rails ajax call redirect to invalid path

Question

This is my ajax call

$.ajax({
    type: "GET",
    url: '/posts/product_list.json',
    data: {sub_cat_id: parseNumber(sub_category_id)},
    dataType: 'json',
    success: function(data) {
        //$('#selection').show();
        $('#selection').html(data.html);
    },
    error: function(data){
    }
});

I have the post_list controller

respond_to :json,only: :product_list
      def product_list
        @products = Product.where(sub_category_id: params[:sub_cat_id])
        ##blah blah blah
      end

My url is showing like this while inspecting product_list.json?sub_cat_id=5

But the debugger is showing request parameter as follows

{"sub_cat_id"=>"5", "action"=>"show", "controller"=>"posts", "id"=>"product_list", "format"=>"json"}

I am very much confused why this is happening can any one clear it.

Answer 1

It appears you don't have a corresponding route entry. You should have something like this in your routes.rb:

resources :posts do
  get :product_list, on: :collection
end

If you only specify resources :posts, your GET request would match the one for GET /posts/:id (look at the output of rake routes), i.e. show action of PostsController with product_list parsed as the id parameter in the request URI. get :product_list defined after those 7 entries would make the router match the URI to the corresponding action and controller.