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Code Issues 27 Releases Wiki Activity

[1.7.x] Fixed #22359 -- Changing M2M field to blank=True failed on sqlite.

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Backport of a449e7feec from master
This commit is contained in:
Loic Bistuer 2014-03-31 13:09:12 +07:00 committed by Tim Graham
parent 422f5d9a2c
commit bdec848063
2 changed files with 31 additions and 9 deletions
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2
django/db/backends/sqlite3/schema.py
View File

@ -161,7 +161,7 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
"""
Alters M2Ms to repoint their to= endpoints.
"""
if old_field.rel.through == new_field.rel.through:
if old_field.rel.through._meta.db_table == new_field.rel.through._meta.db_table:
return
# Make a new through table

38
tests/migrations/test_operations.py
View File

@ -14,6 +14,17 @@ class OperationTests(MigrationTestBase):
both forwards and backwards.
"""
def apply_operations(self, app_label, project_state, operations):
new_state = project_state.clone()
for operation in operations:
operation.state_forwards(app_label, new_state)
# Set up the database
with connection.schema_editor() as editor:
for operation in operations:
operation.database_forwards(app_label, editor, project_state, new_state)
return new_state
def set_up_test_model(self, app_label, second_model=False, related_model=False, mti_model=False):
"""
Creates a test model state and database table.
@ -67,14 +78,8 @@ class OperationTests(MigrationTestBase):
],
bases=['%s.Pony' % app_label],
))
project_state = ProjectState()
for operation in operations:
operation.state_forwards(app_label, project_state)
# Set up the database
with connection.schema_editor() as editor:
for operation in operations:
operation.database_forwards(app_label, editor, ProjectState(), project_state)
return project_state
return self.apply_operations(app_label, ProjectState(), operations)
def test_create_model(self):
"""
@ -374,6 +379,23 @@ class OperationTests(MigrationTestBase):
operation.database_backwards("test_adflmm", editor, new_state, project_state)
self.assertTableNotExists("test_adflmm_pony_stables")
def test_alter_field_m2m(self):
project_state = self.set_up_test_model("test_alflmm", second_model=True)
project_state = self.apply_operations("test_alflmm", project_state, operations=[
migrations.AddField("Pony", "stables", models.ManyToManyField("Stable", related_name="ponies"))
])
new_apps = project_state.render()
Pony = new_apps.get_model("test_alflmm", "Pony")
self.assertFalse(Pony._meta.get_field('stables').blank)
project_state = self.apply_operations("test_alflmm", project_state, operations=[
migrations.AlterField("Pony", "stables", models.ManyToManyField(to="Stable", related_name="ponies", blank=True))
])
new_apps = project_state.render()
Pony = new_apps.get_model("test_alflmm", "Pony")
self.assertTrue(Pony._meta.get_field('stables').blank)
def test_remove_field(self):
"""
Tests the RemoveField operation.