def check_model_schema(sender, instance, **kwargs):
"""
Check that the schema being used is the most up-to-date.
Called on pre_save to guard against the possibility of a model schema change
between instance instantiation and record save.
"""
if not is_current_model(sender):
raise OutdatedModelError(f"model {sender.__name__} has changed")
def test_is_current_model(self, model_schema):
model = model_schema.as_model()
assert utils.is_current_model(model)
cache.update_last_modified(model_schema.model_name)
assert not utils.is_current_model(model)
def get_model(self):
registered = self.get_registered_model()
if registered and is_current_model(registered):
return registered
return self.make_model()
def test_related_model_schema_notified_on_field_update(
self, model_schema, field_schema):
model = model_schema.as_model()
assert utils.is_current_model(model)
field_schema.update_last_modified()
assert not utils.is_current_model(model)