边学边练之博客园----设计表

 1 from django.db import models
 2 
 3 # Create your models here.
 4 from django.db import models
 5 from django.contrib.auth.models import AbstractUser
 6 
 7 
 8 # Create your models here.
 9 
10 class UserInfo(AbstractUser):
11     nid = models.AutoField(primary_key=True)
12     tel = models.CharField(max_length=11, null=True, unique=True)
13     avatar = models.FileField(upload_to='avatars/', default='avatars/default.png')
14     create_time = models.DateTimeField(verbose_name='创建时间', auto_now_add=True)
15 
16     blog = models.OneToOneField(to='Blog', to_field='nid', null=True, on_delete=models.CASCADE)
17 
18     def __str__(self):
19         return self.username
20 
21 
22 class Blog(models.Model):
23     nid = models.AutoField(primary_key=True)
24     title = models.CharField(verbose_name='个人博客标题', max_length=64)
25     site_name = models.CharField(verbose_name='个人站点名称', max_length=64)
26     theme = models.CharField(verbose_name='主题', max_length=32)
27 
28 
29 class Category(models.Model):
30     nid = models.AutoField(primary_key=True)
31     title = models.CharField(max_length=32)
32 
33     blog = models.ForeignKey(to='Blog', to_field='nid', on_delete=models.CASCADE)
34 
35     def __str__(self):
36         return self.title
37 
38 
39 class Tag(models.Model):
40     nid = models.AutoField(primary_key=True)
41     title = models.CharField(max_length=32)
42 
43     blog = models.ForeignKey(to='Blog', to_field='nid', on_delete=models.CASCADE)
44 
45     def __str__(self):
46         return self.title
47 
48 
49 class Article(models.Model):
50     nid = models.AutoField(primary_key=True)
51     title = models.CharField(max_length=64)
52     desc = models.CharField(max_length=255)
53     create_time = models.DateTimeField(verbose_name='创建时间', auto_now_add=True)
54 
55     content = models.TextField()
56 
57     comment_count = models.IntegerField(default=0)            # 直接在这里加上这几项，就不需要去相关表里查找了
58     up_count = models.IntegerField(default=0)
59     down_count = models.IntegerField(default=0)
60 
61     user = models.ForeignKey(to='UserInfo',to_field='nid',on_delete=models.CASCADE)
62     category = models.ForeignKey(to='Category',to_field='nid',null=True,on_delete=models.CASCADE)
63     tags =  models.ManyToManyField(to='Tag',through='Article2Tag',through_fields=('article','tag'))
64 
65     def __str__(self):
66         return self.title
67 
68 class Article2Tag(models.Model):
69     nid = models.AutoField(primary_key=True)
70     article = models.ForeignKey(to='Article',to_field='nid',on_delete=models.CASCADE)
71     tag = models.ForeignKey(to='Tag',to_field='nid',on_delete=models.CASCADE)
72 
73     class Meta:
74         unique_together=[('article','tag')]  # 联合唯一
75 
76     def __str__(self):
77         v = self.article.title + "---" + self.tag.title
78         return v
79 
80 class ArticleUpDown(models.Model):
81     nid = models.AutoField(primary_key=True)
82     article = models.ForeignKey(to='Article',to_field='nid',null=True,on_delete=models.CASCADE)
83     user = models.ForeignKey(to='UserInfo',to_field='nid',null=True,on_delete=models.CASCADE)
84     is_up = models.BooleanField(default=True)
85 
86     class Meta:
87         unique_together=[('article','user')]
88 
89 class Comment(models.Model):
90     nid=models.AutoField(primary_key=True)
91     article = models.ForeignKey(to='Article',to_field='nid',on_delete=models.CASCADE)
92     user = models.ForeignKey(to='UserInfo',to_field='nid',on_delete=models.CASCADE)
93     content = models.CharField(max_length=255)
94     create_time = models.DateTimeField(verbose_name='创建时间',auto_now_add=True)
95     parent_comment = models.ForeignKey('self',null=True,on_delete=models.CASCADE)
96 
97     def __str__(self):
98         return self.content