pfwb/sendmail: use Django 1.6 atomic() decorator if available revert on commit_on_success() otherwise

docbow_project/pfwb/management/commands/sendmail.py

@@ -11,7 +11,6 @@ import urllib2
 from django.core.management.base import BaseCommand
 import django.contrib.auth.models as auth_models
 from django.core.files.base import ContentFile
-from django.db import transaction
 from django.core.exceptions import MultipleObjectsReturned
 from django.utils.timezone import utc, make_aware
 from django.template.defaultfilters import slugify
@@ -19,6 +18,10 @@ from django.template.defaultfilters import slugify
 from docbow_project.docbow import models, timestamp, utils
 from docbow_project.docbow.email_utils import u2u_decode
 from django_journal import record
+try:
+    from django.db.transaction import atomic
+except ImportError:
+    from django.db.transaction import commit_on_success
 
 from ... import app_settings
 
@@ -96,7 +99,7 @@ In case of failure the following return value is returned:
             return None
         return self.mailing_lists.get(username[len('liste-'):])
 
-    @transaction.commit_on_success
+    @atomic
     def handle_mail(self, mail, mail_recipients, **options):
         content_errors = []
         attachments = []