diff options
Diffstat (limited to 'django')
| -rw-r--r-- | django/db/migrations/operations/special.py | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/django/db/migrations/operations/special.py b/django/db/migrations/operations/special.py index 96fd2cc63c..00caa08684 100644 --- a/django/db/migrations/operations/special.py +++ b/django/db/migrations/operations/special.py @@ -61,6 +61,7 @@ class RunSQL(Operation): Also accepts a list of operations that represent the state change effected by this SQL change, in case it's custom column/table creation/deletion. """ + noop = '' def __init__(self, sql, reverse_sql=None, state_operations=None): self.sql = sql @@ -100,9 +101,9 @@ class RunSQL(Operation): def describe(self): return "Raw SQL operation" - def _run_sql(self, schema_editor, sql): - if isinstance(sql, (list, tuple)): - for sql in sql: + def _run_sql(self, schema_editor, sqls): + if isinstance(sqls, (list, tuple)): + for sql in sqls: params = None if isinstance(sql, (list, tuple)): elements = len(sql) @@ -111,8 +112,8 @@ class RunSQL(Operation): else: raise ValueError("Expected a 2-tuple but got %d" % elements) schema_editor.execute(sql, params=params) - else: - statements = schema_editor.connection.ops.prepare_sql_script(sql) + elif sqls != RunSQL.noop: + statements = schema_editor.connection.ops.prepare_sql_script(sqls) for statement in statements: schema_editor.execute(statement, params=None) @@ -175,3 +176,7 @@ class RunPython(Operation): def describe(self): return "Raw Python operation" + + @staticmethod + def noop(apps, schema_editor): + return None |