构建在线教育平台的基础环境(2)

创建工程与创建相应的app

django-admin startproject MxOnline

python3 manage.py startapp users
python3 manage.py startapp course
python3 manage.py startapp organization
python3 manage.py startapp operation

对于user中，由于userprofile不能够完全满足我们的需求，因此。自定义userprofile

安装：pillow，pymysql「用来处理图片，连接数据库」

创建users/model

包括：用户的个人信息，邮箱与轮播图

from django.db import models
from django.contrib.auth.models import AbstractUser
from datetime import datetime


class UserProfile(AbstractUser):

    gender_choices = (
        ('male','男'),
        ('female','女')
    )

    nick_name = models.CharField('昵称',max_length=50,default='')
    birthday = models.DateField('生日',null=True,blank=True)
    gender = models.CharField('性别',max_length=10,choices=gender_choices,default='female')
    adress = models.CharField('地址',max_length=100,default='')
    mobile = models.CharField('手机号',max_length=11,null=True,blank=True)
    image = models.ImageField(upload_to='image/%Y%m',default='image/default.png',max_length=100)
#verbose_name指定在admin管理界面中显示中文；
    # verbose_name表示单数形式的显示，verbose_name_plural表示复数形式的显示；中文的单数和复数一般不作区别。

    class Meta:
        verbose_name = '用户信息'
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.username


#邮箱的数据模型构建

class EmailVerifyRecord(models.Model):
    send_choices = (
        ('register','注册'),
        ('forget','找回密码')
    )

    code = models.CharField('验证码',max_length=20)
    email = models.EmailField('邮箱',max_length=50)
    send_type = models.CharField(choices=send_choices,max_length=10)
    send_time = models.DateTimeField(default=datetime.now)

    class Meta:
        verbose_name = '邮箱验证码'
        verbose_name_plural = verbose_name


class Banner(models.Model):
    title = models.CharField('标题',max_length=100)
    image = models.ImageField('轮播图',upload_to='banner/%Y%m',max_length=100)
    url = models.URLField('访问地址',max_length=200)
    index = models.IntegerField('顺序',default=100)
    add_time = models.DateTimeField('添加时间',default=datetime.now)

    class Meta:
        verbose_name = '轮播图'
        verbose_name_plural = verbose_name

重载AUTH_USER_MODEL

AUTH_USER_MODEL = 'users.UserProfile'

设计数据库为Mysql

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'mxonline',        #数据库名字
        'USER': 'root',          #账号
        'PASSWORD': '123456',      #密码
        'HOST': '127.0.0.1',    #IP
        'PORT': '3306',                   #端口
    }
}

init.py里面导入pymysql模块

# user/__init__.py

import pymysql
pymysql.install_as_MySQLdb()

课程：

• Course  课程表
• Lesson  章节信息
• Video    视频
• CourseResource  课程资源

from datetime import datetime

from django.db import models


class Course(models.Model):
    DEGREE_CHOICES = (
        ("cj", "初级"),
        ("zj", "中级"),
        ("gj", "高级")
    )
    name = models.CharField("课程名",max_length=50)
    desc = models.CharField("课程描述",max_length=300)
    detail = models.TextField("课程详情")
    degree = models.CharField('难度',choices=DEGREE_CHOICES, max_length=2)
    learn_times = models.IntegerField("学习时长(分钟数)",default=0)
    students = models.IntegerField("学习人数",default=0)
    fav_nums = models.IntegerField("收藏人数",default=0)
    image = models.ImageField("封面图",upload_to="courses/%Y/%m",max_length=100)
    click_nums = models.IntegerField("点击数",default=0)
    add_time = models.DateTimeField("添加时间",default=datetime.now,)

    class Meta:
        verbose_name = "课程"
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.name


class Lesson(models.Model):
    course = models.ForeignKey(Course,verbose_name='课程',on_delete=models.CASCADE)
    name = models.CharField("章节名",max_length=100)
    add_time = models.DateTimeField("添加时间",default=datetime.now)

    class Meta:
        verbose_name = "章节"
        verbose_name_plural = verbose_name

    def __str__(self):
        return '《{0}》课程的章节 >> {1}'.format(self.course, self.name)


class Video(models.Model):
    lesson = models.ForeignKey(Lesson, verbose_name="章节",on_delete=models.CASCADE)
    name = models.CharField("视频名",max_length=100)
    add_time = models.DateTimeField("添加时间", default=datetime.now)

    class Meta:
        verbose_name = "视频"
        verbose_name_plural = verbose_name


class CourseResource(models.Model):
    course = models.ForeignKey(Course, verbose_name="课程",on_delete=models.CASCADE)
    name = models.CharField("名称",max_length=100)
    download = models.FileField("资源文件",upload_to="course/resource/%Y/%m",max_length=100)
    add_time = models.DateTimeField("添加时间", default=datetime.now)

    class Meta:
        verbose_name = "课程资源"
        verbose_name_plural = verbose_name

