Bring from EE: Share Project with Group
- [x] Models and migrations
- [x] Logic, UI
- [x] Tests
- [x] Documentation
- [x] Share with group lock
- [x] Api feature
- [x] Api docs
- [x] Api tests
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
For #12831
cc @DouweM @rspeicher @vsizov
See merge request !3186
GitLab EE adds an extra relation that selects a "project_id" column
instead of an "id" column, making it very hard for this method to be
re-used in EE. Since using User#authorized_groups in
ProjectsFinder#all_groups apparently has no performance impact we can
just use it and keep everything compatible with EE.
These changes were added in GitLab EE commit
d39de0ea91b26b8840195e5674b92c353cc16661. The tests were a bit bugged
(they used a non existing group, thus not testing a crucial part) which
I only noticed when porting CE changes to EE.
This class now uses a UNION (when needed) instead of plucking tens of
thousands of project IDs into memory. The tests have also been
re-written to ensure all different use cases are tested properly
(assuming I didn't forget any cases).
The finder has also been broken up into 3 different finder classes:
* ContributedProjectsFinder: class for getting the projects a user
contributed to.
* PersonalProjectsFinder: class for getting the personal projects of a
user.
* ProjectsFinder: class for getting generic projects visible to a given
user.
Previously a lot of the logic of these finders was handled directly in
the users controller.
