1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
from django.db import models
from datetime import datetime
# M2M described on one of the models
class Person(models.Model):
name = models.CharField(max_length=128)
class Meta:
ordering = ('name',)
def __unicode__(self):
return self.name
class Group(models.Model):
name = models.CharField(max_length=128)
members = models.ManyToManyField(Person, through='Membership')
custom_members = models.ManyToManyField(Person, through='CustomMembership', related_name="custom")
nodefaultsnonulls = models.ManyToManyField(Person, through='TestNoDefaultsOrNulls', related_name="testnodefaultsnonulls")
class Meta:
ordering = ('name',)
def __unicode__(self):
return self.name
class Membership(models.Model):
person = models.ForeignKey(Person)
group = models.ForeignKey(Group)
date_joined = models.DateTimeField(default=datetime.now)
invite_reason = models.CharField(max_length=64, null=True)
class Meta:
ordering = ('date_joined', 'invite_reason', 'group')
def __unicode__(self):
return "%s is a member of %s" % (self.person.name, self.group.name)
class CustomMembership(models.Model):
person = models.ForeignKey(Person, db_column="custom_person_column", related_name="custom_person_related_name")
group = models.ForeignKey(Group)
weird_fk = models.ForeignKey(Membership, null=True)
date_joined = models.DateTimeField(default=datetime.now)
def __unicode__(self):
return "%s is a member of %s" % (self.person.name, self.group.name)
class Meta:
db_table = "test_table"
class TestNoDefaultsOrNulls(models.Model):
person = models.ForeignKey(Person)
group = models.ForeignKey(Group)
nodefaultnonull = models.CharField(max_length=5)
class PersonSelfRefM2M(models.Model):
name = models.CharField(max_length=5)
friends = models.ManyToManyField('self', through="Friendship", symmetrical=False)
def __unicode__(self):
return self.name
class Friendship(models.Model):
first = models.ForeignKey(PersonSelfRefM2M, related_name="rel_from_set")
second = models.ForeignKey(PersonSelfRefM2M, related_name="rel_to_set")
date_friended = models.DateTimeField()
|