 教育机构

• CourseOrg  课程机构基本信息
• Teacher       教师基本信息
• CityDict        城市信息

from django.db import models
from datetime import datetime


class CityDict(models.Model):
    name = models.CharField('城市',max_length=20)
    desc = models.CharField('描述',max_length=200)
    add_time = models.DateTimeField(default=datetime.now)

    class Meta:
        verbose_name = '城市'
        verbose_name_plural= verbose_name


class CourseOrg(models.Model):
    name = models.CharField('机构名称',max_length=50)
    desc = models.TextField('机构描述')
    click_nums = models.IntegerField('点击数',default=0)
    fav_nums = models.IntegerField('收藏数',default=0)
    image = models.ImageField('封面图',upload_to='org/%Y%m',max_length=100)
    address = models.CharField('机构地址',max_length=150,)
    city = models.ForeignKey(CityDict,verbose_name='所在城市',on_delete=models.CASCADE)
    add_time = models.DateTimeField(default=datetime.now)

    class Meta:
        verbose_name = '课程机构'
        verbose_name_plural = verbose_name


class Teacher(models.Model):
    org = models.ForeignKey(CourseOrg,verbose_name='所属机构',on_delete=models.CASCADE)
    name = models.CharField('教师名',max_length=50)
    work_years = models.IntegerField('工作年限',default=0)
    work_company = models.CharField('就职公司',max_length=50)
    work_position = models.CharField('公司职位',max_length=50)
    points = models.CharField('教学特点',max_length=50)
    click_nums = models.IntegerField('点击数',default=0)
    fav_nums = models.IntegerField('收藏数',default=0)
    add_time = models.DateTimeField(default=datetime.now)

    class Meta:
        verbose_name = '教师'
        verbose_name_plural = verbose_name

    def __str__(self):
        return "[{0}]的教师: {1}".format(self.org, self.name)

 操作：

• UseAsk 用户咨询
• UserMessage  用户消息表
• CourseComments 用户评论
• UserCourse 用户学习的课程
• UserFavorite 用户收藏

from datetime import datetime

from django.db import models

from course.models import Course
from users.models import UserProfile


class UserAsk(models.Model):
    name = models.CharField('姓名',max_length=20)
    mobile = models.CharField('手机',max_length=11)
    course_name = models.CharField('课程名',max_length=50)
    add_time = models.DateTimeField('添加时间',default=datetime.now)

    class Meta:
        verbose_name = '用户咨询'
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.name


class CourseComments(models.Model):
    user = models.ForeignKey(UserProfile,verbose_name='用户',on_delete=models.CASCADE)
    course = models.ForeignKey(Course,verbose_name='课程',on_delete=models.CASCADE)
    comments = models.CharField('评论',max_length=200)
    add_time = models.DateTimeField('添加时间', default=datetime.now)

    class Meta:
        verbose_name = '课程评论'
        verbose_name_plural = verbose_name


class UserFavorite(models.Model):
    FAV_TYPE = (
        (1,'课程'),
        (2,'课程机构'),
        (3,'讲师')
    )

    user = models.ForeignKey(UserProfile,verbose_name='用户',on_delete=models.CASCADE)
    fav_id = models.IntegerField('数据id',default=0)
    fav_type = models.IntegerField(verbose_name='收藏类型',choices=FAV_TYPE,default=1)
    add_time = models.DateTimeField('添加时间', default=datetime.now)

    class Meta:
        verbose_name = '用户收藏'
        verbose_name_plural = verbose_name


class UserMessage(models.Model):
    user = models.IntegerField('接受用户',default=0)
    message = models.CharField('消息内容',max_length=500)
    has_read = models.BooleanField('是否已读',default=False)
    add_time = models.DateTimeField('添加时间', default=datetime.now)

    class Meta:
        verbose_name = '用户消息'
        verbose_name_plural = verbose_name


class UserCourse(models.Model):
    user = models.ForeignKey(UserProfile,verbose_name='用户',on_delete=models.CASCADE)
    course = models.ForeignKey(Course,verbose_name='课程',on_delete=models.CASCADE)
    add_time = models.DateTimeField('添加时间', default=datetime.now)

    class Meta:
        verbose_name = '用户课程'
        verbose_name_plural = verbose_name

到settings的“INSTALLED_APPS”里面

INSTALLED_APPS = [

    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'users',
    'course',
    'organization',
    'operation',
]

迁移数据库

python3 manage.py makemigrations

python3 manage.py migrate

创建一个名为apps的包，并将所有的app移动到里面去。

最后启动即可：sudo python3 manage.py runserver