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class Card
  attr_accessor :new_employee_id

  def reassign(employee_id)
    old_card = self.card_assignments.all(:conditions=>["active_since < #{DateTime.now} and #{DateTime.now} < active_until"]).first

    if !old_card.nil?
      old_card.active_until = DateTime.now
      old_card.save
    end

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#EN LA VISTA 
<%= hidden_field_tag(:old_employee_id, @old_employee_id) %>	
<%= f.select("new_employee_id", @employees.collect{|e| [ e.name + " " + e.last_name, e.id ] }, {:include_blank => true, :selected => @old_employee_id}) %>
...

#EN EL CONTROLADOR

# en edit

@card = Card.find(params[:id])

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    params[:page] ||= 1
	params[:order] ||= 'date'
	
	conditions = [""]
	
	if !params[:date_since].nil? and !params[:date_since].empty?
	  conditions[0] += "? < date AND "
	  conditions += [params[:date_since]]
	end
	

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/**
 * Module dependencies.
 */

var express = require('express')
  , routes = require('./routes')
  , i18n = require("i18n")
  , socketio = require("socket.io");

var app = module.exports = express.createServer();

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Libraries

• jQuery - The de-facto library for the modern age. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
• Backbone - Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.
• AngularJS - Conventions based MVC framework for HTML5 apps.
• Underscore - Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects.
• lawnchair - Key/value store adapter for indexdb, localStorage

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Libraries

• 960 Grid System - An effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.
• Compass - Open source CSS Authoring Framework.
• Bootstrap - Sleek, intuitive, and powerful mobile first front-end framework for faster and easier web development.
• Font Awesome - The iconic font designed for Bootstrap.
• Zurb Foundation - Framework for writing responsive web sites.
• SASS - CSS extension language which allows variables, mixins and rules nesting.
• Skeleton - Boilerplate for responsive, mobile-friendly development.

Guides

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