S20_DAY19--课堂笔记

博客园

1 设计表关系

登陆与注册 ：User blog
系统首页： article article_detail
个人站点： 标签表，分类表
文章详细页：文章点赞踩灭表 评论表

from django.db import models

# Create your models here.


from django.contrib.auth.models import AbstractUser


class UserInfo(AbstractUser):
    """
    用户信息
    """
    nid = models.AutoField(primary_key=True)
    telephone = models.CharField(max_length=11, null=True, unique=True)
    avatar = models.FileField(upload_to='avatars/', default="/avatars/default.png")
    create_time = models.DateTimeField(verbose_name='创建时间', auto_now_add=True)

    blog = models.OneToOneField(to='Blog', to_field='nid', null=True)

    def __str__(self):
        return self.username


class Blog(models.Model):
    """
    博客(个人站点)信息
    """

    nid = models.AutoField(primary_key=True)
    title = models.CharField(verbose_name='个人博客标题', max_length=64)
    site = models.CharField(verbose_name='个人博客后缀', max_length=32, unique=True)
    theme = models.CharField(verbose_name='博客主题', max_length=32)

    def __str__(self):
        return self.title


class Category(models.Model):
    """
    博主个人文章分类表
    """
    nid = models.AutoField(primary_key=True)
    title = models.CharField(verbose_name='分类标题', max_length=32)
    blog = models.ForeignKey(verbose_name='所属博客', to='Blog', to_field='nid')

    def __str__(self):
        return self.title


class Tag(models.Model):
    nid = models.AutoField(primary_key=True)
    title = models.CharField(verbose_name='标签名称', max_length=32)
    blog = models.ForeignKey(verbose_name='所属博客', to='Blog', to_field='nid')

    def __str__(self):
        return self.title


class Article(models.Model):
    nid = models.AutoField(primary_key=True)
    title = models.CharField(max_length=50, verbose_name='文章标题')
    desc = models.CharField(max_length=255, verbose_name='文章描述')
    create_time = models.DateTimeField(verbose_name='创建时间')

    # comment_count=models.IntegerField(default=0)
    # up_count=models.IntegerField(default=0)
    # down_count=models.IntegerField(default=0)

    category = models.ForeignKey(to='Category', to_field='nid', null=True)
    user = models.ForeignKey(verbose_name='作者', to='UserInfo', to_field='nid')
    tags = models.ManyToManyField(
        to="Tag",
        through='Article2Tag',
        through_fields=('article', 'tag'),
    )

    def __str__(self):
        return self.title


class ArticleDetail(models.Model):
    """
    文章详细表
    """
    nid = models.AutoField(primary_key=True)
    content = models.TextField()
    article = models.OneToOneField(to='Article', to_field='nid')


class Article2Tag(models.Model):
    nid = models.AutoField(primary_key=True)
    article = models.ForeignKey(verbose_name='文章', to="Article", to_field='nid')
    tag = models.ForeignKey(verbose_name='标签', to="Tag", to_field='nid')

    class Meta:
        unique_together = [
            ('article', 'tag'),
        ]

    def __str__(self):
        v = self.article.title + "--" + self.tag.title
        return v


class ArticleUpDown(models.Model):
    """
    点赞表
    """

    nid = models.AutoField(primary_key=True)
    user = models.ForeignKey('UserInfo', null=True)
    article = models.ForeignKey("Article", null=True)
    is_up = models.BooleanField(default=True)

    class Meta:
        unique_together = [
            ('article', 'user'),
        ]


class Comment(models.Model):
    """

    评论表

    """
    nid = models.AutoField(primary_key=True)
    article = models.ForeignKey(verbose_name='评论文章', to='Article', to_field='nid')
    user = models.ForeignKey(verbose_name='评论者', to='UserInfo', to_field='nid')
    content = models.CharField(verbose_name='评论内容', max_length=255)
    create_time = models.DateTimeField(verbose_name='创建时间', auto_now_add=True)

    parent_comment = models.ForeignKey('self', null=True)

    def __str__(self):
        return self.content

思考 

由于UserInfo(AbstractUser) 不同于其他类的继承关系，migrate的时候可能会报错。

解决办法：编辑[项目]/settings，添加

AUTH_USER_MODEL="blog.UserInfo"

 

2 基于ajax和认证组件实现的登陆验证

3 基于ajax和forms组件实现的注册功能

---- forms组件钩子
---- 上传文件

4 系统首页

5 个人站点页面(ORM)

6 文章详细页的设计

7 点赞与评论

8 文本编辑器与bs模块防止xss攻击（对于文章的增删改查）

 

content-Type：

if POST:

forms
name="alex"
age=122
ajax
data:{
name="alex"
age=122
}

"GET http/1.1 url? 请求头 请求体"


if urlencoded:

"GET http/1.1 url? 请求头 name=alex&age=122"

if json:

"GET http/1.1 url? 请求头 '{"name":"alex","age":122}'"

if formdata:

在ajax：
$.ajax({

url:"",
type:"post",
contentType:false,
processData:false,
data:formdata,
success:function (data) {
console.log(data)
}

})

今日作业：

1 加入钩子验证：
  1.1  校验用户名是否存在
  1.2  校验两次密码是否一致

2 校验成功，添加记录

今日总结

上节回顾

番外 

1.ForeignKey(Verbose_name)

2.查看源码：

from django.conf import settings

from django.conf import global_settings

is_valid()源码