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Fixed #21968: Bad detection of old-style apps to add initial migration

This commit is contained in:
Andrew Godwin 2014-02-09 11:41:44 +00:00
parent 75a96f06e9
commit 2085f53f56
2 changed files with 30 additions and 23 deletions
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2
django/core/management/commands/makemigrations.py
View File

@ -47,7 +47,9 @@ class Command(BaseCommand):
# Load the current graph state. Takes a connection, but it's not used
# (makemigrations doesn't look at the database state).
# Also make sure the graph is built without unmigrated apps shoehorned in.
loader = MigrationLoader(connections[DEFAULT_DB_ALIAS])
loader.build_graph(ignore_unmigrated=True)
# Before anything else, see if there's conflicting apps and drop out
# hard if there are any and they don't want to merge

51
django/db/migrations/loader.py
View File

@ -135,7 +135,7 @@ class MigrationLoader(object):
else:
return self.disk_migrations[results[0]]
def build_graph(self):
def build_graph(self, ignore_unmigrated=False):
"""
Builds a migration dependency graph using both the disk and database.
You'll need to rebuild the graph if you apply migrations. This isn't
@ -200,33 +200,38 @@ class MigrationLoader(object):
# even have migrations.
if parent[1] == "__first__" and parent not in self.graph:
if parent[0] in self.unmigrated_apps:
# This app isn't migrated, but something depends on it.
# We'll add a fake initial migration for it into the
# graph.
app_config = apps.get_app_config(parent[0])
ops = []
for model in app_config.get_models():
model_state = ModelState.from_model(model)
ops.append(
operations.CreateModel(
name=model_state.name,
fields=model_state.fields,
options=model_state.options,
bases=model_state.bases,
if ignore_unmigrated:
migration.dependencies.remove(parent)
parent = None
else:
# This app isn't migrated, but something depends on it.
# We'll add a fake initial migration for it into the
# graph.
app_config = apps.get_app_config(parent[0])
ops = []
for model in app_config.get_models():
model_state = ModelState.from_model(model)
ops.append(
operations.CreateModel(
name=model_state.name,
fields=model_state.fields,
options=model_state.options,
bases=model_state.bases,
)
)
)
new_migration = type(
"FakeInitialMigration",
(Migration, ),
{"operations": ops},
)(parent[1], parent[0])
self.graph.add_node(parent, new_migration)
self.applied_migrations.add(parent)
new_migration = type(
"FakeInitialMigration",
(Migration, ),
{"operations": ops},
)(parent[1], parent[0])
self.graph.add_node(parent, new_migration)
self.applied_migrations.add(parent)
elif parent[0] in self.migrated_apps:
parent = list(self.graph.root_nodes(parent[0]))[0]
else:
raise ValueError("Dependency on unknown app %s" % parent[0])
self.graph.add_dependency(key, parent)
if parent is not None:
self.graph.add_dependency(key, parent)
def detect_conflicts(self):
"""