#46 Add Prometheus exporter

app/models/comment.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Comment < ApplicationRecord
   # inherit the creation module: encapsulates that this is a polymorphic user, offers some aliases and makes sure that all necessary attributes are set.
   include Creation
@@ -8,4 +10,12 @@ class Comment < ApplicationRecord
   belongs_to :file, class_name: 'CodeOcean::File'
   belongs_to :user, polymorphic: true
   # after_save :trigger_rfc_action_cable_from_comment
+
+  def request_for_comment
+    RequestForComment.find_by(submission_id: file.context.id)
+  end
+
+  def only_comment_for_rfc?
+    request_for_comment.comments.one?
+  end
 end