Inactive Days

[imcodingideas]

Describe the solution you'd like

On the repo https://github.com/freeCodeCamp/classroom-mode we are scraping Free Code Camp for the users inactive days, so I would like to query a user and see a timestamp of the last submission.

[ojongerius]

Sounds completely reasonable to me.

[ojongerius]

How we approach this would be related to the solution agreed on in #181

• Without storing of solutions, add lastSubmission to the user model, and have responsible functions set/update the timestamp.
• If we do keep on storing solutions, well it depends on the implementation chosen 😄

[ojongerius]

(blocked on discussion in #181)