diff options
Diffstat (limited to 'django/db/backends/sqlite3/schema.py')
| -rw-r--r-- | django/db/backends/sqlite3/schema.py | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/django/db/backends/sqlite3/schema.py b/django/db/backends/sqlite3/schema.py index e0d8135cbd..0954c66aaf 100644 --- a/django/db/backends/sqlite3/schema.py +++ b/django/db/backends/sqlite3/schema.py @@ -19,8 +19,15 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor): def __enter__(self): # Some SQLite schema alterations need foreign key constraints to be - # disabled. Enforce it here for the duration of the transaction. - self.connection.disable_constraint_checking() + # disabled. Enforce it here for the duration of the schema edition. + if not self.connection.disable_constraint_checking(): + raise NotSupportedError( + 'SQLite schema editor cannot be used while foreign key ' + 'constraint checks are enabled. Make sure to disable them ' + 'before entering a transaction.atomic() context because ' + 'SQLite3 does not support disabling them in the middle of ' + 'a multi-statement transaction.' + ) self.connection.cursor().execute('PRAGMA legacy_alter_table = ON') return super().__enter__() |