grouped2.js

  groupedDeals: Ember.arrayComputed('contacts', 'deals.@each.status', {
    initialValue: [],
    initialize: function(array, changeMeta, instanceMeta) {
      array.pushObject(Ember.Object.create({key: 'open',name: 'Open Deals',count: 0,value: 0,deals: Ember.A()}));
      array.pushObject(Ember.Object.create({key: 'closed',name: 'Closed Deals',count: 0,value: 0,deals: Ember.A()}));
      array.pushObject(Ember.Object.create({key: 'lost',name: 'Lost Deals',count: 0,value: 0,deals: Ember.A()}));
    },
    addedItem: function(array, deal, changeMeta, instanceMeta) {
      var contact = deal.get('contact');
      
      var observer = (function(_this) {
        return function() {
          var group, status;
          if (!contact.get('isLoaded')) {
            return;
          }
          contact.removeObserver('isLoaded', observer);
          if (contact.get('company') !== _this.get('model')) {
            return;
          }
          
          status = deal.get('status');
          group = ['closed', 'lost'].contains(status) ? array.findBy('key', status) : array.findBy('key', 'open');
          group.incrementProperty('count');
          group.incrementProperty('value', deal.get('value'));
          group.get('deals').pushObject(deal);
        };
      })(this);
      
      if (!contact) {
        return;
      }
      if (!contact.get('isLoaded')) {
        contact.addObserver('isLoaded', observer);
      } else {
        observer();
      }
      
      return array;
    },
    removedItem: function(array, deal, changeMeta, instanceMeta) {
      var group;
      group = array.find(function(group) {
        return group.get('deals').contains(deal);
      });
      if (!group) {
        return;
      }
      group.decrementProperty('count');
      group.decrementProperty('value', deal.get('value'));
      group.get('deals').removeObject(deal);
      return array;
    }
  }),