數據庫 表關系設計參考
阿新 • • 發佈:2018-05-11
eat self. sel pwd des 關聯 出版社 rfi userinfo
表關系設計
出版社表關系
# 出版社表 class Publisher(models.Model): name = models.CharField(max_length=32) addr = models.CharField(max_length=128) phone = models.IntegerField() def __str__(self): return self.name # 作者表 class Author(models.Model): name = models.CharField(max_length=16) # 作者和詳情表示一對一關聯的 detail = models.OneToOneField(to="AuthorDetail") # 作者和書的關系是多對多 books = models.ManyToManyField(to="Book") def __str__(self): return self.name # 作者詳情表 class AuthorDetail(models.Model): city = models.CharField(max_length=32) email = models.EmailField() class Book(models.Model): title = models.CharField(max_length=16) price = models.DecimalField(max_digits=5, decimal_places=2) # 5位數字,兩位小數 999.99 # auto_now=True 每一次修改都自動更新時間;auto_now_add=True 第一次創建時自動填寫時間 publish_day = models.DateField(auto_now_add=True) # 書和出版社是多對一,通過外鍵關聯 publisher = models.ForeignKey(to="Publisher") memo = models.CharField(max_length=128, null=True) def __str__(self): return self.title
博客系統表關系
from django.contrib.auth.models import AbstractUser class UserInfo(AbstractUser): """ 用戶信息 """ nid = models.AutoField(primary_key=True) nickname = models.CharField(verbose_name='昵稱', max_length=32) 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='創建時間', auto_now_add=True) blog = models.OneToOneField(to='Blog', to_field='nid',null=True) def __str__(self): return self.username class Blog(models.Model): """ 博客信息 """ nid = models.AutoField(primary_key=True) title = models.CharField(verbose_name='個人博客標題', max_length=64) site = models.CharField(verbose_name='個人博客後綴', max_length=32, unique=True) theme = models.CharField(verbose_name='博客主題', max_length=32) def __str__(self): return self.title class Category(models.Model): """ 博主個人文章分類表 """ nid = models.AutoField(primary_key=True) title = models.CharField(verbose_name='分類標題', max_length=32) blog = models.ForeignKey(verbose_name='所屬博客', 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='標簽名稱', max_length=32) blog = models.ForeignKey(verbose_name='所屬博客', 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='文章標題') desc = models.CharField(max_length=255, verbose_name='文章描述') comment_count= models.IntegerField(default=0) up_count = models.IntegerField(default=0) down_count = models.IntegerField(default=0) create_time = models.DateTimeField(verbose_name='創建時間') homeCategory = models.ForeignKey(to='Category', to_field='nid', null=True) #siteDetaiCategory = models.ForeignKey(to='SiteCategory', 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): """ 文章詳細表 """ nid = models.AutoField(primary_key=True) content = models.TextField() article = models.OneToOneField(to='Article', to_field='nid') class Comment(models.Model): """ 評論表 """ nid = models.AutoField(primary_key=True) article = models.ForeignKey(verbose_name='評論文章', to='Article', to_field='nid') user = models.ForeignKey(verbose_name='評論者', to='UserInfo', to_field='nid') content = models.CharField(verbose_name='評論內容', max_length=255) create_time = models.DateTimeField(verbose_name='創建時間', auto_now_add=True) parent_comment = models.ForeignKey('self', null=True) def __str__(self): return self.content class ArticleUpDown(models.Model): """ 點贊表 """ 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 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='標簽', to="Tag", to_field='nid') class Meta: unique_together = [ ('article', 'tag'), ] def __str__(self): v=self.article.title+"----"+self.tag.title return v
權限系統表關系
class Menu(models.Model): caption=models.CharField(max_length=32) def __str__(self): return self.caption class UserInfo(models.Model): name=models.CharField(max_length=32) pwd=models.CharField(max_length=32,default=123) email=models.EmailField() roles=models.ManyToManyField(to="Role") def __str__(self): return self.name class Role(models.Model): title=models.CharField(max_length=32) permissions=models.ManyToManyField(to="Permission") def __str__(self): return self.title class Permission(models.Model): url=models.CharField(max_length=32) title=models.CharField(max_length=32) permission_group=models.ForeignKey("PermissionGroup",default=1) code=models.CharField(max_length=32,default="") parent=models.ForeignKey("self",default=1,null=True,blank=True) def __str__(self): return self.title class PermissionGroup(models.Model): caption=models.CharField(max_length=32) menu=models.ForeignKey("Menu",default=1) def __str__(self): return self.caption
數據庫 表關系設計參考