POC: Websockets für Projektseminar

application.js.coffee

//= require jquery
//= require jquery_ujs
//= require turbolinks
//= require websocket_rails/main
//= require_tree .

$ ->
  dispatcher = new WebSocketRails('localhost:3000/websocket')

  dispatcher.bind('new_message', (data) ->
   $('body').append("<p>"+data.message+"</p>")
  )

  $('#send').on('click', ->
    dispatcher.trigger('new_message', {data: $('#my-message').val()})
  )

events.rb

WebsocketRails::EventMap.describe do
  # You can use this file to map incoming events to controller actions.
  # One event can be mapped to any number of controller actions. The
  # actions will be executed in the order they were subscribed.
  #
  # Uncomment and edit the next line to handle the client connected event:
  subscribe :new_message, :to => MessagesController, :with_method => :new_message
  #
  # Here is an example of mapping namespaced events:
  #   namespace :product do
  #     subscribe :new, :to => ProductController, :with_method => :new_product
  #   end
  # The above will handle an event triggered on the client like `product.new`.
end

Gemfile

#....
gem 'websocket-rails'

gem 'thin'

#...

index.html.erb

<h1> My Chat</h1>
<input type="text" name="fname" id="my-message">
<a href="javascript:void(0)" id="send"> send </a>

messages_controller.rb

class MessagesController < WebsocketRails::BaseController

  def new_message
    broadcast_message 'new_message', {message:  message}
  end

end