跟踪记录表：跟踪进度
    '''
    customer = models.ForeignKey("CustumerInfo")
    content = models.TextField(verbose_name="跟进内容")
    user = models.ForeignKey("UserProfile",verbose_name="跟进人员")
    status_choices = (
        (0,"近期无报名计划"),
        (1,"一个月内报名"),
        (2,"2周内报名"),
        (3,"已报名"),
    )

    status = models.SmallIntegerField(choices=status_choices)
    date = models.DateField(auto_now_add=True)

    def __str__(self):
        return self.content

class Student(models.Model):
    '''
    学员信息表：（未报名的客户在客户表中），报名成功的在学员表
    '''
    customer = models.ForeignKey("CustumerInfo")
    class_grades = models.ManyToManyField("ClassList")  #学员可以报多门课程

    def __str__(self):
        return self.customer.name

class Course(models.Model):
    '''
    课程表
    '''
    name = models.CharField(max_length=64,verbose_name="课程名称",unique=True)
    price = models.PositiveSmallIntegerField()  #必须为正
    period = models.PositiveSmallIntegerField(verbose_name="课程周期(月)",default=5)
    outline = models.TextField(verbose_name="大纲")

    def __str__(self):
        return self.name

class ClassList(models.Model):
    '''
    班级列表
    '''
    branch = models.ForeignKey("Branch")    #校区关联
    couser = models.ForeignKey("Course")

    class_type_choices = (
        (0,"脱产"),
        (1,"周末"),
        (2,"网络班")
    )
    class_type = models.SmallIntegerField(choices=class_type_choices,default=0)

    semester = models.SmallIntegerField(verbose_name="学期")
    teachers = models.ManyToManyField("UserProfile",verbose_name="讲师")
    start_date = models.DateField("开班日期")
    graduate_date = models.DateField("毕业日期",blank=True,null=True)

    def __str__(self):
        return "%s (%s)期"%(self.couser,self.semester)

    class Meta:
        unique_together = ('branch','class_type',"couser","semester") #联合唯一

class CourseRecord(models.Model):
    '''
    上课记录:该节课程内容等
    '''
    class_grade = models.ForeignKey("ClassList",verbose_name="上课班级")
    day_num = models.PositiveSmallIntegerField(verbose_name="课程节次")
    teacher = models.ForeignKey("UserProfile")
    title = models.CharField("本节主题",max_length=64)
    content = models.TextField("本节内容")
    has_homework = models.BooleanField("本节是否有作业",default=True)
    homework = models.TextField("作业需求",blank=True,null=True)
    date = models.DateTimeField(auto_now_add=True,verbose_name="上课时间")
    def __str__(self):
        return "%s第(%s)节"%(self.class_grade,self.day_num )

    class Meta:
        unique_together = ("class_grade","day_num")

class StudyRecord(models.Model):
    '''
    学习记录表：学员考勤，作业，成绩，备注
    '''
    course_record = models.ForeignKey("CourseRecord")
    student = models.ForeignKey("Student")

    score_choices = (
        (100,"A+"),
        (90,"A"),
        (85,"B+"),
        (80,"B"),
        (75,"B-"),
        (70,"C+"),
        (60,"C"),
        (40,"C-"),
        (0,"N/A"),  #不可得not avaliable
        (-50, "D"), #未交作业
        (-100,"COPY")   #抄袭
    )
    score = models.SmallIntegerField(choices=score_choices)

    show_choices = (
        (0,"缺勤"),
        (1,"已签到"),
        (2,"迟到"),
        (3,"早退"),
    )
    show_status = models.SmallIntegerField(choices=show_choices)

    note = models.CharField("情况备注",max_length=128,blank=True,null=True)

    date = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return "%s %s %s"%(self.course_record,self.student,self.score)

class Branch(models.Model):
    '''
    校区
    '''
    name = models.CharField(max_length=64,unique=True)
    addr = models.CharField(max_length=128,blank=True,null=True)
    def __str__(self):
        return self.name

表结构创建

Day2:主要实现功能kingadmin为各个应用实现一个类似于Django自带的数据库管理功能

　　kingadmin目录　　　　　　　　

　　　　销售目录

　　　　学员目录

1.首先我们需要在项目启动后（进入Kingadmin模块中view视图后，能够自动采集所有的应用中需要我们采集的数据库信息）

（1）先设置采集方法：在每个需要我们采集的应用模块中添加上kingadmin.py文件（类似于后台admin会在应用模块的admin.py中采集信息一样）。如上面目录结构，在其中添加了kingadmin.py

from kingadmin.sites import site    #虽然说，每个APP：sale，student都去导入了一次site，但是在python项目中对于同一个模块只会导入一次，所以这本身就是单例模式（使用的是内存中存在的那个）
from kingadmin.admin_base import BaseKingAdmin
from repository import models

print("Sale.kingadmin")

class CustomerAdmin(BaseKingAdmin):
    list_display = ['name','contact_type','contact','source','consult_content','consultant','status','date']
    list_filter = ['source','consultant','status','date']
    search_fields = ['contact','consultant__name']

site.register(models.CustumerInfo,CustomerAdmin)
site.register(models.Role)
site.register(models.Menu)
site.register(models.UserProfile)

Sale模块中kingadmin

from kingadmin.sites import site
from kingadmin.admin_base import BaseKingAdmin
from Student import models

class TestAdmin(BaseKingAdmin):
    list_display = ['name']

site.register(models.TestAdmin,TestAdmin)



----------------------------------------------------------
student模块中自定义一个表
class TestAdmin(models.Model):
    name = models.CharField("姓名",max_length=64)

    def __str__(self):
        return self.name

Student模块中kingadmin

从中发现需要用到一个基类BaseKingAdmin来自于kingadmin模块：是为了防止注册事件时出现为空的现象，而且在基类中添加功能更加方便

class BaseKingAdmin(object):
    pass

admin_base.py中BaseKingAdmin基类

还需要from kingadmin.sites import site，使用到site方法（类似于admin.site.register(模型，自定义模型显示类)）：功能是将各个模块中的数据模型统一添加在一个数据结构中，方便调用

from kingadmin.admin_base import BaseKingAdmin

class AdminSite(object):
    def __init__(self):
        self.enabled_admins = {}

    def register(self,model_class,admin_class=None):
        '''
        注册admin表
        :param model_class:
        :param admin_class:
        :return:
        '''
        app_name = model_class._meta.app_label  #app_label是当前应用的名字  一个应用可以注册多个表
        model_name = model_class._meta.model_name #model_name是表名    和app_lable连接就是数据表全名

        if not admin_class:
            admin_class = BaseKingAdmin()
        else:
            admin_class = admin_class()

        if app_name not in self.enabled_admins:
            self.enabled_admins[app_name] = {}

        admin_class.model = model_class

        self.enabled_admins[app_name][model_name] = admin_class

site = AdminSite()

sites.py中的site方法

将数据统一放入self.enabled_admins{}中，形式为self.enabled_admins[模块][表名] = 自定义模型显示类（默认BaseKingAdmin）

注意：虽然在每个模块中都导入了一次sites模块，使用一次site对象，实际上使用的是同一个site对象

可以使用id(site)查看内存，因为python机制中将一个模块导入后，会将其保存在内存中，下次导入数据的时候，会直接从内存中获取数据（所以大家使用的是一个site对象）
所以说：python模块本身就是单例模式

（2）从settings.py中获取各个模块。创建app_setup.py文件，在项目进入view时去调用该文件，并执行，获取到所有模块的信息

进入views.py自动调用app_setup.kingadmin_auto_discover()方法

from django.shortcuts import render,redirect
from django.contrib.auth import authenticate,login,logout   #快捷操作
from kingadmin import app_setup

app_setup.kingadmin_auto_discover() #用来导入所有含Kingadmin的模块，模块中会去调用相应的Kingadmin文件去注册事件

from kingadmin.sites import site  #发现只导入模块一次，site对象只有一个

---------------------下面实现的是将数据分发给前端-------------------------------------
def get_filter_result(request,querysets):
    filter_conditions = {}
    for k,v in request.GET.items():
        if v:
            filter_conditions[k] = v
    return querysets.filter(**filter_conditions),filter_conditions

def table_obj_list(request,app_name,model_name):
    '''取出指定的数据返给前端'''

    admin_class = site.enabled_admins[app_name][model_name]

    model_class = admin_class.model
    querysets = model_class.objects.all()

    filter_data,filter_conditions = get_filter_result(request,querysets)
    print(filter_conditions)
    admin_class.filter_conditions = filter_conditions   #也可以传值给前端，但是这样也不错


    return render(request,"kingadmin/table_obj_list.html",{"queryset":filter_data,'admin_class':admin_class})

views.py进入后，顺序执行，首先去调用app_setup.kingadmin_auto_discover()方法采集信息

看如何采集各个模块信息：从配置文件中settings的INSTALLED_APPS中获取所有模块信息

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'repository.apps.RepositoryConfig',
    'kingadmin',
    'Student',
    'Sale',
]

settings文件INSTALLED_APPS

views调用了app_setup中的kingadmin_auto_discover()方法自动采集信息，下面看看app_setup文件：实现方法。反向查找

from django import conf　　#实现动态获取配置文件，而不是以目录形式
import importlib

def kingadmin_auto_discover():
    for module in conf.settings.INSTALLED_APPS:
        try:
            # md = importlib.import_module('.kingadmin',module)　　#这个也可以
            md = __import__('%s.kingadmin'%module)  #导入Kingadmin，然后回去执行该文件中的数据，去注册事件（模块导入后，会自动使用site.register方法注册事件）
        except ImportError as e:
            pass

（3）上面将数据采集完毕，方法内存中site对象中，使用app_index视图方法，可以实现后台管理admin首页功能

def app_index(request):return render(request,"kingadmin/app_index.html",{'site':site})

    <div>
    {% for app_name,app_tables in site.enabled_admins.items %}
        <table class="table table-striped">
            <thead>
                <tr>
                    <th>{{ app_name }}</th>
                </tr>
            </thead>
            <tbody>
                {%  for model_name in app_tables %}
                    <tr>
                        <td>
                            <a href="{% url 'table_obj_list' app_name model_name %}">
                                {{ model_name }}
                            </a>
                        </td>
                        <td>ADD</td>
                        <td>Change</td>
                    </tr>
                {% endfor %}
            </tbody>
        </table>
    {% endfor %}
    </div>

