Post creation date is forced at the data repository level but it should be done on the API controller

[tuxpiper]

Currently we've got this line of code

https://github.com/ushahidi/platform/blob/d6c575f/src/App/Repository/PostRepository.php#L1177

forcing the post creation date at the model/repository level, whenever we create a post in the database. This is generally reasonable behavior, but it doesn't work well when we are doing i.e. data import using our repository classes. This sort of thing rather belongs at the API level.

Setting the creation date at the model/repository level still needs to happen, but only if no date has been set for the Post entity.

---

On our v5 branch, this is already being done at the HTTP controller level:

https://github.com/ushahidi/platform/blob/f9e2fdf/v5/Http/Controllers/PostController.php#L113

but are we setting a proper default at the model level? Couldn't find anything explicit here:

https://github.com/ushahidi/platform/blob/f9e2fdf901d10939899a67b1c35ff2633fb47a98/v5/Models/Post.php

Could you please confirm this @rowasc?

Aha! Link: https://ushahiditeam.aha.io/features/PROD-788

[tuxpiper]

For the moment, targeting this as a fix to roll with the v2->v3 import tool (#3418)