Rails SSE controller

browser_controller.rb

require 'sse'

class BrowserController < ApplicationController
	include ActionController::Live

	def index
		# SSE expects the `text/event-stream` content type
		response.headers['Content-Type'] = 'text/event-stream'

		sse = Reloader::SSE.new(response.stream)
		begin
			loop do
			@count = Pledge.count
			sse.write({ :time => Time.now, :count => @count}, :event => 'refresh')
			sleep 1
			end
		rescue IOError
		  # When the client disconnects, we'll get an IOError on write
		ensure
			sse.close
		end
	end
end