BUG: clicking on notification link after adding a track leads to /u/undefined

[adrienjoly]

=> failing acceptance test:

"adding a track -- should show the post on the user's profile after clicking the link"

hypothesis:

• could be caused by a failure in the models/track.js file that mutates the post object (supposed to contain the uId property)
• could be caused by failure in the models/algoliaSearch.js file that mutates the post object (supposed to contain the uId property)

[adrienjoly]

problem found and fixed in commit c6e001b.

it was caused by a breaking change in mongodb driver’s returned object (cf migration to mongodb driver v2, #54): the saved data object is now stored as the first element of a ops array property, instead of being returned directly. (see my comment on mongodb driver's upgrade guide)

=> all calls to insert(), update() and save() should be checked and fixed, after adding failing acceptance tests for the corresponding user actions. => #62