Ruby on Rails

Suppose you have a controller HomeController. It should look like below.

home_controller.rb

class HomeController < ApplicationController    # GET /show_message    def show_message      format.js { render js: "alert('simple output');" }    end  end  

and in your routs.rb file add this line

get '/show_message', 'home#show_message', as: :show_message  

and in your view add this line

<%= link_to "Print", show_message_path, remote: true %>  

After this when you click on Print link, and AJAX request will be sent to HomeController'sshow_message action and it will display a javascript alert.

For better understanding of AJAX requests in Rails, follow this tutorial - http://www.tutorialspoint.com/ruby-on-rails/rails-and-ajax.htm :)

Kashif Umair Liaqat wrote in post #1125837:
> You cannot call Ruby code directly from client side. You have to send an
> AJAX request to some controller for this purpose.

How would I do that? I have no knowledge of AJAX

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