通过AJAX方式动态更新ecshop购物车页面的商品数量

每次用户进入ecshop购物流程当需要更改购物车的数量必须手动点击更新按钮,这是非常糟糕的用户体验,我们有必要去改善它。
下面是通过AJAX动态更新ECShop购物车页面数量的解决方案

• 一、前端页面部分(flow.dwt)
• 在商品数量的input框添加对应的js函数
• <INPUT  onblur=”changePrice(document.getElementById(‘goods_number_{$goods.rec_id}’).value,{$goods.rec_id})” name=”goods_number[{$goods.rec_id}]” id=”goods_number_{$goods.rec_id}” value=”{$goods.goods_number}”  id=”ECS_FORMBUY”>
• 在文件最后添加一段js
• <script type=”text/javascript”>
• function changePrice(number,rec_id)
• {
•   var attr = getSelectedAttributes(document.forms[‘ECS_FORMBUY’]);
•   var qty = document.forms[‘ECS_FORMBUY’].elements[‘number’].value;
•    Ajax.call(‘flow.php’, ‘step=update_group_cart&rec_id=’ + rec_id +’&number=’ + number, changePriceResponse, ‘GET’, ‘JSON’);
• }
• function changePriceResponse(res)
• {
•   if (res.error > 0)
•   {
•     document.getElementById(‘sysmsg_error’).innerHTML = res.content;
•     document.all.sysmsg_error.style.display=”;
•   }
•   else
•   {
•     if(document.all.sysmsg_error.style.display==”)
•   {
•    document.all.sysmsg_error.style.display=’none’;
•   }
•  document.getElementById(‘subtotal_’+res.rec_id).innerHTML = res.subtotal;
•  document.getElementById(‘cart_amount’).innerHTML = res.cart_amount;
•   }
• }
• </script>
• 二、在flow.php文件中插入对应的处理代码：
• elseif($_REQUEST[‘step’] == ‘update_group_cart’)
• {
• include_once(‘includes/cls_json.php’);
• $json = new JSON();
• $result = array(‘error’ => ”, ‘content’ => ”);
• $rec_id = $_GET[‘rec_id’];
• $number = $_GET[‘number’];
• $group_buy = group_buy_info($_SESSION[‘extension_id’], $number);
• if(!is_numeric($number))
• {
• $result[‘error’] = ’1′;
• $result[‘content’] =’请输入合法数量’;
• die($json->encode($result));
• }
• if ($group_buy[‘restrict_amount’] > 0 && $number > ($group_buy[‘restrict_amount’] – $group_buy[‘valid_goods’]))
•  {
• $result[‘error’] = ’1′;
• $restrict_amount =  $group_buy[‘restrict_amount’] – $group_buy[‘valid_goods’];
• $result[‘content’] =’您最多可买’.$restrict_amount.’件’;
• die($json->encode($result));
• }
• $sql = “UPDATE ” . $GLOBALS[‘ecs’]->table(‘cart’) . ” SET goods_number = ‘$number’ WHERE rec_id = $rec_id”;
• $GLOBALS[‘db’]->query($sql);
• $subtotal = $GLOBALS[‘db’]->getONE(“select goods_price * goods_number AS subtotal from “.$GLOBALS[‘ecs’]->table(‘cart’).” where rec_id = $rec_id”);
• $cart_amount = cart_amount(”,$_SESSION[‘flow_type’]);
• $result[‘subtotal’] = price_format($subtotal, false);
• $result[‘cart_amount’] = price_format($cart_amount, false);
• $result[‘rec_id’] = $rec_id;
• die($json->encode($result));
• }
• 还等什么？马上清空echsop的缓存刷新页面看看效果吧。