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rails 3 two lines install Delicious Email

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   1  gem install i18n tzinfo builder memcache-client rack rack-test rack-mount erubis mail text-format thor bundler
   2  
   3  gem install rails --pre
created by leozera — 20 February 2010 — get a short url — tags: rails — embed

clean way to open a popup window Delicious Email

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   1  $('a.popup').live('click', function(){
   2  	newwindow=window.open($(this).attr('href'),'','height=200,width=150');
   3  	if (window.focus) {newwindow.focus()}
   4  	return false;
   5  });
created by leozera — 16 December 2009 — get a short url — tags: javascript jquery — embed

seletores do jquery Delicious Email

http://docs.jQuery.com/DOM/Traversing/Selectors

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   1  $('h1') // elementos h1
   2  $('#meuID') // elementos com id "meuID"
   3  $('.minhaClasse') // elementos definidos com a classe "minhaClasse"
   4  $('[width]') // elementos que possuem o atributo width definido
   5  $('[width=500]') // elementos que possuem o atributo width definido como 500
   6  $('img[width=300]') // imagens que possuem largura = 300
   7  $('img[src$=png]') // imagens com final png
   8  $('a[href^=http://localhost]') // links que comecem com http://localhost
   9  $('a[href$=pdf]') // links com final pdf
  10  $('a[href*=www]') // links que contém www
  11  $(':empty') // elementos vazio
  12  $('div:empty') // elementos div vazios
  13  $(':has(p)') // todos elementos que tenham um parágrafo
  14  $('div:has(a)'); // elementos div que possuem link
  15  $("p:contains('dinei')") // parágrafos que contém a palavra "dinei"
  16  $("p:eq(0)") // seleciona o primeiro elemento p
created by leozera — 25 November 2009 — get a short url — tags: javascript jquery — embed

i18n in labels Delicious Email

rails 2.3.4 doen’t have i18n support in labels
http://lawrencesong.net/2009/04/i18n-label-in-rails-monkey-patch/

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   1  module ActionView 
   2    module Helpers 
   3      class InstanceTag 
   4        def to_label_tag_with_i18n(text = nil, options = {}) 
   5          text ||= object.class.human_attribute_name(method_name) if object.class.respond_to?(:human_attribute_name) 
   6   
   7          to_label_tag_without_i18n(text, options) 
   8        end 
   9   
  10        alias_method_chain :to_label_tag, :i18n 
  11      end 
  12    end 
  13  end
created by leozera — 22 November 2009 — get a short url — tags: helper rails ruby — embed

paperclip refresh all images Delicious Email

run this task

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   1  rake paperclip:refresh class=MyClass
created by leozera — 26 October 2009 — get a short url — tags: paperclip rails ruby — embed

use default_scope to set up default find conditions such as order Delicious Email

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   1  class MyModel < ActiveRecord::Base
   2    default_scope :order => 'created_at desc'
   3  end
created by leozera — 04 October 2009 — get a short url — tags: rails ruby — embed

Detectar se o browser estar offline ou online Delicious Email

Como detectar que seu browser estar offline ou online utilizando de jQuery?
Esse código foi montado e capturado na internet. Por tanto náo é meu.
Agora não sei de quem são os créditos.

Com ele temos como mostrar para o usuário que sua conexão esta offline.

