can update co-author relation

app/controllers/desktop/co_author_relations_controller.rb

@@ -10,6 +10,9 @@ class Desktop::CoAuthorRelationsController < ApplicationController
 
   def edit
     @co_author_relation = CoAuthorRelation.find(params[:id])
+    respond_to do |format|
+      format.html { render :layout => false}
+    end
   end
 
   def new