def create_historical_record(self, instance, type):
manager = getattr(instance, self.manager_name)
attrs = {}
for field in instance._meta.fields:
attrs[field.attname] = getattr(instance, field.attname)
manager.create(history_type=type, **attrs)
def create_historical_record(self, instance, editor, type):
manager = getattr(instance, self.manager_name)
attrs = {}
for field in self.get_important_fields(instance):
'''
Detect a condition where a cascading delete causes an integrity
error because the post_delete trigger tries to create a
reference to a now-deleted instance in its history record. This
should only be an issue on PRESERVEd foreign keys, since CONVERTed
ones won't have an explicit reference.
Raise a specific exception when the condition is detected, allowing
post_delete to ignore historical record creation in this case.
'''
if isinstance(field, models.ForeignKey):
conversion = self.key_conversions.get(field.name, CONVERT)
if conversion == PRESERVE:
try:
# dereference key to make sure it exists
getattr(instance, field.name)
except field.rel.to.DoesNotExist as e:
raise HistoricalIntegrityError(e)
# copy field values normally
attrs[field.attname] = getattr(instance, field.attname)
manager.create(history_type=type, history_editor=editor, **attrs)
def create_historical_record(self, instance, type):
manager = getattr(instance, self.manager_name)
attrs = {}
for field in instance._meta.fields:
attrs[field.attname] = getattr(instance, field.attname)
manager.create(history_type=type, **attrs)
def create_historical_record(self, instance, editor, type):
manager = getattr(instance, self.manager_name)
attrs = {}
for field in self.get_important_field_names(instance):
attrs[field] = getattr(instance, field)
manager.create(history_type=type, history_editor=editor, **attrs)