2011-12-30 06:00:40 -05:00
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#!/usr/bin/env ruby -I ../lib -I lib
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# coding: utf-8
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require 'sinatra'
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set :server, 'thin'
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connections = []
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get '/' do
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halt erb(:login) unless params[:user]
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erb :chat, :locals => { :user => params[:user].gsub(/\W/, '') }
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end
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get '/stream', :provides => 'text/event-stream' do
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stream :keep_open do |out|
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connections << out
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out.callback { connections.delete(out) }
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end
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end
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post '/' do
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connections.each { |out| out << "data: #{params[:msg]}\n\n" }
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204 # response without entity body
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end
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__END__
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@@ layout
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<html>
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2012-07-18 15:07:24 -04:00
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<head>
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<title>Super Simple Chat with Sinatra</title>
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2011-12-30 06:00:40 -05:00
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<meta charset="utf-8" />
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2012-07-18 15:07:24 -04:00
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<script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
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</head>
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2011-12-30 06:00:40 -05:00
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<body><%= yield %></body>
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</html>
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@@ login
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<form action='/'>
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<label for='user'>User Name:</label>
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<input name='user' value='' />
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<input type='submit' value="GO!" />
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</form>
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@@ chat
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<pre id='chat'></pre>
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<script>
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// reading
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var es = new EventSource('/stream');
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es.onmessage = function(e) { $('#chat').append(e.data + "\n") };
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// writing
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$("form").live("submit", function(e) {
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$.post('/', {msg: "<%= user %>: " + $('#msg').val()});
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$('#msg').val(''); $('#msg').focus();
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e.preventDefault();
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});
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</script>
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<form>
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<input id='msg' placeholder='type message here...' />
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2012-07-18 15:07:24 -04:00
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</form>
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