Rails on Rails (Rails 4) - Template is missing

Rails on Rails (Rails 4) - Template is missing
Try with this

def create
   @response = Response.new(response_params)
    respond_to do |format|
      if @result = @response.save
        format.html
        format.js { render 'create.js.erb' }
       else
        format.html { render :action => "new" }
        format.js
       end
     end
   end