Redmine

Currently, filtering issues by multiple tracker ids is possible with analyzing issues query filter.

• http://localhost:3000/issues?f%5B%5D=tracker_id&op%5Btracker_id%5D=%3D&v%5Btracker_id%5D%5B%5D=1&v%5Btracker_id%5D%5B%5D=2&v%5Btracker_id%5D%5B%5D=3

But building above URL path is not strait forward, and it's preferable to support like the following understandable parameter.

• http://localhost:3000/issues.json?tracker_id=1,2,3
• (On current trunk, this request returns 500 Internal Server Error)

Attached patch file enables above simple and understandable multiple tracker ids filter issues request.

Note that this patch was made by @rbt, @tohosaku, @mbasa and me from Redmine patch meetup 14th.