前端主要代码

（4）实现点击表名，查看数据的功能

def get_filter_result(request,querysets):
    filter_conditions = {}
    for k,v in request.GET.items():
        if v:
            filter_conditions[k] = v
    return querysets.filter(**filter_conditions),filter_conditions

def table_obj_list(request,app_name,model_name):
    '''取出指定的数据返给前端'''

    admin_class = site.enabled_admins[app_name][model_name]

    model_class = admin_class.model
    querysets = model_class.objects.all()

    filter_data,filter_conditions = get_filter_result(request,querysets)
    print(filter_conditions)
    admin_class.filter_conditions = filter_conditions   #也可以传值给前端，但是这样也不错


    return render(request,"kingadmin/table_obj_list.html",{"queryset":filter_data,'admin_class':admin_class})

table_obj_list方法根据模块和表名去获取site对象中的数据

{% extends "kingadmin/index.html" %}
{% load my_func %}

{% block right-content-container %}
    <h1 class="page-header">APP</h1>
    <form method="get">
    {% for field in admin_class.list_filter %}
        {% build_filter_row field admin_class %}
    {% endfor %}
    <button type="submit" class="btn btn-primary">提交</button>
    </form>
    <div>
        <table class="table table-striped">
            <thead>
                <tr>
                    {% for field in admin_class.list_display %}
                        <th>{{ field }}</th>
                    {% endfor %}
                </tr>
            </thead>
            <tbody>
                {% for item in queryset %}
                    <tr>
                    {% build_table_row item admin_class %}
                    </tr>
                {% endfor %}
            </tbody>
        </table>
    </div>


{% endblock %}

前端

前端使用了自定义模板函数

# coding:utf8
# __author:  Administrator
# date:      2018/5/26 0026
# /usr/bin/env python
from django import template
from django.utils.safestring import mark_safe
from datetime import datetime,timedelta

register = template.Library()

@register.simple_tag
def build_filter_row(field,admin_class):
    model = admin_class.model
    field_obj = model._meta.get_field(field)
    filter_conditions = admin_class.filter_conditions
    try:
        select = "<select name='%s'>"%field
        data_list = field_obj.get_choices(field) #可以获取choices选项和外键
    except AttributeError:
        if field_obj.get_internal_type() in ("DateField","DateTimeField"):
            field = "%s__gte"%field
            select = "<select name='%s'>"%field
            time_now = datetime.now()
            time_list = [
                ["", "---------"],
                [time_now, "today"],
                [time_now - timedelta(7), "七天内"],
                [time_now.replace(day=1), "本月"],
                [time_now - timedelta(90), "三个月内"],
                [time_now.replace(month=1, day=1), "今年内"],
                ['', "ALL"]
            ]

            def turn_date(date_list):
                date_obj, date_str = date_list
                if type(date_obj) is datetime:
                    date_obj = date_obj.strftime("%Y-%m-%d")
                return (date_obj,date_str)

            data_list = map(turn_date,time_list)
        else:
            select = "<select name='%s'>"%field
            data_list = list(model.objects.values_list("id",field))

    for item in data_list:
        if str(item[0]) == filter_conditions.get(field,None):
            option = "<option value='%s' selected>" % str(item[0])
        else:
            option = "<option value='%s'>"%str(item[0])
        option += item[1]
        option += "</option>"
        select += option

    select += "</select>"

    return mark_safe(select)

@register.simple_tag
def build_table_row(obj,admin_class):
    '''生成一条HTML中tr元素'''
    tr = ""
    for field in admin_class.list_display:
        # column_obj = admin_class.model._meta.get_field(field)    #model是获取对应的模型对象
        # if column_obj.choices:
        #     column_data = getattr(obj,"get_%s_display"%field)() #使用方法，要加上()
        # else:
        #     column_data = getattr(obj,field) #使用属性不需要()
        func = "get_"+field+"_display"
        if hasattr(obj,func):
            column_data = getattr(obj,func)()
        else:
            column_data = getattr(obj,field)

        td = "<td>%s</td>"%column_data
        tr += td

    return mark_safe(tr)

my_func.py设置自定义函数

Day3:对上面的功能添加分页，筛选，排序，搜索功能(功能之间的url需要重组)

一：分页实现（在Django自带分页组件下进行扩展）

from django.core.paginator import Paginator

class CustomPagimator(Paginator):
    def __init__(self,current_page,max_page_num,*args,**kwargs):
        self.current_page = int(current_page)  #当前页
        self.max_page_num = max_page_num    #可以显示多少页
        super(CustomPagimator,self).__init__(*args,**kwargs)

    def page_num_range(self):
        # self.num_pages 总页数
        part_num = int(self.max_page_num/2)
        if self.num_pages <= self.max_page_num:
            return range(1, self.num_pages + 1)
        if self.current_page <= part_num:
            return range(1,self.max_page_num+1)
        elif self.current_page+part_num>= self.num_pages:
            return range(self.num_pages-self.max_page_num,self.num_pages+1)
        else:
            return range(self.current_page - part_num, self.current_page + part_num + 1)

分页类代码

    current_page = request.GET.get('_p',1)
    paginator = CustomPagimator.CustomPagimator(current_page=current_page, max_page_num=3,object_list=querysets,per_page=2)  # 传入总数据和每页显示的数据
    try:
        filter_data = paginator.page(current_page)
    except PageNotAnInteger:
        filter_data = paginator.page(1)
    except EmptyPage:
        filter_data = paginator.page(paginator.num_pages)  # num_pages数总页数，最后一页

    page_html = paginator.page_num_range()

分页类的使用

    <div>
        {% build_page_row queryset page_html admin_class %}
    </div>

使用模板函数对分页数据进行url组合

@register.simple_tag
def build_page_row(queryset,page_html,admin_class):
    #先生成条件过滤数据
    filter_conditions = ''
    for k,v in admin_class.filter_conditions.items():
        filter_conditions += "&"+k+'='+v;

    #再生成排序条件
    if admin_class.sort_conditions:
        filter_conditions += "&o="+list(admin_class.sort_conditions.values())[0]

    #在生成搜索条件
    if admin_class.search_conditions:
        filter_conditions += "&_q="+admin_class.search_conditions

    page_str = '<ul class="pagination">'
    if queryset.has_previous():
        page_str += '<li><a href="?_p=%d%s">&laquo;</a></li>'%(queryset.previous_page_number(),filter_conditions)
    for i in page_html:
        if i == queryset.number:
            page_str += '<li class="active"><a href="?_p=%d%s">%d</a></li>'%(i,filter_conditions,i)
        else:
            page_str += '<li><a href="?_p=%d%s">%d</a></li>'%(i,filter_conditions,i)
    if queryset.has_next():
        page_str += '<li><a href="?_p=%d%s">&raquo;</a></li>'%(queryset.next_page_number(),filter_conditions)

    return mark_safe(page_str)

build_page_row模板函数

二：对各个字段筛选（对kingadmin中list_filter字段进行筛选）

1：前端显示

    <div  class="form-group">
        <form method="get" class="form-inline">
        {% for field in admin_class.list_filter %}
            {% build_filter_row field admin_class %}
        {% endfor %}
        {% build_order_filter admin_class %}
        <button type="submit" class="btn btn-primary">提交</button>
        </form>
    </div>

build_filter_row模板函数去获取数据生成标签

2.模板函数去定制标签，在form表单中加入隐藏标签（表示排序和搜索条件）

@register.simple_tag
def build_filter_row(field,admin_class):
    model = admin_class.model
    field_obj = model._meta.get_field(field)
    filter_conditions = admin_class.filter_conditions
    label = """<label class="control-label">%s</label>"""%field
    try:
        select = "<div class='col-md-3'>%s:<select class='form-control' name='%s'>"%(label,field)
        data_list = field_obj.get_choices(field) #可以获取choices选项和外键
    except AttributeError:
        if field_obj.get_internal_type() in ("DateField","DateTimeField"):
            field = "%s__gte"%field
            select = "<div class='col-md-2'>%s:<select class='form-control' name='%s'>"%(label,field)
            time_now = datetime.now()
            time_list = [
                ["", "---------"],
                [time_now, "today"],
                [time_now - timedelta(7), "七天内"],
                [time_now.replace(day=1), "本月"],
                [time_now - timedelta(90), "三个月内"],
                [time_now.replace(month=1, day=1), "今年内"],
                ['', "ALL"]
            ]

            def turn_date(date_list):
                date_obj, date_str = date_list
                if type(date_obj) is datetime:
                    date_obj = date_obj.strftime("%Y-%m-%d")
                return (date_obj,date_str)

            data_list = map(turn_date,time_list)
        else:
            select = "<div class='col-md-3'>%s:<select class='form-control' name='%s'>"%(label,field)
            data_list = list(model.objects.values_list("id",field))

    for item in data_list:
        if str(item[0]) == filter_conditions.get(field,None):
            option = "<option value='%s' selected>" % str(item[0])
        else:
            option = "<option value='%s'>"%str(item[0])
        option += item[1]
        option += "</option>"
        select += option

    select += "</select></div>"

    return mark_safe(select)

build_filter_row模板函数对日期筛选进行自定义，外键或者choices字段使用字段对象获取数据，对于其他的字段使用model获取所有的值，组成select框进行筛选

3.在views中将url中的各个条件，放置到admin_class中，方便模板标签的使用

@login_required
def table_obj_list(request,app_name,model_name):
    '''取出指定的数据返给前端'''

    admin_class = site.enabled_admins[app_name][model_name]

    model_class = admin_class.model
    querysets = model_class.objects.all()   #所有数据

    #搜索后的数据
    querysets,search_conditions = get_search_result(request,querysets,admin_class)
    admin_class.search_conditions = search_conditions

    querysets,filter_conditions = get_filter_result(request,querysets)    #过滤条件后的数据
    admin_class.filter_conditions = filter_conditions   #也可以传值给前端，但是这样也不错

    querysets, sort_conditions = get_order_result(request,querysets,admin_class)
    admin_class.sort_conditions = sort_conditions

    current_page = request.GET.get('_p',1)
    paginator = CustomPagimator.CustomPagimator(current_page=current_page, max_page_num=3,object_list=querysets,per_page=2)  # 传入总数据和每页显示的数据
    try:
        filter_data = paginator.page(current_page)
    except PageNotAnInteger:
        filter_data = paginator.page(1)
    except EmptyPage:
        filter_data = paginator.page(paginator.num_pages)  # num_pages数总页数，最后一页

    page_html = paginator.page_num_range()

    return render(request,"kingadmin/table_obj_list.html",{"queryset":filter_data,'admin_class':admin_class,"page_html":page_html})

