Elements of AI app fails to load certification status

[m4rku55]

quiznator/server/api/v1/course-state/index.js

Line 7 in 8928adc

router.post('/state/:courseid',

Is the /state/elements-of-ai endpoint working as intended? When I checked the request using developer toolbar, the body of response is empty which consequently crashes the parsing of request. The corresponding fix to client is here: https://github.com/rage/elements-of-ai-material/compare/features/course-state-fix?expand=1

Why the request is POST instead of GET if the endpoint is used for fetching the data from server? POST request should be used only when creating a new resource and when the id is not known: http://restcookbook.com/HTTP%20Methods/put-vs-post/

@tulir @mipyykko @nygrenh

[m4rku55]

According to Slack discussion nothing (null?) is returned if state doesn't exist, so it's working as intended

[m4rku55]

Empty response is returned if progress is 0% (no questions answered)