ThinkPHP学习（四）volist标签高级应用之多重嵌套循环

Action代码：

1. public function index(){
2. $prod = I("get.prod_en");
3. $id = I("get.id", 0, "int");
4. if ($prod == ""){
5. $serviceProduct = array();//多重循环遍历的数组

1. //数据保存在两张表中，这里通过循环初始化$serviceProduct数组
2. $service = M("product_class")->order("oid ASC")->select();
3. for ($i = 0; $i < count($service); $i++)
4. {
5. array_push($serviceProduct, array("srvName"=>$service[$i]["pc_cn"], "product"=>M("product")->where("prod_class_id=".$service[$i]["pcid"])->order("oid ASC")->select()));
6. }

1. //如果要在模板中输出变量，必须在在控制器中把变量传递给模板，系统提供了assign方法对模板变量赋
2. 值，无论何种变量类型都统一使用assign赋值。
3. $this->assign("serviceProduct", $serviceProduct);
4. $this->display();
5. }else{
6. if ($id > 0){
7. $this->display("detail");
8. }else{
9. $this->assign('prod_en', $prod);
10. $clsList = M("question_class")->order("oid ASC")->select();
11. $this->assign('clsList', $clsList);
13. $qusList = M("question")->order("oid ASC")->select();
14. $this->assign('qusList', $qusList);
15. $this->display("list");
16. }
17. }
18. }

2. {$sp.srvName}

   {$pd.prod_cn}

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