Various improvements to the generic View code
Among others:
* Added the 'page' argument to the simple.errorResponse call
* Pass the result of getEmptyKeyFields to edit() in create()
* Fix typo's in error responses
* Fixed a todo to properly redirect on create
* Made editPost return something when the form is not valid
* Added an _editGet hook
Patch by: Sverre Rabbelier
Reviewed by: to-be-reviewed
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