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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
import django
from django.contrib.auth.models import User
from django.contrib.postgres.search import SearchVectorField
from django.db import connections, models
from django.utils import timezone
from psqlextra.models import PostgresPartitionedModel
from psqlextra.types import PostgresPartitioningMethod
import pgtrigger
import pgtrigger.utils
def _get_pg_maj_version(db): # pragma: no cover
connection = connections[db]
if connection.vendor == "postgresql":
with connection.cursor() as cursor:
return pgtrigger.utils.pg_maj_version(cursor)
class Router:
route_app_labels = ["tests"]
def allow_migrate(self, db, app_label, model_name=None, **hints):
"""
Ignore the parititon model for the "other" DB, for non-Postgres DBs,
and for Postgres DBs that are less than version 13
"""
pg_maj_version = _get_pg_maj_version(db)
if model_name == "partitionmodel" and (
db in ("sqlite", "other") or not pg_maj_version or pg_maj_version < 13
):
return False
class PartitionModel(PostgresPartitionedModel):
class PartitioningMeta:
method = PostgresPartitioningMethod.RANGE
key = ["timestamp"]
name = models.TextField()
timestamp = models.DateTimeField()
class Meta:
triggers = [pgtrigger.Protect(name="protect_delete", operation=pgtrigger.Delete)]
class OrderSchema(models.Model):
"""A model that only appears in the "schema1" schema"""
int_field = models.IntegerField()
class ReceiptSchema(models.Model):
"""A model that only appears in the "schema2" schema"""
char_field = models.CharField(max_length=128)
class Meta:
db_table = "table.with.dots"
class SearchModel(models.Model):
body_vector = SearchVectorField()
title_body_vector = SearchVectorField()
title = models.CharField(max_length=128)
body = models.TextField()
class Meta:
triggers = [
pgtrigger.UpdateSearchVector(
name="add_body_to_vector", vector_field="body_vector", document_fields=["body"]
),
pgtrigger.UpdateSearchVector(
name="add_body_title_to_vector",
vector_field="title_body_vector",
document_fields=["body", "title"],
),
]
@pgtrigger.register(
pgtrigger.Protect(name="protect_delete", operation=pgtrigger.Delete),
)
class CustomTableName(models.Model):
int_field = models.IntegerField(null=True, unique=True)
class Meta:
db_table = "order"
class TestModel(models.Model):
int_field = models.IntegerField(null=True, unique=True)
char_field = models.CharField(max_length=128, null=True)
float_field = models.FloatField(null=True)
class Meta:
unique_together = ("int_field", "char_field")
class LogEntry(models.Model):
"""Created when ToLogModel is updated"""
level = models.CharField(max_length=16)
old_field = models.CharField(max_length=16, null=True)
new_field = models.CharField(max_length=16, null=True)
class ToLogModel(models.Model):
"""For testing triggers that log records at statement and row level"""
field = models.CharField(max_length=16)
class Meta:
triggers = [
pgtrigger.Trigger(
name="update_of_statement_test",
level=pgtrigger.Statement,
operation=pgtrigger.UpdateOf("field"),
when=pgtrigger.After,
func=pgtrigger.Func(
f"""
INSERT INTO {LogEntry._meta.db_table}(level)
VALUES ('STATEMENT');
RETURN NULL;
"""
),
),
pgtrigger.Trigger(
name="after_update_statement_test",
level=pgtrigger.Statement,
operation=pgtrigger.Update,
when=pgtrigger.After,
referencing=pgtrigger.Referencing(old="old_values", new="new_values"),
func=f"""
INSERT INTO {LogEntry._meta.db_table}(level, old_field, new_field)
SELECT 'STATEMENT' AS level,
old_values.field AS old_field,
new_values.field AS new_field
FROM old_values
JOIN new_values ON old_values.id = new_values.id;
RETURN NULL;
""",
),
pgtrigger.Trigger(
name="after_update_row_test",
level=pgtrigger.Row,
operation=pgtrigger.Update,
when=pgtrigger.After,
condition=pgtrigger.Q(old__field__df=pgtrigger.F("new__field")),
func=(
f"INSERT INTO {LogEntry._meta.db_table}(level) VALUES ('ROW'); RETURN NULL;"
