connected

  // Calculate and set ranges: today, yesterday, this week, past week, this month, past month, this year
  switch(newValue) {
      case 'today':
          initial_date.setValue(new Date());
          end_date.setValue(new Date());
          break;
      case 'yesterday':
          var d = new Date();
          d.setDate(d.getDate() - 1);
          initial_date.setValue(d);

connected

// Source: https://groups.google.com/forum/#!topic/angular/hVrkvaHGOfc
// jsFiddle: http://jsfiddle.net/pkozlowski_opensource/PxdSP/14/
// author: Pawel Kozlowski

var myApp = angular.module('myApp', []);

//service style, probably the simplest one
myApp.service('helloWorldFromService', function() {
    this.sayHello = function() {
        return "Hello, World!"