注意：我在views中将各个url条件放在admin_class中，方便查询对比（也可以放在变量中分发出来）

4.在views中的url数据获取时将其他_q搜索，o排序，_p分页数据过滤，获取所有数据

def get_filter_result(request,querysets):
    filter_conditions = {}
    for k,v in request.GET.items():
        if k in ("_p","o","_q"):continue
        if v:
            filter_conditions[k] = v
    return querysets.filter(**filter_conditions),filter_conditions

get_filter_result过滤条件，获取querysets数据

推文：python---Django中模型类中Meta元对象了解，可以知道数据模型中的字段对象或者其他所需要的内容

三：对各个字段进行排序（list_display）

1.前端传递排序数据，对于table中的th加上url

            <thead>
                <tr>
                    {% build_title_row admin_class %}
                </tr>
            </thead>

使用模板函数处理

2.模板函数build_title_row 去生成标签

@register.simple_tag
def build_title_row(admin_class):
    #先生成过滤条件
    filter_conditions = ''
    for k, v in admin_class.filter_conditions.items():
        filter_conditions += "&" + k + '=' + v;

    #再生成搜索条件
    if admin_class.search_conditions:
        filter_conditions += "&_q="+admin_class.search_conditions

    icon = """<span class="glyphicon glyphicon-triangle-%s" aria-hidden="true"></span>"""
    title = ''
    th = "<th><a href='?o=%s%s'>%s%s</a></th>"

    try:
        sort_cond = list(admin_class.sort_conditions.keys())[0]
        sort_val = list(admin_class.sort_conditions.values())[0]
    except IndexError:
        sort_cond = None
        sort_val = None
    for counter,field in enumerate(admin_class.list_display):
        if field == sort_cond:
            if sort_val.startswith("-"):
                title += th%(sort_val.strip("-"),filter_conditions,field,icon%"top")
            else:
                title += th%("-"+sort_val,filter_conditions,field,icon%"bottom")
        else:
            title += th%(counter,filter_conditions,field,"")

    return mark_safe(title)

build_title_row中先将过滤和搜索条件组合，再生成排序url（符号倒序，数字代表在admin_class中list_display字段中的索引顺序）

3.views中对我们获取的所有数据，根据前端传递的排序方法进行排序处理

def get_order_result(request,querysets,admin_class):
    order_index = request.GET.get("o")
    sort_conditions = {}
    if order_index:
        index = abs(int(order_index))
        order_by = admin_class.list_display[index]
        if order_index.startswith("-"):
            querysets = querysets.order_by("-"+order_by)
        else:
            querysets = querysets.order_by(order_by)
        sort_conditions[order_by] = order_index

    return querysets,sort_conditions

get_order_result获取排序结果

四：对字段进行搜索（search_fields）

1.前端生成标签时，form表单中需要一起传递其他条件的input隐藏框

    <form class="form-horizontal" method="get" role="form">
          <div class="form-group">
            <div class="col-sm-8">
              <input class="form-control" id="focusedInput" name="_q" placeholder="输入数据开始搜索...." value="{{ admin_class.search_conditions }}" type="text">
              {% build_search_filter admin_class %}
            </div>
              <div class="col-sm-2">
                  <input type="submit" class="btn btn-primary" value="Search">
              </div>
          </div>
    </form>

前端数据form

2.使用模板函数生成标签

@register.simple_tag
def build_search_filter(admin_class):
    '''向搜索框中添加入过滤条件和排序条件'''
    # 先生成过滤条件
    inp = ""
    for k, v in admin_class.filter_conditions.items():
        inp += """<input type="hidden" name="%s" value="%s"/>"""%(k,v)

    # 再生成排序条件
    if admin_class.sort_conditions:
        inp += """<input type="hidden" name="%s" value="%s"/>""" % ("o", list(admin_class.sort_conditions.values())[0])

    return mark_safe(inp)

build_search_filter模板函数，生成input标签（含有各个条件）

3.后端处理搜索条件，生成querysets数据

def get_search_result(request,querysets,admin_class):
    search_val = request.GET.get("_q")
    if search_val:
        q = Q()
        q.connector = "OR"
        for field in admin_class.search_fields:
            q.children.append(("%s__contains"%field,search_val))
        querysets = querysets.filter(q)
    return querysets,search_val

views处理搜索字段，注意使用OR，需要用到Q方法

推文：python---django中orm的使用（2）

Day4:动态生成任意表的CURD

1.如何在前端动态生成标签？使用form验证可以针对model生成所有的字段控件

推文：python---django中form组件（2）自定制属性以及表单的各种验证,以及数据源的实时更新,以及和数据库关联使用ModelForm和元类

from django.forms import ModelForm
from repository import models

class CustomerForm(ModelForm):
    class Meta:
        model = models.CustumerInfo #将表与元类中的数据关联
        fields = "__all__"

    def __new__(cls, *args, **kwargs):
        print(cls.base_fields)
        #OrderedDict([('name', <django.forms.fields.CharField object at 0x00000000047FE9E8>), ('contact_type', <django.forms.fields.TypedChoiceField object at 0x00000000047FEBA8>), ('contact', <django.forms.fields.CharField object at 0x00000000047FECC0>), ('source', <django.forms.fields.TypedChoiceField object at 0x00000000047FEE10>), ('referral_from', <django.forms.models.ModelChoiceField object at 0x00000000047FEEF0>), ('consult_courses', <django.forms.models.ModelMultipleChoiceField object at 0x000000000480B048>), ('consult_content', <django.forms.fields.CharField object at 0x000000000480B0B8>), ('status', <django.forms.fields.TypedChoiceField object at 0x000000000480B208>), ('consultant', <django.forms.models.ModelChoiceField object at 0x000000000480B2E8>)])
        #这张表中的所有字段对象
        for field_name,field_obj in dict(cls.base_fields).items():
            field_obj.widget.attrs.update({'class':"form-control"})

        return ModelForm.__new__(cls)

实验：使用固定的数据模型去生成对应的form验证类，可以用来在前端之间生成控件

2.如何针对每张表动态生成一个Form类？需要用到type方法去动态生成类

推文：python---基础知识回顾（三）（面向对象）

from django.forms import ModelForm
from repository import models

def create_dynamic_model_form(admin_class,form_add = False):
    '''动态生成modelform，form_add表示是添加数据生成form类。添加和编辑有所区别'''
    class Meta:
        model = admin_class.model # 将表与元类中的数据关联
        fields = "__all__"
        if not form_add:
            exclude = admin_class.readonly_fields
            admin_class.add_flag = False
        else:
            exclude = []
            admin_class.add_flag = True


    def __new__(cls, *args, **kwargs):
        #OrderedDict([('name', <django.forms.fields.CharField object at 0x00000000047FE9E8>), ('contact_type', <django.forms.fields.TypedChoiceField object at 0x00000000047FEBA8>), ('contact', <django.forms.fields.CharField object at 0x00000000047FECC0>), ('source', <django.forms.fields.TypedChoiceField object at 0x00000000047FEE10>), ('referral_from', <django.forms.models.ModelChoiceField object at 0x00000000047FEEF0>), ('consult_courses', <django.forms.models.ModelMultipleChoiceField object at 0x000000000480B048>), ('consult_content', <django.forms.fields.CharField object at 0x000000000480B0B8>), ('status', <django.forms.fields.TypedChoiceField object at 0x000000000480B208>), ('consultant', <django.forms.models.ModelChoiceField object at 0x000000000480B2E8>)])
        #这张表中的所有字段对象
        for field_name,field_obj in dict(cls.base_fields).items():
            field_obj.widget.attrs.update({'class':"form-control"})
            # if field_name in admin_class.readonly_fields:
            #     field_obj.widget.attrs.update({'disabled':'true'})
        return ModelForm.__new__(cls)

    dynamic_form = type("DynamicModelForm",(ModelForm,),{'Meta':Meta,"__new__":__new__})

    return dynamic_form

form_handle.py中去创建方法，动态创建类

3.在修改页面中动态创建Form类（需要传递原来数据）

@login_required
def table_obj_change(request,app_name,model_name,obj_id):
    '''kingadmin数据修改页面'''
    admin_class = site.enabled_admins[app_name][model_name]

    #动态生成form表单
    model_form = form_handle.create_dynamic_model_form(admin_class)
    obj = admin_class.model.objects.get(id=obj_id)

    if request.method == "GET":
        form_obj = model_form(instance=obj)
    elif request.method == "POST":
        form_obj = model_form(instance=obj,data=request.POST)
        if form_obj.is_valid():
            form_obj.save()
            return redirect("/kingadmin/%s/%s"%(app_name,model_name))

    return render(request,"kingadmin/table_obj_change.html",locals())

table_obj_change方法去创建form类，传递到前端

    url(r"^(w+)/(w+)/(d+)/change/$", views.table_obj_change, name="table_obj_change"),

url中对于修改的匹配

4.在添加页面动态创建Form类

@login_required
def table_obj_add(request,app_name,model_name):
    admin_class = site.enabled_admins[app_name][model_name]

    model_form = form_handle.create_dynamic_model_form(admin_class,form_add = True)

    if request.method == "GET":
        form_obj = model_form()
    elif request.method == "POST":
        form_obj = model_form(data=request.POST)
        if form_obj.is_valid:
            form_obj.save()
            return redirect("/kingadmin/%s/%s" % (app_name, model_name))

    return render(request,"kingadmin/table_obj_add.html",locals())

table_obj_add方法

    url(r"^(w+)/(w+)/add/$", views.table_obj_add, name="table_obj_add")

url.py中对于添加的匹配

添加的url

5.修改和添加的HTML和公共部分

{% extends "kingadmin/index.html" %}
{% load my_func %}


{% block right-content-container %}
<h2 class="page-header">{% get_model_name admin_class %}</h2>
<h3 class="page-header">添加{% get_model_name admin_class %}</h3>
    <div>
    add
        {% include "kingadmin/table_obj_change_component.html" %}
    </div>
{% endblock %}

table_obj_add.html

{% extends "kingadmin/index.html" %}
{% load my_func %}


{% block right-content-container %}
<h2 class="page-header">{% get_model_name admin_class %}</h2>
<h3 class="page-header">修改{{ form_obj.instance }}</h3>
    <div>
    change
            {% include "kingadmin/table_obj_change_component.html" %}
    </div>
{% endblock %}

