Merge branch 'issue_24815' into 'master'

fix ERR_CONTENT_LENGTH_MISMATCH on task checkboxes

See merge request !8567

1 files changed, 17 insertions, 0 deletions

diff --git a/app/controllers/concerns/issuable_actions.rb b/app/controllers/concerns/issuable_actions.rb
index 0821974aa93..3ccf2a9ce33 100644
--- a/app/controllers/concerns/issuable_actions.rb
+++ b/app/controllers/concerns/issuable_actions.rb
@@ -26,6 +26,23 @@ module IssuableActions
 
   private
 
+  def render_conflict_response
+    respond_to do |format|
+      format.html do
+        @conflict = true
+        render :edit
+      end
+
+      format.json do
+        render json: {
+          errors: [
+            "Someone edited this #{issuable.human_class_name} at the same time you did. Please refresh your browser and make sure your changes will not unintentionally remove theirs."
+          ]
+        }, status: 409
+      end
+    end
+  end
+
   def labels
     @labels ||= LabelsFinder.new(current_user, project_id: @project.id).execute
   end