public function detail()
{
$goods_id = $_GET['goods_id'] + 0;
$goods_model = new \Model\GoodsModel();
$goods_info = $goods_model->find($goods_id);
//如果没有商品则跳转到首页
if (empty($goods_info)) {
header('location:/index.php');
}
//取出商品属性
$attrdata = M('GoodsAttr')->field("a.id,a.attr_id,a.attr_value,b.attr_type,b.attr_name")->join("a left join it_attribute b using(attr_id)")->where("goods_id={$goods_id}")->select();
//重置数组，把单选属性过滤出来，方便遍历
$radiodata = array();
foreach ($attrdata as $v) {
if ($v['attr_type'] == 1) {
$radiodata[$v['attr_id']][] = $v;
}
}
$this->assign('radiodata', $radiodata);
//取出栏目家谱树，用做面包屑导航
$cat_model = new \Model\CategoryModel();
$cat_family = $cat_model->getFamily($goods_info['cat_id']);
$this->assign('cat_family', $cat_family);
$this->assign('goods_info', $goods_info);
$this->display();
}
