Link issues from comments and automatically close them

Any mention of Issues, MergeRequests, or Commits via GitLab-flavored markdown
references in descriptions, titles, or attached Notes creates a back-reference
Note that links to the original referencer. Furthermore, pushing commits with
commit messages that match a (configurable) regexp to a project's default
branch will close any issues mentioned by GFM in the matched closing phrase.
If accepting a merge request would close any Issues in this way, a banner is
appended to the merge request's main panel to indicate this.

1 files changed, 5 insertions, 0 deletions

diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb
index 235247f3e52..55d2c3f04fc 100644
--- a/app/controllers/projects/merge_requests_controller.rb
+++ b/app/controllers/projects/merge_requests_controller.rb
@@ -3,6 +3,7 @@ require 'gitlab/satellite/satellite'
 class Projects::MergeRequestsController < Projects::ApplicationController
   before_filter :module_enabled
   before_filter :merge_request, only: [:edit, :update, :show, :commits, :diffs, :automerge, :automerge_check, :ci_status]
+  before_filter :closes_issues, only: [:edit, :update, :show, :commits, :diffs]
   before_filter :validates_merge_request, only: [:show, :diffs]
   before_filter :define_show_vars, only: [:show, :diffs]
 
@@ -135,6 +136,10 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     @merge_request ||= @project.merge_requests.find_by_iid!(params[:id])
   end
 
+  def closes_issues
+    @closes_issues ||= @merge_request.closes_issues
+  end
+
   def authorize_modify_merge_request!
     return render_404 unless can?(current_user, :modify_merge_request, @merge_request)
   end