1 files changed, 22 insertions, 0 deletions
diff --git a/app/controllers/projects/merge_requests/content_controller.rb b/app/controllers/projects/merge_requests/content_controller.rb
new file mode 100644
index 00000000000..6e026b83ee3
--- /dev/null
+++ b/app/controllers/projects/merge_requests/content_controller.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class Projects::MergeRequests::ContentController < Projects::MergeRequests::ApplicationController
+  # @merge_request.check_mergeability is not executed here since
+  # widget serializer calls it via mergeable? method
+  # but we might want to call @merge_request.check_mergeability
+  # for other types of serialization
+
+  before_action :close_merge_request_if_no_source_project
+  around_action :allow_gitaly_ref_name_caching
+
+  def widget
+    respond_to do |format|
+      format.json do
+        Gitlab::PollingInterval.set_header(response, interval: 10_000)
+
+        serializer = MergeRequestSerializer.new(current_user: current_user, project: merge_request.project)
+        render json: serializer.represent(merge_request, serializer: 'widget')
+      end
+    end
+  end
+end