BBS - 表、登录

一、博客系统得表关系

models.py

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 = 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', on_delete=models.CASCADE)

    def __str__(self):
        return self.title


class Tag(models.Model):
    """
    博主个人文章标签表
    """
    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):
    """
    文章信息
    """
    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')
    category = models.ForeignKey(to='Category', to_field='nid', null=True, on_delete=models.CASCADE)
    user = models.ForeignKey(verbose_name='作者', to='UserInfo', to_field='nid', on_delete=models.CASCADE)

    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', on_delete=models.CASCADE)


class Article2Tag(models.Model):
    """
    多对多,文章、标签得第三张表
    """
    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,踩灭表
    """
    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

操作配置：

AUTH_USER_MODEL = "blog.UserInfo"    

create database cnblog;

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'cnblog',
        'USER': 'root',
        'PASSWORD': '123',
        'HOST': '127.0.0.1',
        'PORT': 3306,
    }
}

import pymysql
pymysql.install_as_MySQLdb()

Tools/Run manage.py Task
makemigrations
migrate

。。。

结果：

二、基于Ajax和用户登录验证

验证码得获取：

方式一：

 <img width="260" height="35" src="/get_valid_img/" alt="">

def get_valid_img(request):
    # 方式一
    with open('girl.jpg','rb') as f:
        data = f.read()

    return HttpResponse(data)

方式二：

def get_valid_img(request):
    # 方式二
    """
    pip install pillow
    """
    import PIL
    from PIL import Image

    import random

    def get_random_color():
        return (random.randint(0,255),random.randint(0,255),random.randint(0,255))

    image = Image.new('RGB',(260,35),get_random_color())

    f = open('valid_code.png','wb')  # 存在磁盘上
    image.save(f,'png')

    f = open('valid_code.png','rb')
    data = f.read()
    f.close()

    return HttpResponse(data)

  

方式三：