table_obj_change.html

{% load my_func %}

<form class="form-horizontal" onsubmit="ChangeSelStatus(this);" method="post" role="form">
            {% csrf_token %}
            {% for field in form_obj %}
                  <div class="form-group">
                     <label class="col-sm-2 control-label">{{ field.label }}</label>
                    {% if field.name in admin_class.filter_horizontal %}
                        <div class="col-sm-5">
                            <select class="form-control" name="" id="id_{{ field.name }}_from" multiple>
                                {% get_rel_m2m_val field.name admin_class as rel_querysets %}
                                {% for rel_obj in rel_querysets %}
                                    {% get_rel_m2m_sel form_obj field.name rel_obj as sel_flag%}
                                    {% if not sel_flag %}
                                    <option ondblclick="MoveEleToOpp(this,'{{ field.name }}');" value="{{ rel_obj.id }}">{{ rel_obj }}</option>
                                    {% endif %}
                                {% endfor %}
                            </select>
                        </div>
                        <div class="col-sm-5">
                            <select tag="submit" class="form-control" name="{{ field.name }}" id="id_{{ field.name }}_to" multiple>
                                {% get_rel_m2m_val field.name admin_class as rel_querysets %}
                                {% for rel_obj in rel_querysets %}
                                    {% get_rel_m2m_sel form_obj field.name rel_obj as sel_flag%}
                                    {% if sel_flag %}
                                    <option ondblclick="MoveEleToOpp(this,'{{ field.name }}');" value="{{ rel_obj.id }}">{{ rel_obj }}</option>
                                    {% endif %}
                                {% endfor %}
                            </select>
                        </div>
                    {% else %}
                    <div class="col-sm-10">
                      {{ field }}
                        <span style="color: red;">
                            {{ field.errors.0 }}
                        </span>
                    </div>
                    {% endif %}
                  </div>
            {% endfor %}
            {% if not admin_class.add_flag %}
                {% for field_name in admin_class.readonly_fields %}
                     <div class="form-group">
                        <label class="col-sm-2 control-label">{{ field_name }}</label>
                        <div class="col-sm-10">
                                <p class="text-left">{% get_field_value_p field_name form_obj %}</p>
                        </div>
                     </div>
                {% endfor %}
            {% endif %}
            <div class="col-lg-offset-11 col-sm-1">
                <input type="submit" class="btn btn-success" value="Save">
            </div>
            </form>

{% block extra-js %}
    <script>
    function MoveEleToOpp(ths,field_name) {
        if($(ths).parent().prop("id") == "id_"+field_name+"_from"){
            var new_target = "id_"+field_name+"_to";
        }else{
            var new_target = "id_"+field_name+"_from";
        }
        $("#"+new_target).append(ths);
    }

    function ChangeSelStatus(ths){
        $("select[tag] option").prop("selected",true);
    }
    </script>
{% endblock %}

table_obj_change_component.html公共部分

6.处理在add和change中对于readonly_fileds字段的不同

            {% if not admin_class.add_flag %}
                {% for field_name in admin_class.readonly_fields %}
                     <div class="form-group">
                        <label class="col-sm-2 control-label">{{ field_name }}</label>
                        <div class="col-sm-10">
                                <p class="text-left">{% get_field_value_p field_name form_obj %}</p>
                        </div>
                     </div>
                {% endfor %}
            {% endif %}

在动态生成ModelForm修改，并且向admin_class.add_flag加入标识，前端进行判别，决定是否去显示只读字段

7.对于filter_horizontal字段我们在模板函数中进行获取所有的值，并且判断是否显示在哪一个select标签中

                        <div class="col-sm-5">
                            <select class="form-control" name="" id="id_{{ field.name }}_from" multiple>
                                {% get_rel_m2m_val field.name admin_class as rel_querysets %}
                                {% for rel_obj in rel_querysets %}
                                    {% get_rel_m2m_sel form_obj field.name rel_obj as sel_flag%}
                                    {% if not sel_flag %}
                                    <option ondblclick="MoveEleToOpp(this,'{{ field.name }}');" value="{{ rel_obj.id }}">{{ rel_obj }}</option>
                                    {% endif %}
                                {% endfor %}
                            </select>
                        </div>
                        <div class="col-sm-5">
                            <select tag="submit" class="form-control" name="{{ field.name }}" id="id_{{ field.name }}_to" multiple>
                                {% get_rel_m2m_val field.name admin_class as rel_querysets %}
                                {% for rel_obj in rel_querysets %}
                                    {% get_rel_m2m_sel form_obj field.name rel_obj as sel_flag%}
                                    {% if sel_flag %}
                                    <option ondblclick="MoveEleToOpp(this,'{{ field.name }}');" value="{{ rel_obj.id }}">{{ rel_obj }}</option>
                                    {% endif %}
                                {% endfor %}
                            </select>
                        </div>

前端对filter_horizontal进行判别，针对两个select都进行判别，一个放置选中一个放置未选中

@register.simple_tag
def get_rel_m2m_val(field_name,admin_class):
    field_obj = admin_class.model._meta.get_field(field_name)
    rel_model = field_obj.related_model
    querysets = rel_model.objects.all()
    return querysets

get_rel_m2m_val模板函数获取关联对象得所有值，用到字段对象的related_model属性获取关联对象

@register.simple_tag
def get_rel_m2m_sel(form_obj,field_name,rel_obj):
    try:
        querysets = getattr(form_obj.instance, field_name).all()
        if rel_obj in querysets:
            return True
        return False
    except TypeError:
        return False

get_rel_m2m_sel方法判断是否数据被选中，返回True选中，放在第二个select标签，放在未选中，放在第一个select标签

8.实现js双击option,在两个select之间跳转

<option ondblclick="MoveEleToOpp(this,'{{ field.name }}');" value="{{ rel_obj.id }}">{{ rel_obj }}</option>

为两个select标签绑定同一个MoveEleToOpp方法

    function MoveEleToOpp(ths,field_name) {
        if($(ths).parent().prop("id") == "id_"+field_name+"_from"){
            var new_target = "id_"+field_name+"_to";
        }else{
            var new_target = "id_"+field_name+"_from";
        }
        $("#"+new_target).append(ths);
    }

MoveEleToOpp方法实现：通过判断父标签select的id,将当前option转移append到对方的select中

9.实现在点击保存时，form表单自动将右侧select中的数据全部选中。注意：加上name为select标签，name="字段名"

<form class="form-horizontal" onsubmit="ChangeSelStatus(this);" method="post" role="form">

为form表单绑定方法ChangeSelStatus

    function ChangeSelStatus(ths){
        $("select[tag] option").prop("selected",true);
    }

ChangeSelStatus实现

10.为filter_horizontal完善功能，添加全选，全部移除

                            <p><a onclick="ChooseAll(this,'{{ field.name }}')">ChooseAll</a></p>
                            <p><a onclick="ChooseAll(this,'{{ field.name }}')">RemoveAll</a></p>

前端HTML

    function ChooseAll(ths,field_name) {
        var sel_id = $(ths).parent().prev().prop("id")
        if(sel_id == "id_"+field_name+"_from"){
            var new_target = "id_"+field_name+"_to";
        }else{
            var new_target = "id_"+field_name+"_from";
        }

        $("#"+sel_id).find("option").each(function(){
            $("#"+new_target).append(this);
        })
    }

ChooseAll函数js代码

Day5:删除功能开发和action方法实现

1.删除功能开发

{% extends "kingadmin/index.html" %}
{% load my_func %}


{% block right-content-container %}
<h2 class="page-header">{% get_model_name admin_class %}</h2>
<h3 class="page-header alert-danger">注意：以下与{{ obj }}想关联的数据都将被删除</h3>
    <div>
    {% get_del_obj obj app_name model_name as res_del %}
    {{ res_del|safe }}
    </div>

    <form method="post">
    {% csrf_token %}
        <input type="submit" class="btn btn-danger" value="确认删除">
        <a href="/kingadmin/{{ app_name }}/{{ model_name }}/{{ obj.id }}/change" class="btn btn-primary">返回</a>
    </form>
{% endblock %}

前端HTML代码

@register.simple_tag
def get_del_obj(model_obj, app_name, model_name):
    all_rel = model_obj._meta.related_objects
    ul = "<ul>"
    ul += "<li>%s:<a href='/kingadmin/%s/%s/%s/change'>%s</a></li>"%(model_obj._meta.label.rsplit('.',maxsplit=1)[1],app_name,model_name,model_obj.id,model_obj)
    for rel_field in all_rel:
        sub_querysets = getattr(model_obj,rel_field.name+"_set").all()
        if not sub_querysets:   #若是关联但是没有数据，则不显示
            continue
        if rel_field.get_internal_type() == "ManyToManyField":
            ul += "<li><ul>"
            ul += "<li>%s</li>"%rel_field.name
            for i in sub_querysets:
                ul += "<li><ul><li>%s</li></ul></li>" % i
            ul += "</ul></li>"
        else:
            for sub_item in sub_querysets:
                sub_res = get_del_obj(sub_item,sub_item._meta.app_label,sub_item._meta.model_name)
                ul += "<li>%s</li>"%(sub_res)

    ul += "</ul>"

    return ul

模板函数，去递归生成标签

@login_required
def table_obj_delete(request,app_name,model_name,obj_id):
    admin_class = site.enabled_admins[app_name][model_name]
    obj = admin_class.model.objects.get(id=obj_id)

    if request.method == "POST":
        obj.delete()
        return redirect("/kingadmin/{app_name}/{model_name}".format(app_name=app_name,model_name=model_name))

    return render(request, "kingadmin/table_obj_delete.html", locals())

views后台删除代码

2.action字段功能完善

class CustomerAdmin(BaseKingAdmin):
    list_display = ['id','name','contact_type','contact','source','consult_content','consultant','status','date']
    list_filter = ['source','consultant','status','date']
    search_fields = ['contact','consultant__name','name']
    readonly_fields = ['status','contact']
    filter_horizontal = ['consult_courses',]
    action = ['change_status',]
    def change_status(self,request,querysets):
        querysets.update(status=1)

kingadmin.py中放置action字段，包含有自定义方法

from django.shortcuts import render

class BaseKingAdmin(object):
    list_display = []
    list_filter = []
    search_fields = []
    readonly_fields = []
    filter_horizontal = []
    action = []
    def_action = ['delete_selected_objs']

    def delete_selected_objs(self,request,querysets):

        return render(request,'kingadmin/table_obj_delete.html')

    def __init__(self):
        self.action.extend(self.def_action)

admin_base.py中需要去设置action默认数据

（1）设置form表单布局

    <div>
        <form action="" method="post" class="form-inline" onsubmit="return Raw_input_action(this);">
        <div class="col-lg-3">
        {% csrf_token %}
        <label class="control-label">Action:</label>
            <select name="action" id="action" class="form-control">
            <option value="">---------</option>
            {% for action in admin_class.action %}
                <option value="{{ forloop.counter0 }}">{{ action }}</option>
            {% endfor %}
        </select>
        </div>
        <div class="col-sm-2">
            <input type="submit" value="Go" class="btn btn-primary">
        </div>
        </form>
    </div>

form表单

（2）设置复选框完成全选功能

    <div>
        <table class="table table-striped">
            <thead>
                <tr>
                    <th><input type="checkbox" id="check_All" onclick="CheckAll(this)"/></th>
                    {% build_title_row admin_class %}
                </tr>
            </thead>
            <tbody>
                {% for item in queryset %}
                    <tr>
                    <td><input type="checkbox" name="check_row" value="{{ item.id }}"></td>
                    {% build_table_row item admin_class %}
                    </tr>
                {% endfor %}
            </tbody>
        </table>
    </div>

