{"action":"created","comment":{"url":"https://api.github.com/repos/edx/edx-platform/pulls/comments/39733798","id":39733798,"diff_hunk":"@@ -34,10 +37,20 @@ def to_native(self, course_overview):\n                 kwargs={'course_id': course_id},\n                 request=request\n             )\n+            try:\n+                get_discussion_course_or_404(CourseKey.from_string(course_id), request.user)","path":"lms/djangoapps/mobile_api/users/serializers.py","position":21,"original_position":21,"commit_id":"56b8b62f5a838a2a828014e1b5269183ce4beae0","original_commit_id":"3328ed445cb3dd6b263e58c2d0ef28e81d443ff1","user":{"login":"wajeeha-khalid","id":6745069,"avatar_url":"https://avatars.githubusercontent.com/u/6745069?v=3","gravatar_id":"","url":"https://api.github.com/users/wajeeha-khalid","html_url":"https://github.com/wajeeha-khalid","followers_url":"https://api.github.com/users/wajeeha-khalid/followers","following_url":"https://api.github.com/users/wajeeha-khalid/following{/other_user}","gists_url":"https://api.github.com/users/wajeeha-khalid/gists{/gist_id}","starred_url":"https://api.github.com/users/wajeeha-khalid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/wajeeha-khalid/subscriptions","organizations_url":"https://api.github.com/users/wajeeha-khalid/orgs","repos_url":"https://api.github.com/users/wajeeha-khalid/repos","events_url":"https://api.github.com/users/wajeeha-khalid/events{/privacy}","received_events_url":"https://api.github.com/users/wajeeha-khalid/received_events","type":"User","site_admin":false},"body":"@nasthagiri \r\nThe `CourseEnrollment` model creates `course_overview` property from its course `CourseOverview.get_from_id(self.course_id)` which in turns loads course_overview from cache and if not present then calls modulestore and creates `course_overview = cls._create_from_course(course)`\r\nBy looking at it; course_overview is being created from course and cashed. I was wondering, why did not we cache complete course and serialized course_overview from that course cashed object to improve performance?","created_at":"2015-09-17T11:08:28Z","updated_at":"2015-09-17T11:08:28Z","html_url":"https://github.com/edx/edx-platform/pull/9784#discussion_r39733798","pull_request_url":"https://api.github.com/repos/edx/edx-platform/pulls/9784","_links":{"self":{"href":"https://api.github.com/repos/edx/edx-platform/pulls/comments/39733798"},"html":{"href":"https://github.com/edx/edx-platform/pull/9784#discussion_r39733798"},"pull_request":{"href":"https://api.github.com/repos/edx/edx-platform/pulls/9784"}}},"pull_request":{"url":"https://api.github.com/repos/edx/edx-platform/pulls/9784","id":45158885,"html_url":"https://github.com/edx/edx-platform/pull/9784","diff_url":"https://github.com/edx/edx-platform/pull/9784.diff","patch_url":"https://github.com/edx/edx-platform/pull/9784.patch","issue_url":"https://api.github.com/repos/edx/edx-platform/issues/9784","number":9784,"state":"open","locked":false,"title":"MA-1248 - Mobile API: return discussion URL in course enrollment 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