gistfile1.rb

class ChatsController < ApplicationController	

def index
	@chats = Chat.order("created_at DESC")
end

def new
	@chat = Chat.new
end

def create
	session_properties = {OpenTok::SessionPropertyConstants::P2P_PREFERENCE => "enabled"}
	session = OTSDK.create_session nil, session_properties
	session_id = session.session_id
	
	@chat = Chat.new(chat_params)

	if @chat.save
		redirect_to @chat
	else
		format.html { render :controller => 'chats', :action => "index" }
	end
end

def party
	@chat = Chat.find(params[:id])
	@session_id = @chat.sessionId
end

def show
	@chat = Chat.find(params[:id])
end

private
	def chat_params
    	params.require(:chat).permit(:sessionId,:user_id,:token)
  	end

end


initializers/opentok.rb

# Creating an OpenTok Object
API_KEY = ENV['opentok_api_key']     # replace with your OpenTok API key
API_SECRET = ENV['opentok_secret_key']  # replace with your OpenTok API secret
OTSDK = OpenTok::OpenTokSDK.new API_KEY, API_SECRET

new.html.erb
		<%= form_for(@chat) do |f| %>
			<%= f.hidden_field sessionId: sessionId %>
			<%= f.hidden_field token: token %>
		<%= f.submit %>
		<% end %>
		
		
show.html.erb

 <div id="myPublisherDiv"></div>
        <script type="text/javascript">
          // Initialize API key, session, and token...
          // Think of a session as a room, and a token as the key to get in to the room
          // Sessions and tokens are generated on your server and passed down to the client
          var apiKey = "44745342";
          var sessionId = <%= @chat.sessionId %>;
          var token = <%= @chat.token %>;

          // Initialize session, set up event listeners, and connect
          var session = TB.initSession(sessionId);
          session.addEventListener('sessionConnected', sessionConnectedHandler);
          session.connect(apiKey, token);
          
          function sessionConnectedHandler(event) {
            var publisher = TB.initPublisher(apiKey, 'myPublisherDiv');
            session.publish(publisher);
          }
        </script>