使用respond_to do | format |时ActionController :: UnknownFormat

Question

I am using jquery slider ui and rails 4. I am trying to implement a price slider for my product page. However, i have run into a problem. I have tried to search around but i cant seems to find a solution that helps. Hope someone could help me as I am quite new to ruby on rails. Thanks.

Here are my code

products_controller.rb

 respond_to do |format|
  format.js do
    render :update do |page|
      page.replace_html 'x_product_list', :partial => 'products/products_list', :locals => { :product => @product }

with this error:

ActionController::UnknownFormat

Answer 1

Try updating adding JS to config/initializers/mime_types.rb , so rails knows how to deal with it.

Mime::Type.register "application/javascript", :js

Be sure to restart your app after editing that file.