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Code Issues 32 Releases Wiki Activity

Fix altering of SERIAL columns and InnoDB being picky about FK changes

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This commit is contained in:
Andrew Godwin
2013-12-11 14:19:05 +00:00
parent cee4fe7307
commit 5db028affb
5 changed files with 173 additions and 17 deletions
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12
django/db/migrations/operations/fields.py
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@@ -24,9 +24,10 @@ class AddField(Operation):
state.models[app_label, self.model_name.lower()].fields.append((self.name, field))
def database_forwards(self, app_label, schema_editor, from_state, to_state):
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(to_model, to_model._meta.get_field_by_name(self.name)[0])
schema_editor.add_field(from_model, to_model._meta.get_field_by_name(self.name)[0])
def database_backwards(self, app_label, schema_editor, from_state, to_state):
from_model = from_state.render().get_model(app_label, self.model_name)
@@ -73,9 +74,10 @@ class RemoveField(Operation):
schema_editor.remove_field(from_model, from_model._meta.get_field_by_name(self.name)[0])
def database_backwards(self, app_label, schema_editor, from_state, to_state):
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(to_model, to_model._meta.get_field_by_name(self.name)[0])
schema_editor.add_field(from_model, to_model._meta.get_field_by_name(self.name)[0])
def describe(self):
return "Remove field %s from %s" % (self.name, self.model_name)
@@ -107,7 +109,7 @@ class AlterField(Operation):
to_model = to_state.render().get_model(app_label, self.model_name)
if router.allow_migrate(schema_editor.connection.alias, to_model):
schema_editor.alter_field(
to_model,
from_model,
from_model._meta.get_field_by_name(self.name)[0],
to_model._meta.get_field_by_name(self.name)[0],
)
@@ -153,7 +155,7 @@ class RenameField(Operation):
to_model = to_state.render().get_model(app_label, self.model_name)
if router.allow_migrate(schema_editor.connection.alias, to_model):
schema_editor.alter_field(
to_model,
from_model,
from_model._meta.get_field_by_name(self.old_name)[0],
to_model._meta.get_field_by_name(self.new_name)[0],
)
@@ -163,7 +165,7 @@ class RenameField(Operation):
to_model = to_state.render().get_model(app_label, self.model_name)
if router.allow_migrate(schema_editor.connection.alias, to_model):
schema_editor.alter_field(
to_model,
from_model,
from_model._meta.get_field_by_name(self.new_name)[0],
to_model._meta.get_field_by_name(self.old_name)[0],
)