28 lines
1.1 KiB
Python
28 lines
1.1 KiB
Python
from django.db import transaction
|
|
|
|
class TransactionMiddleware(object):
|
|
"""
|
|
Transaction middleware. If this is enabled, each view function will be run
|
|
with commit_on_response activated - that way a save() doesn't do a direct
|
|
commit, the commit is done when a successful response is created. If an
|
|
exception happens, the database is rolled back.
|
|
"""
|
|
def process_request(self, request):
|
|
"""Enters transaction management"""
|
|
transaction.enter_transaction_management()
|
|
transaction.managed(True)
|
|
|
|
def process_exception(self, request, exception):
|
|
"""Rolls back the database and leaves transaction management"""
|
|
if transaction.is_dirty():
|
|
transaction.rollback()
|
|
transaction.leave_transaction_management()
|
|
|
|
def process_response(self, request, response):
|
|
"""Commits and leaves transaction management."""
|
|
if transaction.is_managed():
|
|
if transaction.is_dirty():
|
|
transaction.commit()
|
|
transaction.leave_transaction_management()
|
|
return response
|