Django框架多表查询实例分析-创新互联
本文实例讲述了Django框架多表查询。分享给大家供大家参考,具体如下:
多表查询是模型层的重要功能之一, Django提供了一套基于关联字段独特的解决方案.
ForeignKey来自Django官方文档的模型示例:
from django.db import models class Blog(models.Model): name = models.CharField(max_length=100) tagline = models.TextField() class Author(models.Model): name = models.CharField(max_length=50) email = models.EmailField() class Entry(models.Model): blog = models.ForeignKey(Blog) authors = models.ManyToManyField(Author) headline = models.CharField(max_length=255) body_text = models.TextField() pub_date = models.DateField() mod_date = models.DateField() n_comments = models.IntegerField() n_pingbacks = models.IntegerField() rating = models.IntegerField()
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