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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
# -*- coding: UTF-8 -*-
from django.db import models
from django.contrib.auth.models import User as UserAlias
from south.modelsinspector import add_introspection_rules
on_delete_is_available = hasattr(models, "PROTECT") # models here is django.db.models
def default_func():
return "yays"
# An empty case.
class Other1(models.Model): pass
# Another one
class Other3(models.Model): pass
def get_sentinel_object():
"""
A function to return the object to be used in place of any deleted object,
when using the SET option for on_delete.
"""
# Create a new one, so we always have an instance to test with. Can't work!
return Other3()
# Nastiness.
class HorribleModel(models.Model):
"A model to test the edge cases of model parsing"
ZERO, ONE = 0, 1
# First, some nice fields
name = models.CharField(max_length=255)
short_name = models.CharField(max_length=50)
slug = models.SlugField(unique=True)
# A ForeignKey, to a model above, and then below
o1 = models.ForeignKey(Other1)
o2 = models.ForeignKey('Other2')
if on_delete_is_available:
o_set_null_on_delete = models.ForeignKey('Other3', null=True, on_delete=models.SET_NULL)
o_cascade_delete = models.ForeignKey('Other3', null=True, on_delete=models.CASCADE, related_name="cascademe")
o_protect = models.ForeignKey('Other3', null=True, on_delete=models.PROTECT, related_name="dontcascademe")
o_default_on_delete = models.ForeignKey('Other3', null=True, default=1, on_delete=models.SET_DEFAULT, related_name="setmedefault")
o_set_on_delete_function = models.ForeignKey('Other3', null=True, default=1, on_delete=models.SET(get_sentinel_object), related_name="setsentinel")
o_set_on_delete_value = models.ForeignKey('Other3', null=True, default=1, on_delete=models.SET(get_sentinel_object()), related_name="setsentinelwithactualvalue") # dubious case
o_no_action_on_delete = models.ForeignKey('Other3', null=True, default=1, on_delete=models.DO_NOTHING, related_name="deletemeatyourperil")
# Now to something outside
user = models.ForeignKey(UserAlias, related_name="horribles")
# Unicode!
code = models.CharField(max_length=25, default="↑↑↓↓←→←→BA")
# Odd defaults!
class_attr = models.IntegerField(default=ZERO)
func = models.CharField(max_length=25, default=default_func)
# Time to get nasty. Define a non-field choices, and use it
choices = [('hello', '1'), ('world', '2')]
choiced = models.CharField(max_length=20, choices=choices)
class Meta:
db_table = "my_fave"
verbose_name = "Dr. Strangelove," + \
"""or how I learned to stop worrying
and love the bomb"""
# Now spread over multiple lines
multiline = \
models.TextField(
)
# Special case.
class Other2(models.Model):
# Try loading a field without a newline after it (inspect hates this)
close_but_no_cigar = models.PositiveIntegerField(primary_key=True)
class CustomField(models.IntegerField):
def __init__(self, an_other_model, **kwargs):
super(CustomField, self).__init__(**kwargs)
self.an_other_model = an_other_model
add_introspection_rules([
(
[CustomField],
[],
{'an_other_model': ('an_other_model', {})},
),
], ['^south\.tests\.fakeapp\.models\.CustomField'])
class BaseModel(models.Model):
pass
class SubModel(BaseModel):
others = models.ManyToManyField(Other1)
custom = CustomField(Other2)
class CircularA(models.Model):
c = models.ForeignKey('CircularC')
class CircularB(models.Model):
a = models.ForeignKey(CircularA)
class CircularC(models.Model):
b = models.ForeignKey(CircularB)
class Recursive(models.Model):
self = models.ForeignKey('self')
|
