From 32063fe003bc590c83ce7f6997f9d5148d74ed4b Mon Sep 17 00:00:00 2001
From: Usman Khalid <2200617@gmail.com>
Date: Wed, 24 Sep 2014 19:18:37 +0500
Subject: [PATCH] Added commit_on_success_with_read_committed decorator to
 views which raise IntegrityErrors.

TNL-367
---
 common/djangoapps/course_modes/views.py | 2 ++
 common/djangoapps/student/views.py      | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/common/djangoapps/course_modes/views.py b/common/djangoapps/course_modes/views.py
index 79e12a452e..839ec01f94 100644
--- a/common/djangoapps/course_modes/views.py
+++ b/common/djangoapps/course_modes/views.py
@@ -17,6 +17,7 @@ from course_modes.models import CourseMode
 from courseware.access import has_access
 from student.models import CourseEnrollment
 from opaque_keys.edx.locations import SlashSeparatedCourseKey
+from util.db import commit_on_success_with_read_committed
 from xmodule.modulestore.django import modulestore
 
 
@@ -121,6 +122,7 @@ class ChooseModeView(View):
         return render_to_response("course_modes/choose.html", context)
 
     @method_decorator(login_required)
+    @method_decorator(commit_on_success_with_read_committed)
     def post(self, request, course_id):
         """Takes the form submission from the page and parses it.
 
diff --git a/common/djangoapps/student/views.py b/common/djangoapps/student/views.py
index 98de22096a..62c36ea3dc 100644
--- a/common/djangoapps/student/views.py
+++ b/common/djangoapps/student/views.py
@@ -78,6 +78,7 @@ import track.views
 
 from dogapi import dog_stats_api
 
+from util.db import commit_on_success_with_read_committed
 from util.json_request import JsonResponse
 from util.bad_request_rate_limiter import BadRequestRateLimiter
 
@@ -615,6 +616,7 @@ def try_change_enrollment(request):
 
 
 @require_POST
+@commit_on_success_with_read_committed
 def change_enrollment(request, auto_register=False, check_access=True):
     """
     Modify the enrollment status for the logged-in user.