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   1  <script type="text/javascript">
   2  		jQuery.networkDetection = function(url,interval){
   3  			
   4  			var url = url;
   5  			var interval = interval;
   6  			online = false;
   7  			this.StartPolling = function(){
   8  				this.StopPolling();
   9  				this.timer = setInterval(poll, interval);
  10  			};
  11  			
  12  			this.StopPolling = function(){
  13  				clearInterval(this.timer);
  14  			};
  15  			
  16  			this.setPollInterval= function(i) {
  17  				interval = i;
  18  			};
  19  			
  20  			this.getOnlineStatus = function(){
  21  				return online;
  22  			};
  23  			
  24  			function poll() {
  25  				jQuery.ajax({
  26  					type: "POST",
  27  					url: url,
  28  					dataType: "text",
  29  					error: function(){
  30  						online = false; 
  31  						jQuery(document).trigger('status.networkDetection',[false]);
  32  					},
  33  					success: function(){
  34  						online = true; 
  35  						jQuery(document).trigger('status.networkDetection',[true]);
  36  					}
  37  				});
  38  			};
  39  			
  40  			
  41  		};
  42  					
  43  		jQuery(document).ready(function(){
  44  			
  45  			network = new jQuery.networkDetection("/poll", 5000);
  46  			network.StartPolling();
  47  			
  48  			jQuery(document).bind("status.networkDetection", function(e, status){	
  49  				// subscribers can be namespaced with multiple classes
  50  				subscribers = jQuery('.subscriber.networkDetection');
  51  				// publish notify.networkDetection to subscribers
  52  				subscribers.trigger("notify.networkDetection", [status])
  53  				/*
  54  				other logic based on network connectivity could go here
  55  				use google gears offline storage etc
  56  				maybe trigger some other events
  57  				*/
  58  			});
  59  			
  60  			/* 
  61  			Listen for notify.networkDetection events. This could equally be listening
  62  			directly to status.networkDetection events
  63  			*/
  64  			jQuery('#notifier').bind("notify.networkDetection",function(e, online){
  65  				// the following simply demonstrates
  66  				notifier = jQuery(this);
  67  				if(online){
  68  					if (!notifier.hasClass("online")){
  69  						notifier.hide();
  70  						jQuery(this).addClass("online").removeClass("offline").text("Você esta online");
  71  					}
  72  				}else{
  73  					if (!notifier.hasClass("offline")){
  74  						notifier.show();
  75  						jQuery(this).addClass("offline").removeClass("online").text("Sua conexão esta falhando");
  76  					}
  77  				};
  78  			});
  79  			
  80  		});
  81  
  82  
  83  
  84  </script>
  85  
  86  <style type="text/css">
  87  	
  88  	* {
  89  		font-family:verdana, arial, helvetica, sans-serif;
  90  		font-weight:bold;
  91  	}
  92  	
  93  	#notifier{
  94  		border:1px solid #CCCCCC;
  95  		color:#333333;
  96  		margin-left:36%;
  97  		padding:20px;
  98  		position:absolute;
  99  		text-align:center;
 100  		width:300px;
 101  	}
 102  	
 103  	#notifier.online{
 104  		color:#fff;
 105  		background:#3c3;
 106  		border-color:#3c3;
 107  	}
 108  	
 109  	#notifier.offline{
 110  		color:#fff;
 111  		background:#f66;
 112  		border-color:#f66;
 113  	}
 114  	
 115  	
 116  </style>
 117  
 118  
 119  <body class="pagLogin">
 120  	
 121  	<div id="notifier" style="display: none;" class="subscriber networkDetection online">ONLINE</div>
 122  	
 123  </body>
created by thiagonego — 11 September 2009 — get a short url — tags: offline online jQuery javascript — embed

humanized attributes Delicious Email

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   1  class User < ActiveRecord::Base
   2  
   3    HUMANIZED_ATTRIBUTES = {
   4      :email => "E-mail address"
   5    }
   6  
   7    def self.human_attribute_name(attr)
   8      HUMANIZED_ATTRIBUTES[attr.to_sym] || super
   9    end
  10  
  11  end
created by leozera — 22 August 2009 — get a short url — tags: rails ruby — embed

copy to clipboard Delicious Email

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   1  function copyToClipBoard(id) {
   2      Copied = document.getElementById('id').innerText.createTextRange();
   3      Copied.execCommand("Copy");
   4  }
created by leozera — 22 August 2009 — get a short url — tags: javascript — embed

back to top Delicious Email

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   1  <a href="#top" onclick="$('html, body').animate({scrollTop:0}, 'slow'); return false;">top</a>
created by leozera — 22 August 2009 — get a short url — tags: html javascript jquery — embed
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