HTML代码

    function CheckAll(ths) {
        if($(ths).prop("checked")){
            $("input[name=check_row]").prop("checked",true)
        }else{
            $("input[name=check_row]").prop("checked",false)
        }
    }

CheckAll方法js完成全选

（3）提交表单前先生成隐藏表单去获取数据集

    function Raw_input_action(ths) {
        if($("#action").val() == ""){
            alert("请选择正确的action");
            return false;
        }
        var select_ids = [];
        $("input[name=check_row]").filter(":checked").each(function(){
            select_ids.push($(this).val());
        })
        if(select_ids.length == 0){
            alert("请选择正确的项目");
            return false;
        }
        new_ele = "<input type='hidden' name='select_ids' value='"+JSON.stringify(select_ids)+"'/>";
        $(ths).append(new_ele);
        return true;
    }

Raw_input_action方法生成一个人input标签

（4）传递到后端进行处理

@login_required
def table_obj_list(request,app_name,model_name):
    '''取出指定的数据返给前端'''

    admin_class = site.enabled_admins[app_name][model_name]

    model_class = admin_class.model
    querysets = model_class.objects.all()   #所有数据

    if request.method == "POST":
        selected_action = request.POST.get("action")
        selected_ids = request.POST.get("select_ids")
        getattr(admin_class,admin_class.action[int(selected_action)])(request,querysets.filter(id__in=json.loads(selected_ids)))

在table_obj_list方法添加上post方法即可

3.处理action中的默认行为delete批量删除

（1）提交的url不是上面的table_obj_delete，而是本页面和change_status一起作为action传递入当前url

    def delete_selected_objs(self,request,querysets):
        return render(request,'kingadmin/table_obj_delete.html',{"admin_class":self,'obj':querysets})

delete_selected_objs的action方法

（2）获取delete_selected_objs在table_obj_list方法中返回

    if request.method == "POST":
        if request.POST.get("delete_ids"):
            '''如果是删除做post传递过来的话另外处理，否则就是action操作'''
            del_id = json.loads(request.POST.get("delete_ids"))
            admin_class.model.objects.filter(id__in=del_id).delete()
            return redirect("/kingadmin/%s/%s"%(app_name,model_name))
        else:
            selected_action = request.POST.get("action")
            selected_ids = request.POST.get("select_ids")
            res = getattr(admin_class,admin_class.action[int(selected_action)])(request,querysets.filter(id__in=json.loads(selected_ids)))
            #如果返回值，代表是返回render指向delete页面
            if res:
                return res

table_obj_list中对于post的处理

若是执行完action方法后没有返回值则是正常执行，如果有返回值，则是代表我们接下来是执行删除操作。需要返回

（3）我们还是调用的上面的table_obj_delete.html页面，但是其中的模板标签函数，是针对一个数据对象，而现在是一个数据集，我们需要再次处理

@register.simple_tag
def get_del_obj(model_objs, app_name, model_name):
    ul = "<ul>"

    try:
        iter(model_objs)
    except TypeError:
        model_objs = [model_objs,]

    for model_obj in model_objs:
        all_rel = model_obj._meta.related_objects
        ul += "<li>%s:<a href='/kingadmin/%s/%s/%s/change'>%s</a></li>"%(model_obj._meta.label.rsplit('.',maxsplit=1)[1],app_name,model_name,model_obj.id,model_obj)
        for rel_field in all_rel:
            sub_querysets = getattr(model_obj,rel_field.name+"_set").all()
            if not sub_querysets:   #若是关联但是没有数据，则不显示
                continue
            if rel_field.get_internal_type() == "ManyToManyField":
                ul += "<li><ul>"
                ul += "<li>%s</li>"%rel_field.name
                for i in sub_querysets:
                    ul += "<li><ul><li>%s</li></ul></li>" % i
                ul += "</ul></li>"
            else:
                for sub_item in sub_querysets:
                    sub_res = get_del_obj(sub_item,sub_item._meta.app_label,sub_item._meta.model_name)
                    ul += "<li>%s</li>"%(sub_res)

    ul += "</ul>"

    return ul

简单改变模板函数get_del_obj，将原来单个对象也改写为可迭代

（4）我们提交数据，也不再是table_obj_delete方法，而是table_obj_list方法，所以我们需要传递一个数据代表要删除的数据id集合，同时一个一个标识

<input type="hidden" name="delete_ids" value="{% get_del_objs_id obj %}">

在显示的table_obj_delete.html页面加入隐藏标签，收集所有id集合

@register.simple_tag
def get_del_objs_id(objs):
    obj_ser = []
    for obj in objs:
        obj_ser.append(obj.id)
    return json.dumps(obj_ser)

get_del_objs_id模板函数收集所有的数据对象的id,json序列化返回给前端

（5）views页面根据post传递过来的隐藏标签的name，判断是不是执行删除数据操作

    if request.method == "POST":
        if request.POST.get("delete_ids"):
            '''如果是删除做post传递过来的话另外处理，否则就是action操作'''
            del_id = json.loads(request.POST.get("delete_ids"))
            admin_class.model.objects.filter(id__in=del_id).delete()
            return redirect("/kingadmin/%s/%s"%(app_name,model_name))

获取前端input表单名delete_ids，判断是否有数据，来决定是否删除

4.实现面包屑导航

    <ol class="breadcrumb">
        <li><a href="/kingadmin">CRM</a></li>
        <li><a href="/kingadmin/{{ app_name }}">{{ app_name }}</a></li>
        <li><a href="/kingadmin/{{ app_name }}/{{ model_name }}">{{ model_name }}</a></li>
        <li class="active">{% get_nva_active admin_class %}</li>
    </ol>

add页面导航

    <ol class="breadcrumb">
        <li><a href="/kingadmin">CRM</a></li>
        <li><a href="/kingadmin/{{ app_name }}">{{ app_name }}</a></li>
        <li><a href="/kingadmin/{{ app_name }}/{{ model_name }}">{{ model_name }}</a></li>
        <li class="active">{% get_nva_active admin_class %}</li>
    </ol>

list页面导航

    <ol class="breadcrumb">
        <li><a href="/kingadmin">CRM</a></li>
        <li><a href="/kingadmin/{{ app_name }}">{{ app_name }}</a></li>
        <li><a href="/kingadmin/{{ app_name }}/{{ model_name }}">{{ model_name }}</a></li>
        <li class="active">{{ form_obj.instance }}</li>
    </ol>

change页面导航

@register.simple_tag
def get_nva_active(admin_class):
    return admin_class.model._meta.verbose_name

get_nva_active模板函数获取对象的中文名

    <ol class="breadcrumb">
        <li><a href="/kingadmin">CRM</a></li>
        <li><a href="/kingadmin/{{ app_name }}">{{ app_name }}</a></li>
        <li><a href="/kingadmin/{{ app_name }}/{{ model_name }}">{{ model_name }}</a></li>
        <li class="active">{% get_nav_del obj %}</li>
    </ol>

delete页面导航

@register.simple_tag
def get_nav_del(model_objs):
    obj_names = []
    try:
        iter(model_objs)
    except TypeError:
        model_objs = [model_objs,]
    for model in model_objs:
        obj_names.append("%s"%model)
    return '|'.join(obj_names)

get_nav_del模板函数组合对象名

5.左侧菜单状态

               {% for menu in role.menus.select_related %}
                   {% if menu.url_type == 0 %}
                       {% if menu.url_name == request.path %}
                           <li class="active"><a href="{{ menu.url_name }}">{{ menu.name }}</a></li>
                       {% else %}
                           <li><a href="{{ menu.url_name }}">{{ menu.name }}</a></li>
                       {% endif %}
                   {% else %}
                       {% url menu.url_name as url_name %}
                       {% if url_name == request.path %}
                           <li class="active"><a href="{{ url_name }}">{{ menu.name }}</a></li>
                       {% else %}
                           <li><a href="{{ url_name }}">{{ menu.name }}</a></li>
                       {% endif %}
                   {% endif %}
               {% endfor %}

index页面在生成url时，对其进行判断。要分辨动态和绝对

Day6:学员报名流程开发

class ContractTemplate(models.Model):
    '''合同模板表'''
    name = models.CharField(max_length=64)
    content = models.TextField()
    date = models.DateField(auto_now_add=True)

    def __str__(self):
        return self.name

class StudentEnrollment(models.Model):
    '''学员报名表：这里还没有变成学员，适合客户表相关联'''
    customer = models.ForeignKey("CustumerInfo")
    class_grade = models.ForeignKey("ClassList")
    consultant = models.ForeignKey("UserProfile")   #对应的销售
    contract_agreed = models.BooleanField(default=False)    #是否同意合同
    contract_signed_date = models.DateTimeField(blank=True,null=True)   #同意合同未到时间
    contract_approved = models.BooleanField(default=False)  #审核是否完毕
    contract_approved_date = models.DateTimeField(blank=True,null=True)

    class Meta:
        unique_together = ("customer","class_grade")

    def __str__(self):
        return "%s"%self.customer


class PaymentRecord(models.Model):
    '''存储学员缴费记录'''
    enrollment = models.ForeignKey("StudentEnrollment")
    payment_type_choice = (
        (0,"报名费"),
        (1,"学费"),
        (2,"退费"),
    )
    payment_type = models.SmallIntegerField(choices=payment_type_choice)
    amount = models.IntegerField("费用",default=500)
    consultant = models.ForeignKey("UserProfile")   #费用缴给谁
    date = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return "%s"%self.enrollment

新增3张表：学员注册表，合同表（和班级关联），缴费记录表

一：销售为想报名的学员提供链接

@login_required
def Student_encroll(request):
    ClassList = models.ClassList.objects.all()
    StuEncroll = models.CustumerInfo.objects.filter(consultant__user=request.user).all()

    if request.method == "POST":
        student = request.POST.get("student")
        classlist = request.POST.get("classlist")

        try:
            StuEncObj = models.StudentEnrollment.objects.create(
                customer_id=student,
                class_grade_id=classlist,
                consultant=request.user.userprofile
            )
        except IntegrityError:
            StuEncObj = models.StudentEnrollment.objects.get(
                customer_id=student,
                class_grade_id=classlist,
                consultant=request.user.userprofile
            )
            if StuEncObj.contract_agreed:
                return redirect("encrollment/%s/contract_audit.html"%StuEncObj.id)
            else:
                return HttpResponse("等待学员身份验证")

        link = "http://127.0.0.1:8000/sale/encrollment/%s.html"%StuEncObj.id
    return render(request,"sale/stu_encroll.html",locals())

