def _update_model(tran, model):
if model.collection_name() not in tran['update']:
tran['update'][model.collection_name()] = []
tran['update'][model.collection_name()].append(model)
def _delete_model(tran, model):
if model.collection not in tran['del']:
tran['del'][model.collection_name()] = []
tran['del'][model.collection_name()].append(model.id)
def _insert_model(tran, model):
if model.collection_name() not in tran['new']:
tran['new'][model.collection_name()] = []
tran['new'][model.collection_name()].append(model)