Siguiente: Práctica: Chat con Mensajes Subir: Comet y Server Sent-Events Anterior: Código Completo del Chat Índice General Índice de Materias
[~/sinatra-streaming/blazeeboychat(master)]$ pwd -P /Users/casiano/local/src/ruby/sinatra/sinatra-streaming/blazeeboychat [~/sinatra-streaming/blazeeboychat(master)]$ git remote -v origin git@github.com:crguezl/chat-blazee.git (fetch) origin git@github.com:crguezl/chat-blazee.git (push)
[~/sinatra-streaming/blazeeboychat(master)]$ cat chat.rb
require 'sinatra' # gem install sinatra --no-rdoc --no-ri
set :port, 3000
set :environment, :production
html = <<-EOT
<html><head><style>
#text{width:100%; font-size: 15px; padding: 5px; display: block;}
</style></head><body>
<input id="text" placeholder="Write then press Enter."/>
<div id="chat"></div>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script>
$('#text').keypress(function(e){
if( e.keyCode==13 ){
$.get('/send',{text:$('#text').val()});
$('#text').val('');
}
});
last = 0;
setInterval(function(){
$.get('/update',{last:last},
function(response){
last = $('<p>').html(response).find('span').data('last');
$('#chat').append(response);
});
},1000);
</script>
</body></html>
EOT
chat = ['welcome..']
get('/') { html }
get '/send' do
chat << "#{request.ip} : #{params['text']}"
nil
end
get '/update' do
updates = chat[params['last'].to_i..-1]
last = "<span data-last=\"#{chat.size}\"></span>"
if updates.size>0
updates.join('</br>') + "#{last}</br>"
else
last
end
end