Student_encroll学员注册链接获取

二：学员获取链接，进行填写信息，查阅合同，同意并上传证件信息

def enrollment(request,id):
    '''学员在线报名'''
    enrollment_obj = models.StudentEnrollment.objects.get(id=id)

    if enrollment_obj.contract_agreed and not enrollment_obj.contract_approved:
        return HttpResponse("信息正在审核当中")

    if enrollment_obj.contract_approved:
        return HttpResponse("审核通过，去进行缴费操作")

    if request.method == "GET":
        forms = CustomerForm(instance=enrollment_obj.customer)
    elif request.method == "POST":
        if not request.POST.get("contract_agreed"):
            return HttpResponse("信息提交失败，请先阅读合同")
        cus_dir = os.path.join(conf.settings.SALE_FILE_UPLOAD_DIR, id)
        if len(os.listdir(cus_dir)) == 0:
            return HttpResponse("信息提交失败，请先上传证件信息")

        forms = CustomerForm(instance=enrollment_obj.customer,data=request.POST)
        if forms.is_valid():
            forms.save()
            enrollment_obj.contract_agreed = True
            enrollment_obj.contract_signed_date = datetime.datetime.now()
            enrollment_obj.save()
            return HttpResponse("信息提交成功")
    file_dir = os.path.join(conf.settings.SALE_FILE_UPLOAD_DIR,id)
    if os.path.isdir(file_dir):
        file_info = os.listdir(file_dir)

    return render(request,"sale/enrollment.html",locals())

enrollment学员在线报名

{% extends "index.html" %}

{% block extra-link %}
<link rel="stylesheet" href="/static/plugins/dropzone/dropzone.css">
{% endblock %}

{% block body %}
<h1 class="page-header">学员报名</h1>

<div class="col-lg-offset-1 col-lg-10">
<div class="panel panel-info">
    <div class="panel-heading">
        <h3 class="panel-title">学员在线报名</h3>
    </div>
    <div class="panel-body">
        <form class="form-horizontal" onsubmit="return PrevSubmit(this);" method="post" role="form">
            {% csrf_token %}
            {% for field in forms %}
              <div class="form-group col-sm-6">
                <label class="col-sm-4 control-label">{{ field.label }}</label>
                <div class="col-sm-8">
                  {{ field }}
                    <span style="color: red;">{{ field.errors.0 }}</span>
                </div>
              </div>
            {% endfor %}
              <div class="form-group col-sm-6">
                <label class="col-sm-4 control-label">报名班级</label>
                <div class="col-sm-8">
                  <p class="form-control-static">{{ enrollment_obj.class_grade }}</p>
                </div>
              </div>
              <div class="form-group col-sm-6">
                <label class="col-sm-4 control-label">学费</label>
                <div class="col-sm-8">
                  <p class="form-control-static">{{ enrollment_obj.class_grade.couser.price }}</p>
                </div>
              </div>
              <div class="col-sm-12">
                  <pre style="height: 400px">
                    {{ enrollment_obj.class_grade.contract_template.content }}
                  </pre>
                  <div>
                  <div class="form-inline">
                      <label class="col-sm-6 control-label" style="padding-top: 0px">是否同意以上合同</label>
                      <input type="checkbox" value="1" name="contract_agreed">
                  </div>
                </div>
              </div>
              <div class="form-group col-sm-6">
                <div class="col-sm-8">
                    <input type="submit" class="btn btn-success" value="提交">
                </div>
              </div>
        </form>
      <div class="col-sm-12">
          <ul id="file_ul" style="list-style: none">
          <label class="control-label" style="padding-top: 0px;">已上传的文件目录</label>
              {% for file in file_info %}
                <li>{{ file }}</li>
              {% endfor %}
          </ul>
        <form action="{% url 'enrollment_fileupload' enrollment_obj.id %}" id="myAwesomeDropzone" class="dropzone">
          <div class="fallback">
            <input name="file" type="file" multiple />
          </div>
        </form>
      </div>
    </div>

</div>
</div>



{% endblock %}

{% block extra-js %}
<script src="/static/plugins/dropzone/dropzone.js"></script>
<script>
$(function () {
    Dropzone.options.myAwesomeDropzone = {
      paramName: "file", // The name that will be used to transfer the file
      maxFilesize: 2, // MB
      maxFiles:2,
      parallelChunkUploads:true,
      accept: function(file, done) {
        if (file.name == "justinbieber.jpg") {
          done("Naha, you don't.");
        }
        else { done(); }
      },
      init: function() {
        this.on("success", function(file,respone) {
            /* Maybe display some more file information on your page */
            var rep = JSON.parse(respone)
            if(!rep.status){
                alert(rep.message);
                return;
            }else{
                var li = "<li>"+file.name+"</li>";
                $("#file_ul").append(li);
            }
        });
      }
    };
});

function PrevSubmit(ths){
    if(!$($(ths).find(":checkbox[name=contract_agreed]")[0]).prop("checked")){
        alert("请先阅读合同");
        return false;
    }

    if($("#file_ul").find("li").length==0){
        alert("请先上传证件信息");
        return false;
    }

    $(ths).find(":disabled").removeAttr("disabled")
    return true
}
</script>

{% endblock %}

erollment.html报名页面，含有Dropzone使用

@csrf_exempt
def enrollment_fileupload(request,encrollment_obj_id):
    cus_dir = os.path.join(conf.settings.SALE_FILE_UPLOAD_DIR,encrollment_obj_id)
    if not os.path.isdir(cus_dir):
        os.makedirs(cus_dir)

    status = {
        'status':True,
        "message":None
    }
    print(request.FILES)    #需要去接收文件，前端状态才会是true
    if len(os.listdir(cus_dir)) >= 2:
        status['status'] = False
        status['message'] = "文件超出上传个数"
        return HttpResponse(json.dumps(status))

    file_obj = request.FILES.get("file")

    with open(os.path.join(cus_dir,file_obj.name),"wb") as fp:
        for chunks in file_obj.chunks():
            fp.write(chunks)

    return HttpResponse(json.dumps(status))

enrollment_fileupload处理Dropzone文件传输

三：销售审核学员注册信息,审核通过，为其生成账号（密码需要使用Django模块加密），发送邮件

from django.contrib.auth.hashers import make_password　　#用于生成密码

@login_required
def contract_audit(request,id):
    '''合同审查'''
    enrollment_obj = models.StudentEnrollment.objects.get(id=id)

    if not enrollment_obj.contract_agreed:
        return redirect("/sale/EncrollLink.html")

    if enrollment_obj.contract_approved:
        return HttpResponse("审核通过，等待缴费")

    if request.method == "GET":
        forms = CustomerForm(instance=enrollment_obj.customer)
        contract_forms = ContractForm(instance=enrollment_obj)
    elif request.method == "POST":
        forms = CustomerForm(instance=enrollment_obj.customer,data=request.POST)
        contract_forms = ContractForm(instance=enrollment_obj,data=request.POST)
        if forms.is_valid() and contract_forms.is_valid():
            forms.save()
            contract_forms.save()
            enrollment_obj.contract_approved_date = datetime.datetime.now()
            enrollment_obj.save()

            try:
                stu_obj = enrollment_obj.customer.student
            except Exception:
                pass
            else:
                return HttpResponse(
                    "用户%s已添加--->账号为：%s" % (enrollment_obj.customer.name, enrollment_obj.customer.student.account.name))

            #生成一个随机字符串
            account = ''.join(random.sample(string.digits,8))
            pwd = ''.join(random.sample(string.ascii_letters+string.digits,8))

            #创建一个账号
            user = models.User.objects.create(
                username=account,
                password=make_password(pwd),
            )

            #创建一个用户
            userprofile = models.UserProfile.objects.create(
                user=user,
                name=enrollment_obj.customer.name,
            )

            #为用户绑定一个角色
            userprofile.role.add(models.Role.objects.get(name="Student"))

            #保存到学员表
            models.Student.objects.create(
                customer=enrollment_obj.customer,
                class_grades=enrollment_obj.class_grade,
                account=userprofile,
            )

            send_info = "账号：%s
密码:%s"%(account,pwd)

            send_mail(
                '成功成为正式学员',
                send_info,
                '18904190363@sina.cn',
                ["%s@qq.com"%enrollment_obj.customer.contact,],
                fail_silently=False,
            )

            return HttpResponse("审核通过，等待缴费")
        print(forms.errors,contract_forms.errors)

    return render(request,"sale/contract_audit.html",locals())

contract_audit合同审核后生成账号，发送信息

Django自带邮件发送模块

（1）settings中配置

（2）导入模块发送邮件

day7:实现讲师和学员作业发布上传功能（其中由于多使用table浏览数据，可以自定义一个类似于form的基类，去统一实现table显示）

一：讲师功能

（1）可以看出上面多是table显示信息，下面自定义table_form类似于forms

import re

class BaseForm(object):
    display_list = []
    field_tag = {}
    attrs = {}
    extra_field = []

    def __init__(self,model,querysets):
        self.instance = model
        self.querysets = querysets
        self.th = []
        self.tr = []


    def register(self):
        for field in self.display_list:
            if field == "self":
                self.th.append(self.instance._meta.verbose_name)
                continue
            field_obj = self.instance._meta.get_field(field)
            self.th.append(field_obj.verbose_name)

        #自定义额外字段
        for item in self.extra_field:
            for k,v in item.items():
                if v.get("verbose_name"):
                    self.th.append(v.get("verbose_name"))
                else:
                    self.th.append(k)

        for query in self.querysets:
            tds = []
            for th in self.display_list:
                if th == "self":
                    field_val = "%s" % query
                elif len(self.instance._meta.get_field(th).choices) > 0:
                    field_val = "%s"%getattr(query,"get_%s_display"%th)()
                else:
                    field_val = "%s"%getattr(query,th)
                if self.field_tag.get(th):
                    # {"self": {"a": {"href": "127.0.0.1:8000","href": "127.0.0.1:8000"},"a": {"href": "127.0.0.1:8000"}}}
                    tags = self.field_tag.get(th)
                    # {"a": {"href": "127.0.0.1:8000", "href": "127.0.0.1:8000"}, "a": {"href": "127.0.0.1:8000"}}    #前面是内层，后面是外层
                    for k,v in tags.items():
                        # "a": {"href": "127.0.0.1:8000", "href": "127.0.0.1:8000"}
                        new_attr = []
                        for k1,v1 in v.items(): #{"href": "127.0.0.1:8000", "href": "127.0.0.1:8000"}
                            pat = re.compile("{(.*?)}")
                            res = pat.search(v1)
                            while res:
                                v1 = pat.sub(str(getattr(query,res.group(1))),v1,1)
                                res = pat.search(v1)

