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Fixed #21783: (again) Found second source of bug, also squashed it.

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This commit is contained in:
Andrew Godwin 2014-01-19 17:42:29 +00:00
parent e8d4aed3b9
commit af4a8478e4
2 changed files with 17 additions and 1 deletions
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10
django/db/migrations/operations/fields.py
View File

@ -27,7 +27,15 @@ class AddField(Operation):
from_model = from_state.render().get_model(app_label, self.model_name)
to_model = to_state.render().get_model(app_label, self.model_name)
if router.allow_migrate(schema_editor.connection.alias, to_model):
schema_editor.add_field(from_model, to_model._meta.get_field_by_name(self.name)[0])
field = to_model._meta.get_field_by_name(self.name)[0]
if not self.preserve_default:
field.default = self.field.default
schema_editor.add_field(
from_model,
field,
)
if not self.preserve_default:
field.default = NOT_PROVIDED
def database_backwards(self, app_label, schema_editor, from_state, to_state):
from_model = from_state.render().get_model(app_label, self.model_name)

8
tests/migrations/test_operations.py
View File

@ -184,6 +184,14 @@ class OperationTests(MigrationTestBase):
if n == "height"
][0]
self.assertEqual(field.default, NOT_PROVIDED)
# Test the database alteration
project_state.render().get_model("test_adflpd", "pony").objects.create(
weight = 4,
)
self.assertColumnNotExists("test_adflpd_pony", "height")
with connection.schema_editor() as editor:
operation.database_forwards("test_adflpd", editor, project_state, new_state)
self.assertColumnExists("test_adflpd_pony", "height")
def test_add_field_m2m(self):
"""