Merge branch 'close-issues-by-mr' into 'master'

Close issues mentioned in MR description when MR is merged using
fast-forward merge or when merge commit message is edited.

Fixes gitlab-org/gitlab-ee#48.

See merge request !1639

1 files changed, 10 insertions, 0 deletions

diff --git a/app/services/merge_requests/post_merge_service.rb b/app/services/merge_requests/post_merge_service.rb
index aceb8cb9021..8f25c5e2496 100644
--- a/app/services/merge_requests/post_merge_service.rb
+++ b/app/services/merge_requests/post_merge_service.rb
@@ -6,6 +6,7 @@ module MergeRequests
   #
   class PostMergeService < MergeRequests::BaseService
     def execute(merge_request)
+      close_issues(merge_request)
       merge_request.mark_as_merged
       create_merge_event(merge_request, current_user)
       create_note(merge_request)
@@ -15,6 +16,15 @@ module MergeRequests
 
     private
 
+    def close_issues(merge_request)
+      return unless merge_request.target_branch == project.default_branch
+
+      closed_issues = merge_request.closes_issues(current_user)
+      closed_issues.each do |issue|
+        Issues::CloseService.new(project, current_user, {}).execute(issue, merge_request)
+      end
+    end
+
     def create_merge_event(merge_request, current_user)
       EventCreateService.new.merge_mr(merge_request, current_user)
     end