1 项目&表创建

1 创建项目

• 创建虚拟环境

  virtualenv cnblog --python=python3.8
  

• 创建Django项目

  pip install Django==3.2
  pip install pymysql
  django-amdin startproject cnblog
  

• 创建app

  python manage.py startapp blog
  

• 配置mysql数据库

  DATABASES = {
  	'default': {
  		'ENGINE': 'django.db.backends.mysql',
  		'HOST': '127.0.0.1',  # 数据库主机
  		'PORT': 3306,  # 数据库端口
  		'USER': 'root',  # 数据库用户名
  		'PASSWORD': '',  # 数据库用户密码
  		'NAME': 'cnblog'  # 数据库名字
  	}
  }
  

• models表结构

from django.db import models
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, on_delete=models.CASCADE)

    def __str__(self):
        return self.username


class Blog(models.Model):
    """
    博客信息
    """
    nid = models.AutoField(primary_key=True)
    title = models.CharField(verbose_name='个人博客标题', max_length=64)
    site_name = models.CharField(verbose_name='站点名称', max_length=64)
    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', on_delete=models.CASCADE)

    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', on_delete=models.CASCADE)

    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', auto_now_add=True)
    content = models.TextField()

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

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

    def __str__(self):
        return self.title


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

    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, on_delete=models.CASCADE)
    article = models.ForeignKey("Article", null=True, on_delete=models.CASCADE)
    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', on_delete=models.CASCADE)
    user = models.ForeignKey(verbose_name='评论者', to='UserInfo', to_field='nid', on_delete=models.CASCADE)
    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, on_delete=models.CASCADE)

    def __str__(self):
        return self.content