1 from django.db import models
 2
 3 # Create your models here.
 4
 5
 6 class Parent(models.Model):
 7     name = models.CharField(max_length=64, verbose_name=u'姓名')
 8     id_num = models.BigIntegerField(verbose_name=u'身份证号', unique=True)
 9
10     def __str__(self):
11         return self.name
12
13     class Meta:
14         verbose_name = u'父亲'
15         verbose_name_plural = u'父亲'
16
17
18 class Mother(models.Model):
19     name = models.CharField(max_length=64, verbose_name=u'姓名')
20     id_num = models.BigIntegerField(verbose_name=u'身份证号', unique=True)
21
22     def __str__(self):
23         return self.name
24
25     class Meta:
26         verbose_name = u'母亲'
27         verbose_name_plural = u'母亲'
28
29
30 class Brothers(models.Model):
31     name = models.ManyToManyField('Child', verbose_name=u'我的兄弟')
32
33     class Meta:
34         verbose_name = u'兄弟'
35         verbose_name_plural = u'兄弟'
36
37
38 class Child(models.Model):
39     name = models.CharField(verbose_name=u'我的姓名', max_length=60)
40     my_parent = models.ForeignKey('Parent', verbose_name=u'我的父亲')
41     my_mother = models.ForeignKey('Mother', verbose_name=u'我的母亲', related_name="%(app_label)s_%(class)s_related")
42     my_big_brother = models.ForeignKey('self', related_name="%(app_label)s_%(class)s_related_little_brother", blank=True, null=True, verbose_name=u'我大哥')
43
44     def __str__(self):
45         return "%s" % self.name
46
47     class Meta:
48         verbose_name = u'儿子'
49         verbose_name_plural = u'儿子'
50         unique_together = ('name', 'my_parent', 'my_mother')

 1 from django.shortcuts import render,HttpResponse
 2 from family import models
 3
 4 # Create your views here.
 5
 6
 7 def index(request):
 8     all_child= models.Child.objects.all()
 9     print(all_child)  # 所有孩子
10     little = models.Child.objects.filter(name='小耀耀')
11     print(little)  # 找到小耀耀这个孩子
12     print(little[0].my_mother)  # 他妈妈
13     print(little[0].my_parent)  # 他爸爸
14     print(little[0].my_big_brother)  # 他大哥
15     print(little[0].family_child_related_little_brother.select_related())  # 他的兄弟
16     all_mother = models.Mother.objects.all()
17     all_father = models.Parent.objects.all()
18     print(all_mother, all_father)
19     print(all_mother.get(name='李冰冰'))  # 找到李冰冰
20     libingbing = all_mother.get(name='李冰冰')
21     print(libingbing.family_child_related.select_related())  # 李冰冰所有的儿子
22     print(all_father.get(name='刘子凡'))  # 找到刘子凡
23     liuzifan = all_father.get(name='刘子凡')
24     print(liuzifan.child_set.select_related())  # 找到刘子凡的所有儿子

all_brothers = models.Brothers.objects.all()print(all_brothers[0])  # 取第一个兄弟成员print(all_brothers[0].name.select_related())

25     return HttpResponse(all_child)

 1 [<Child: 小毛>, <Child: 小花>, <Child: 小黑>, <Child: 小耀耀>, <Child: 小耀耀他弟>, <Child: 小子凡>, <Child: 小子凡他弟>, <Child: 小小子凡>]
 2 [<Child: 小耀耀>]
 3 范冰冰
 4 刘耀
 5 小毛
 6 [<Child: 小耀耀他弟>]
 7 [<Mother: 宋慧乔>, <Mother: 范冰冰>, <Mother: 李冰冰>] [<Parent: 曾春云>, <Parent: 刘子凡>, <Parent: 刘耀>]
 8 李冰冰
 9 [<Child: 小花>, <Child: 小黑>, <Child: 小子凡>, <Child: 小子凡他弟>, <Child: 小小子凡>]
10 刘子凡
11 [<Child: 小毛>, <Child: 小黑>, <Child: 小子凡>, <Child: 小子凡他弟>, <Child: 小小子凡>]

1 little = models.Child.objects.filter(name='小耀耀')

1     all_brothers = models.Brothers.objects.all()
2     print(all_brothers[0])  # 取第一个兄弟成员
3     print(all_brothers[0].name.select_related())
4     print(little[0].brothers_set.select_related())  # 如果Brother表没有设置related_name,则只能这种方式访问
5     print(little[0].my_brother.select_related())  # 如果设置related_name则以related_name访问

1 class Brothers(models.Model):
2     name = models.ManyToManyField('Child', verbose_name=u'我的兄弟', related_name='my_brother')