                            new_attr.append("%s='%s'"%(k1,v1))  #获取到所有的属性放在列表中
                        field_val = "<%s %s>%s</%s>"%(k," ".join(new_attr),field_val,k)
                tds.append(field_val)

            for item in self.extra_field:
                for e_k,e_v in item.items():
                    if e_v.get("value"):
                        field_val = "%s" % e_v.get("value")
                    else:
                        if hasattr(e_v.get("function"),"__call__"):
                            field_val = e_v.get("function")(getattr(query,e_v.get("model_attr")),*e_v.get("args",()),**e_v.get("kwargs",{}))
                        else:
                            field_val = getattr(getattr(query,e_v.get("model_attr")),e_v.get("function"))(*e_v.get("args",()),**e_v.get("kwargs",{}))
                    if self.field_tag.get(e_k):
                        # {"self": {"a": {"href": "127.0.0.1:8000","href": "127.0.0.1:8000"},"a": {"href": "127.0.0.1:8000"}}}
                        tags = self.field_tag.get(e_k)
                        # {"a": {"href": "127.0.0.1:8000", "href": "127.0.0.1:8000"}, "a": {"href": "127.0.0.1:8000"}}    #前面是内层，后面是外层
                        for k,v in tags.items():
                            # "a": {"href": "127.0.0.1:8000", "href": "127.0.0.1:8000"}
                            new_attr = []
                            for k1,v1 in v.items(): #{"href": "127.0.0.1:8000", "href": "127.0.0.1:8000"}
                                pat = re.compile("{(.*?)}")
                                res = pat.search(v1)
                                while res:
                                    v1 = pat.sub(str(getattr(query, res.group(1))), v1, 1)
                                    res = pat.search(v1)
                                new_attr.append("%s='%s'"%(k1,v1))  #获取到所有的属性放在列表中
                            field_val = "<%s %s>%s</%s>"%(k," ".join(new_attr),field_val,k)
                    tds.append(field_val)

            self.tr.append(tds)

    def __str__(self):
        cls_attr = []
        if len(self.attrs):
            for item in self.attrs.items():
                cls_attr.append("%s='%s'"%(item[0],item[1]))

        tb = "<table %s>"%(" ".join(cls_attr))

        tr = "<thead><tr>"
        for th_data in self.th:
            th = "<th>%s</th>"%th_data
            tr += th
        tr += "</tr></thead><tbody>"

        tb += tr

        for tr_data in self.tr:
            tr = "<tr>"
            for td_data in tr_data:
                td = "<td>%s</td>"%td_data
                tr += td
            tr += "</tr>"
            tb += tr
        tb += "</tbody></table>"
        return tb

BaseForm实现通过表数据显示table

（2）使用方法

from Teacher.table_form import BaseForm

class ClassListForm(BaseForm):
    display_list = ["self","branch","class_type","start_date","graduate_date"]   #self代表直接显示本条数据__str__
    field_tag = {"self":{"a":{"href":"127.0.0.1:8000"},},"study_record":{"a":{"href":"/teacher/classlist/{id}/class_list.html"}},"student":{"a":{"href":"/teacher/classlist/{id}/student_list.html"}}}   #在前面的标签会显示在内层,在显示的数据外面加上标签
    attrs = {"class":"table table-hover"}　　#为table设置属性
    extra_field = [{"student":{'verbose_name':"学员数量","model_attr":"student_set","function":"count"}},{"study_record":{"verbose_name":"上课记录","value":"上课记录"}}]　　
    #额外自定义字段，若是有值value，会直接输出，否则会去当前实例集self.querysets的每一个实例中去获取相关的数据，使用函数去执行。字符串是调用自己的内置方法，function是调用自定义方法，同时可以使用"args"传递元组，"kwargs":传递字典作为参数

    def __init__(self,model,querysets):
        super(ClassListForm, self).__init__(model,querysets)

class StudentForm(BaseForm):
    display_list = ["self"]   #,"couser","semester"
    field_tag = {"self":{"a":{"href":"127.0.0.1:8000"},},}   #在前面的标签会显示在内层
    attrs = {"class":"table table-hover"}
    extra_field = [{"student_grade":{'verbose_name':"学员成绩","value":"N/A"}},{"study_status":{"verbose_name":"出勤状况","value":"N/A"}}]
    #额外自定义字段，若是有值value，会直接输出，否则会去当前实例集self.querysets的每一个实例中去获取相关的数据，使用函数去执行。字符串是调用自己的内置方法，function是调用自定义方法

    def __init__(self,model,querysets):
        super(StudentForm, self).__init__(model,querysets)

StudentForm

class CourseForm(BaseForm):
    display_list = ["self","title","content","has_homework","homework","date"]   #,"couser","semester"
    field_tag = {"self":{"a":{"href":"127.0.0.1:8000"},},}   #在前面的标签会显示在内层
    attrs = {"class":"table table-hover"}
    extra_field = []
    #额外自定义字段，若是有值value，会直接输出，否则会去当前实例集self.querysets的每一个实例中去获取相关的数据，使用函数去执行。字符串是调用自己的内置方法，function是调用自定义方法

    def __init__(self,model,querysets):
        super(CourseForm, self).__init__(model,querysets)

CourseForm

（3）在views中调用各个tableform

@login_required
def course_list(request):
    course_querysets = models.ClassList.objects.filter(
        teachers=request.user.userprofile
    )

    #自定义form，用于table
    forms = ClassListForm(models.ClassList,course_querysets)
    forms.register()

    return render(request,"teacher/class_list.html",locals())


@login_required
def student_list(request,c_id):
    student_querysets = models.ClassList.objects.filter(
        teachers = request.user.userprofile,
        id = c_id
    ).get().student_set.all()

    forms = StudentForm(models.Student,student_querysets)
    forms.register()

    return render(request,"teacher/student_list.html",locals())

@login_required
def classRec_list(request,c_id):
    course_querysets = models.ClassList.objects.filter(
        teachers = request.user.userprofile,
        id = c_id
    ).get().courserecord_set.all()

    forms = CourseForm(models.CourseRecord,course_querysets)
    forms.register()

    return render(request, "teacher/course_list.html", locals())

所有显示table的函数

（4）前端调用{{ forms|safe }}，form是定义的tableform变量,实现简单显示页面

{% extends "index.html" %}
{% load my_func %}

{% block right-content-container %}

<div class="panel panel-primary">
    <div class="panel-heading">
        <h3 class="panel-title">课程列表</h3>
    </div>
    <div class="panel-body">
        {{ forms|safe }}
    </div>
</div>
{% endblock %}

class_list.html

{% extends "index.html" %}
{% load my_func %}

{% block right-content-container %}

<div class="panel panel-primary">
    <div class="panel-heading">
        <h3 class="panel-title">课程记录</h3>
    </div>
    <div class="panel-body">
        {{ forms|safe }}
        <a href="{% url 'classRec_add' c_id %}" class="btn btn-primary">添加记录</a>
    </div>
</div>
{% endblock %}

course_list.html

{% extends "index.html" %}
{% load my_func %}

{% block right-content-container %}

<div class="panel panel-primary">
    <div class="panel-heading">
        <h3 class="panel-title">学员列表</h3>
    </div>
    <div class="panel-body">
        {{ forms|safe }}
    </div>
</div>
{% endblock %}

student_list.html

（5）添加记录

from django.forms import ModelForm,forms
from repository import models

class CustomerForm(ModelForm):
    class Meta:
        model = models.CustumerInfo #将表与元类中的数据关联
        fields = "__all__"
        exclude = ["consult_content","status","consult_courses"]
        readonly_fields = ['contact_type',"contact","consultant",'referral_from','source']

    def __new__(cls, *args, **kwargs):
        #OrderedDict([('name', <django.forms.fields.CharField object at 0x00000000047FE9E8>), ('contact_type', <django.forms.fields.TypedChoiceField object at 0x00000000047FEBA8>), ('contact', <django.forms.fields.CharField object at 0x00000000047FECC0>), ('source', <django.forms.fields.TypedChoiceField object at 0x00000000047FEE10>), ('referral_from', <django.forms.models.ModelChoiceField object at 0x00000000047FEEF0>), ('consult_courses', <django.forms.models.ModelMultipleChoiceField object at 0x000000000480B048>), ('consult_content', <django.forms.fields.CharField object at 0x000000000480B0B8>), ('status', <django.forms.fields.TypedChoiceField object at 0x000000000480B208>), ('consultant', <django.forms.models.ModelChoiceField object at 0x000000000480B2E8>)])
        #这张表中的所有字段对象
        for field_name,field_obj in dict(cls.base_fields).items():
            field_obj.widget.attrs.update({'class':"form-control"})

            if field_name in cls.Meta.readonly_fields:
                field_obj.widget.attrs.update({'disabled': "true"})

        return ModelForm.__new__(cls)

    def clean(self):
        if self.errors:
            raise forms.ValidationError("Please fix errors before re-submit")

        if self.instance.id is not None:    #这是一个修改的表单，而不是添加
            for field_name in self.Meta.readonly_fields:
                new_val = self.cleaned_data[field_name]
                old_val = getattr(self.instance, field_name)
                if new_val != old_val:
                    self.add_error(field_name, "ReadOnly fileds error: you cannot change %s"%old_val)

class CourseRecordForm(ModelForm):
    class Meta:
        model = models.CourseRecord #将表与元类中的数据关联
        fields = "__all__"
        # exclude = ["teacher"]

    def __new__(cls, *args, **kwargs):
        #OrderedDict([('name', <django.forms.fields.CharField object at 0x00000000047FE9E8>), ('contact_type', <django.forms.fields.TypedChoiceField object at 0x00000000047FEBA8>), ('contact', <django.forms.fields.CharField object at 0x00000000047FECC0>), ('source', <django.forms.fields.TypedChoiceField object at 0x00000000047FEE10>), ('referral_from', <django.forms.models.ModelChoiceField object at 0x00000000047FEEF0>), ('consult_courses', <django.forms.models.ModelMultipleChoiceField object at 0x000000000480B048>), ('consult_content', <django.forms.fields.CharField object at 0x000000000480B0B8>), ('status', <django.forms.fields.TypedChoiceField object at 0x000000000480B208>), ('consultant', <django.forms.models.ModelChoiceField object at 0x000000000480B2E8>)])
        #这张表中的所有字段对象
        for field_name,field_obj in dict(cls.base_fields).items():
            field_obj.widget.attrs.update({'class':"form-control"})

        return ModelForm.__new__(cls)

