ORM自定义第三张表注意

标签：person   key   reason   自定义   asc   字段   man   tom   rom   

from django.db import models
from django.db import models

class Person(models.Model):
    ‘‘‘人‘‘‘
    name = models.CharField(max_length=50)

class Group(models.Model):
    ‘‘‘组‘‘‘
    name = models.CharField(max_length=128)
    members = models.ManyToManyField(
        Person,
        through=‘Membership‘,
        through_fields=(‘group‘, ‘person‘),
    )

class Membership(models.Model):
    ‘‘‘
    会员
    ‘‘‘
    group = models.ForeignKey(Group, on_delete=models.CASCADE)
    person = models.ForeignKey(Person, on_delete=models.CASCADE)
    inviter = models.ForeignKey(
        Person,
        on_delete=models.CASCADE,
        related_name="membership_invites",
    )
    invite_reason = models.CharField(max_length=64)

through_fields=(‘group‘, ‘person‘),  通过后端返回的是Membership   注意

(‘group‘, ‘person‘)  第一个字段指向自己。第二字段指向别人

ORM自定义第三张表注意

标签：person   key   reason   自定义   asc   字段   man   tom   rom   

原文地址：http://www.cnblogs.com/tiantao36/p/7574724.html