JirasController.rb

class JirasController < ApplicationController
 def generate_work_log
  ...
  fields.each_with_index do |field,index|
  
   progress = field.index
   WebsocketRails[:admin_channel].trigger :event_name, progress
            
  end
 end
end

view.html.erb

<script>
	jira = {}
	var dispatcher = new WebSocketRails('localhost:3000/websocket');
	
	dispatcher.bind('event_name', function(data) {
	 	console.log(data.message) // would output 'this is a message'
	});
</script>