$infoProduct = $this->Product->find('first', array(
					'conditions' => array(
							'Product.id' => $this->request->data['id']
						)
				));
			if(!empty($infoProduct)){
				$key = $this->request->data['id'];
				if($this->Session->check('cart')){
					$infoCart = $this->Session->read('cart');
					$infoCart[$key]['Cart']['Product']['id'] =  $infoProduct['Product']['id'];
					$infoCart[$key]['Cart']['Product']['title'] =  $infoProduct['Product']['title'];
					$infoCart[$key]['Cart']['Product']['thumbnail'] =  $infoProduct['Product']['thumbnail'];
					$infoCart[$key]['Cart']['Product']['price'] =  $infoProduct['Product']['price'];
					$infoCart[$key]['Cart']['Order']['quantity'] =  $this->request->data['quantity'];
					$infoCart[$key]['Cart']['Order']['pay'] = $this->request->data['quantity'] * $infoProduct['Product']['price'];
					$this->Session->write('cart', $infoCart);
				} else {
					$infoCart[$key]['Cart']['Product']['id'] =  $infoProduct['Product']['id'];
					$infoCart[$key]['Cart']['Product']['title'] =  $infoProduct['Product']['title'];
					$infoCart[$key]['Cart']['Product']['thumbnail'] =  $infoProduct['Product']['thumbnail'];
					$infoCart[$key]['Cart']['Product']['price'] =  $infoProduct['Product']['price'];
					$infoCart[$key]['Cart']['Order']['quantity'] =  $this->request->data['quantity'];
					$infoCart[$key]['Cart']['Order']['pay'] = $this->request->data['quantity'] * $infoProduct['Product']['price'];
					$this->Session->write('cart', $infoCart);
				}
 
				$numOrder = 0;
				foreach ($this->Session->read('cart') as $key => $listCartitem) {
					$numOrder++;
				}
				echo $numOrder;
			};