gistfile1.txt

App.Router.map(function() {
  this.route('sign_in');

  this.resource("calendar", function () {
    this.resource("calendar_month", {path: 'month'}, function () {});
    this.resource("calendar_week", {path: 'week'}, function () {});
    this.resource("calendar_day", {path: 'day'}, function () {});
  })
});

gistfile2.txt

App.CalendarController = Ember.Controller.extend({
  queryParams: ['date'],

  date: null,

  _date: Ember.computed('date', function () {
    return moment(this.get('date') || undefined);
  }),

  adjustDateBy: function (interval) {
    this.set('date', this.get('_date').add(interval).format('YYYY-MM-DD'));
  }
});