首先我们要设计一下表结构：
UserInfo(用户信息表) --------》一对一 -----------》Blog(博客信息表)
UserInfo(用户信息表) ---------》一对多 -----------》Article UpDown(点赞表)
UserInfo(用户信息表) ---------》一对多 -----------》Article Comment(评论表)
UserInfo(用户信息表)----------》一对多 -----------》Article(文章)
Blog(博客信息表) ----------------》 一对多 -----------》Category(个人博客文章分类表)
Blog(博客信息表) ----------------》一对多 ------------》Tag(标签表)
Category(个人博客文章分类表)--》 一对多 -------------》Article(文章表)
Tag(标签表) --------------------------》多对多 -------------》Article(文章表)
Article(文章表) ------------------------》一对一 -------------》ArticleDetail(文章详情表)
Article(文章表) ------------------------》一对多 --------------》Article UpDown(点赞表)
Article(文章表) ------------------------》一对多 ---------------》Article Comment(评论表)
from django.db import models # Create your models here. from django.contrib.auth.models import AbstractUser class UserInfo(AbstractUser): """ 用户信息表 """ nid = models.AutoField(primary_key=True) phone = models.CharField(max_length=11, null=True, unique=True) avatar = models.FileField(upload_to="avatars/", default="avatars/default.png") blog = models.OneToOneField(to="Blog", to_field="nid", null=True) def __str__(self): return self.username class Meta: verbose_name = "用户信息" verbose_name_plural = verbose_name class Blog(models.Model): """ 博客信息 """ nid = models.AutoField(primary_key=True) title = models.CharField(max_length=64) # 个人博客标题 theme = models.CharField(max_length=32) # 博客主题 def __str__(self): return self.title class Meta: verbose_name = "博客" verbose_name_plural = verbose_name class Category(models.Model): """ 个人博客文章分类 """ nid = models.AutoField(primary_key=True) title = models.CharField(max_length=32) # 分类标题 blog = models.ForeignKey(to="Blog", to_field="nid") # 外键关联博客，一个博客站点可以有多个分类 def __str__(self): return "{}-{}".format(self.blog.title, self.title) class Meta: verbose_name = "文章分类" verbose_name_plural = verbose_name class Tag(models.Model): """ 标签 """ nid = models.AutoField(primary_key=True) title = models.CharField(max_length=32) # 标签名 blog = models.ForeignKey(to="Blog", to_field="nid") # 所属博客 def __str__(self): return self.title class Meta: verbose_name = "标签" verbose_name_plural = verbose_name class Article(models.Model): """ 文章 """ nid = models.AutoField(primary_key=True) title = models.CharField(max_length=50) # 文章标题 desc = models.CharField(max_length=255) # 文章描述 create_time = models.DateTimeField(auto_now_add=True) # 创建时间 category = models.ForeignKey(to="Category", to_field="nid", null=True) user = models.ForeignKey(to="UserInfo", to_field="nid") tags = models.ManyToManyField( to="Tag", through="Article2Tag", through_fields=("article", "tag"), ) def __str__(self): return self.title class Meta: verbose_name = "文章" verbose_name_plural = verbose_name class ArticleDetail(models.Model): """ 文章详情表 """ nid = models.AutoField(primary_key=True) content = models.TextField() article = models.OneToOneField(to="Article", to_field="nid") class Meta: verbose_name = "文章详情" verbose_name_plural = verbose_name class Article2Tag(models.Model): """ 文章和标签的多对多关系表 """ nid = models.AutoField(primary_key=True) article = models.ForeignKey(to="Article", to_field="nid") tag = models.ForeignKey(to="Tag", to_field="nid") def __str__(self): return "{}-{}".format(self.article, self.tag) class Meta: unique_together = (("article", "tag"),) verbose_name = "文章-标签" verbose_name_plural = verbose_name class ArticleUpDown(models.Model): """ 点赞表 """ nid = models.AutoField(primary_key=True) user = models.ForeignKey(to="UserInfo", null=True) article = models.ForeignKey(to="Article", null=True) is_up = models.BooleanField(default=True) class Meta: unique_together = (("article", "user"),) verbose_name = "点赞" verbose_name_plural = verbose_name class Comment(models.Model): """ 评论表 """ nid = models.AutoField(primary_key=True) article = models.ForeignKey(to="Article", to_field="nid") user = models.ForeignKey(to="UserInfo", to_field="nid") content = models.CharField(max_length=255) # 评论内容 create_time = models.DateTimeField(auto_now_add=True) parent_comment = models.ForeignKey("self", null=True) def __str__(self): return self.content class Meta: verbose_name = "评论" verbose_name_plural = verbose_name