app/django/middleware/transaction.py
author Lennard de Rijk <ljvderijk@gmail.com>
Sun, 08 Feb 2009 23:55:44 +0000
changeset 1255 9fe8c6c54933
parent 54 03e267d67478
permissions -rw-r--r--
Redone the listing in group_app.py. There is now a list_self that only shows the group application of the current user in the given a scope. The redirects point to edit or applicant when necessary. Review_overview will show all the group applications that can be reviewed in the given scope, the redirect points to review for all statusses. And list will just show all the group applications and redirect you to edit. Patch by: Lennard de Rijk 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