使用form类，生成控件

@login_required
def classRec_add(request,c_id):
    if request.method == "GET":
        CRfm = forms.CourseRecordForm()
    else:
        CRfm = forms.CourseRecordForm(data=request.POST)
        CRfm.save()
        return redirect("/teacher/classlist/%s/course_list.html"%c_id)

    return render(request,"teacher/course_add.html",locals())

views调用classRec_add,进行显示和添加数据

{% extends "index.html" %}
{% load my_func %}

{% block right-content-container %}

<div class="panel panel-primary">
    <div class="panel-heading">
        <h3 class="panel-title">课程记录添加</h3>
    </div>
    <div class="panel-body">
        <form action="" method="post" class="form-group form-horizontal">
        {% csrf_token %}
            {% for field in CRfm %}
            <div class="col-sm-6">
                <div class="col-lg-4">
                    <label for="" class="control-label">{{ field.label }}</label>
                </div>
                <div class="col-lg-8">
                    {{ field }}
                </div>
            </div>
            {% endfor %}
            <div>
                <input type="submit" class="btn btn-primary" value="添加">
            </div>
        </form>
    </div>
</div>
{% endblock %}

前端显示course_add.html

二：学员功能，实现课程显示，作业提交

（一）根据邮件中的账号密码登录

（二）实现查看班级，查看课程记录，提交作业

（1）由于这里也是table多使用，可以继续使用tableform

from Teacher.table_form import BaseForm

class ClassListForm(BaseForm):
    display_list = ["self","class_type","start_date","graduate_date",]   #,"couser","semester"
    field_tag = {"self":{"a":{"href":"127.0.0.1:8000"},},'score':{"a":{"href":"127.0.0.1:8080"},},'mng_homework':{"a":{"href":"/student/course.html"}}}   #在前面的标签会显示在内层
    attrs = {"class":"table table-hover"}
    extra_field = [{"score":{"verbose_name":"成绩","value":"成绩排名"}},{"mng_homework":{'verbose_name':"作业管理","value":"作业管理"}},]



class ClassRecordForm(BaseForm):
    display_list = ["self","title","teacher","content","has_homework","homework"]   #,"couser","semester"
    field_tag = {"self":{"a":{"href":"127.0.0.1:8000"},},'fin_homework':{"a":{"href":"/student/homework/{id}.html"}}}   #在前面的标签会显示在内层
    attrs = {"class":"table table-hover"}
    extra_field = [{"date":{"verbose_name":"日期","model_attr":"date","function":"strftime","args":("%Y-%m-%d %H:%M:%S",)}},{"fin_homework":{'verbose_name':"我的作业","value":"提交作业"}},]
    #额外自定义字段，若是有值value，会直接输出，否则会去当前实例集self.querysets的每一个实例中去获取相关的数据，使用函数去执行。字符串是调用自己的内置方法，function是调用自定义方法

    def __init__(self,model,querysets):
        super(ClassRecordForm, self).__init__(model,querysets)

（2）view中调用，显示班级和课程，前端也是{{forms|safe}}

# Create your views here.
@login_required
def couse_list(request):
    course_list = models.CourseRecord.objects.filter(
        class_grade__student=request.user.userprofile.student
    ).all()

    forms = ClassRecordForm(models.CourseRecord,course_list)
    forms.register()

    return render(request,"student/class_list.html",locals())


@login_required
def AllClass(request):
    class_list = models.ClassList.objects.filter(
        student = request.user.userprofile.student
    ).all()

    forms = ClassListForm(models.ClassList,class_list)
    forms.register()

    return render(request,"student/class.html",locals())

显示班级和课程

（3）使用forms表单显示数据，使用Dropzone添加作业

from django.forms import ModelForm,forms
from repository import models

class CourseRecordForm(ModelForm):
    class Meta:
        model = models.CourseRecord #将表与元类中的数据关联
        fields = "__all__"
        exclude = ["has_homework"]

    def __new__(cls, *args, **kwargs):
        #OrderedDict([('name', <django.forms.fields.CharField object at 0x00000000047FE9E8>), ('contact_type', <django.forms.fields.TypedChoiceField object at 0x00000000047FEBA8>), ('contact', <django.forms.fields.CharField object at 0x00000000047FECC0>), ('source', <django.forms.fields.TypedChoiceField object at 0x00000000047FEE10>), ('referral_from', <django.forms.models.ModelChoiceField object at 0x00000000047FEEF0>), ('consult_courses', <django.forms.models.ModelMultipleChoiceField object at 0x000000000480B048>), ('consult_content', <django.forms.fields.CharField object at 0x000000000480B0B8>), ('status', <django.forms.fields.TypedChoiceField object at 0x000000000480B208>), ('consultant', <django.forms.models.ModelChoiceField object at 0x000000000480B2E8>)])
        #这张表中的所有字段对象
        for field_name,field_obj in dict(cls.base_fields).items():
            field_obj.widget.attrs.update({'class':"form-control","disabled":"true"})

        return ModelForm.__new__(cls)

CourseRecordForm

@login_required
def homework(request,id):
    CRModel = models.CourseRecord.objects.filter(id=id,has_homework=True)

    if not CRModel.exists():
        return HttpResponse("无作业")

    CRInfo = CRModel.get()
    cus_dir = os.path.join(conf.settings.STUDENT_HOMEWORK_DIR, str(id), str(request.user.userprofile.student.id))
    if not os.path.isdir(cus_dir):
        os.makedirs(cus_dir)

    file_info = []
    file_names = os.listdir(cus_dir)
    for filename in file_names:
        file_info.append(os.stat(os.path.join(cus_dir,filename)))

    if request.method == "GET":
        form = myforms.CourseRecordForm(instance=CRInfo)
    else:
        status = {
            'status': True,
            "message": None
        }
        print(request.FILES)  # 需要去接收文件，前端状态才会是true
        if len(os.listdir(cus_dir)) >= 2:
            status['status'] = False
            status['message'] = "文件超出上传个数"
            return HttpResponse(json.dumps(status))

        file_obj = request.FILES.get("file")

        with open(os.path.join(cus_dir, file_obj.name), "wb") as fp:
            for chunks in file_obj.chunks():
                fp.write(chunks)

        return HttpResponse(json.dumps(status))

    return render(request,"student/homework.html",locals())

homework作业显示和添加

（4）前端代码,使用Dropzone处理数据，以及ajax删除数据

{% extends "index.html" %}
{% load my_func %}

{% block extra-link %}
<link rel="stylesheet" href="/static/plugins/dropzone/dropzone.css">
{% endblock %}


{% block right-content-container %}

<div class="panel panel-primary">
    <div class="panel-heading">
        <h3 class="panel-title">作业提交</h3>
    </div>
    <div class="panel-body">
        {{ form }}
        <div class="col-sm-12">
        <table class="table table-hover" id="file_table">
          <caption><label class="control-label" style="padding-top: 0px;">已上传的文件目录</label></caption>
          <thead>
            <tr>
              <th>文件名</th>
              <th>大小(KB)</th>
              <th>上传时间</th>
              <th>删除</th>
            </tr>
          </thead>
          <tbody>
            {% for file in file_info %}
                <tr>
                    <td>{% get_list_value file_names forloop.counter0  %}</td>
                    <td>{{ file.st_size }}</td>
                    <td>{% get_date_str file.st_atime %}</td>
                    <td><span style="color: red;" class="glyphicon glyphicon-remove" onclick="deleteFile(this);"></span></td>
                </tr>
            {% endfor %}
          </tbody>
        </table>
        <form action="{% url 'homework' CRInfo.id %}" id="myAwesomeDropzone" class="dropzone">
            {% csrf_token %}
          <div class="fallback">
            <input name="file" type="file" multiple />
          </div>
        </form>
  </div>
    </div>
</div>
{% endblock %}

{% block extra-js %}
<script src="/static/plugins/dropzone/dropzone.js"></script>
<script>
$(function () {
    Dropzone.options.myAwesomeDropzone = {
      paramName: "file", // The name that will be used to transfer the file
      maxFilesize: 2, // MB
      maxFiles:2,
      parallelChunkUploads:true,
      accept: function(file, done) {
        if (file.name == "justinbieber.jpg") {
          done("Naha, you don't.");
        }
        else { done(); }
      },
      init: function() {
        this.on("success", function(file,respone) {
            /* Maybe display some more file information on your page */
            var rep = JSON.parse(respone)
            if(!rep.status){
                alert(rep.message);
                return;
            }else{
                var myDate = new Date();
                var str_tm = myDate.toLocaleString();
                str_tm = str_tm.replace(///g, "-");
                str_tm = str_tm.replace(/[u4e00-u9fa5]+/g, "");

                var tr = "<tr><td>"+file.name+"</td><td>"+file.size+"</td><td>"+str_tm+"</td><td>"+'<span style="color: red;"  onclick="deleteFile(this);" class="glyphicon glyphicon-remove"></span></td></tr>'
                $("#file_table").append(tr);
            }
        });
      }
    };
});


function deleteFile(ths){
    var filename = $($(ths).parents("tr").children()[0]).text()
    $.ajax({
        url:"/student/delete_file.html",
        data:{'c':'{{ id }}','f':filename,'csrfmiddlewaretoken':'{{ csrf_token }}'},
        dataType:"json",
        type:"post",
        success:function(data){
            if(data.status){
                $(ths).parents("tr").remove()
            }else{
                alert(data.message)
            }
        }
    })
}

</script>

{% endblock %}

homework.html

（5）后台处理数据删除

@login_required
def delete_files(request):
    if request.method == "POST":
        status = {
            'status':True,
            'message':""
        }
        c_id = request.POST['c']
        filename = request.POST['f']

        current_path = os.path.join(conf.settings.STUDENT_HOMEWORK_DIR, str(c_id), str(request.user.userprofile.student.id))
        file_path = os.path.join(current_path,filename)
        print(file_path)
        if not os.path.isfile(file_path):
            status['status']=False
            status['message'] = "没有权限"
            return HttpResponse(json.dumps(status))
        else:
            os.remove(file_path)

        return HttpResponse(json.dumps(status))

delete_files根据ajax上传数据删除文件

总结：学会偷懒，化繁为简，学会总结业务，再去动态处理，而不是一直对数据库的增删改查，和重复一个业务逻辑

相关阅读:
ZOJ 1217 eight
COJ 1080 A simple maze
八数码（双向广搜）
HDOJ 1043 eight
[HDOJ] 小兔的棋盘
 ZOJ 2110 Tempter of the Bone
POJ 2406 Power Strings
[HDOJ] goagain的超级数列
 COJ 1216 异或最大值
 八数码（IDA*）
原文地址：https://www.cnblogs.com/ssyfj/p/9084942.html