),
),
]
class CharPk(models.Model):
custom_pk = models.CharField(primary_key=True, max_length=32)
class TestTrigger(models.Model):
"""
For testing triggers
"""
field = models.CharField(max_length=16)
int_field = models.IntegerField(default=0)
dt_field = models.DateTimeField(default=timezone.now)
nullable = models.CharField(null=True, default=None, max_length=16)
fk_field = models.ForeignKey("auth.User", null=True, on_delete=models.CASCADE)
char_pk_fk_field = models.ForeignKey(CharPk, null=True, on_delete=models.CASCADE)
m2m_field = models.ManyToManyField(User, related_name="+")
class Meta:
triggers = [
pgtrigger.Trigger(
name="protect_misc_insert",
when=pgtrigger.Before,
operation=pgtrigger.Insert,
func="RAISE EXCEPTION 'no no no!';",
condition=pgtrigger.Q(new__field="misc_insert"),
),
]
class TestTriggerProxy(TestTrigger):
"""
For testing triggers on proxy models
"""
class Meta:
proxy = True
triggers = [
pgtrigger.Protect(name="protect_delete", operation=pgtrigger.Delete),
]
class TestDefaultThrough(TestTrigger.m2m_field.through):
class Meta:
proxy = True
triggers = [
pgtrigger.Protect(name="protect_it", operation=pgtrigger.Delete),
]
@pgtrigger.register(pgtrigger.SoftDelete(name="soft_delete", field="is_active"))
class SoftDelete(models.Model):
"""
For testing soft deletion. Deletions on this model will set
is_active = False without deleting the model
"""
is_active = models.BooleanField(default=True)
other_field = models.TextField()
class FkToSoftDelete(models.Model):
"""Ensures foreign keys to a soft delete model are deleted"""
ref = models.ForeignKey(SoftDelete, on_delete=models.CASCADE)
if django.VERSION >= (5, 2):
@pgtrigger.register(pgtrigger.SoftDelete(name="soft_delete_composite_pk", field="is_active"))
class SoftDeleteCompositePk(models.Model):
"""
For testing soft deletion with a composite primary key.
"""
id_1 = models.IntegerField()
id_2 = models.IntegerField()
pk = models.CompositePrimaryKey("id_1", "id_2")
is_active = models.BooleanField(default=True)
other_field = models.TextField()
@pgtrigger.register(pgtrigger.SoftDelete(name="soft_delete", field="custom_active"))
class CustomSoftDelete(models.Model):
"""
For testing soft deletion with a custom active field.
This trigger also helps ensure that triggers can have the same names
across multiple models.
"""
custom_active = models.BooleanField(default=True)
other_field = models.TextField()
@pgtrigger.register(
pgtrigger.FSM(
name="fsm",
field="transition",
transitions=[("unpublished", "published"), ("published", "inactive")],
)
)
class FSM(models.Model):
"""Tests valid transitions of a field"""
transition = models.CharField(max_length=32)
class ChangedCondition(models.Model):
"""
For testing changed conditions
"""
field = models.CharField(max_length=16)
int_field = models.IntegerField(default=0)
dt_field = models.DateTimeField(auto_now=True)
nullable = models.CharField(null=True, default=None, max_length=16)
fk_field = models.ForeignKey("auth.User", null=True, on_delete=models.CASCADE)
char_pk_fk_field = models.ForeignKey(CharPk, null=True, on_delete=models.CASCADE)
m2m_field = models.ManyToManyField(User, related_name="+")
class ConcreteChild(ChangedCondition):
child_field = models.CharField(max_length=16)
class AbstractChangedCondition(models.Model):
"""
For testing changed conditions
"""
field = models.CharField(max_length=16)
int_field = models.IntegerField(default=0)
dt_field = models.DateTimeField(auto_now=True)
nullable = models.CharField(null=True, default=None, max_length=16)
fk_field = models.ForeignKey("auth.User", null=True, on_delete=models.CASCADE)
char_pk_fk_field = models.ForeignKey(CharPk, null=True, on_delete=models.CASCADE)
m2m_field = models.ManyToManyField(User, related_name="+")
class Meta:
abstract = True
class AbstractChild(AbstractChangedCondition):
child_field = models.CharField(max_length=16)
|
