moves tag_cloud logic to a model

app/controllers/concerns/commentable_actions.rb

@@ -73,7 +73,7 @@ module CommentableActions
     end
 
     def tag_cloud
-      resource_model.last_week.tag_counts.order("#{resource_name.pluralize}_count": :desc, name: :asc).limit(5)
+      TagCloud.new(resource_model).tags
     end
 
     def load_geozones

app/models/tag_cloud.rb

@@ -0,0 +1,13 @@
+class TagCloud
+
+  attr_accessor :resource_model
+
+  def initialize(resource_model)
+    @resource_model = resource_model
+  end
+
+  def tags
+    resource_model.last_week.tag_counts.order("#{resource_model.to_s.downcase.pluralize}_count": :desc, name: :asc).limit(5)
+  end
+
+end