code review by fei.hong: do format coupon list codes

@@ -465,35 +465,36 @@ class UserModel
     {
         $result = array();
         
+        do {
             // 调用接口获取优惠券数据
             $coupons = UserData::couponData($uid, $status, $page);
         
             // 没有获取到优惠券时
-        if (!$coupons) {
+            if (empty($coupons)) {
                 $result['noRecord'] = true;
-
-            return $result;
+                break;
             }
 
-        // 处理优惠券数据
-        if (isset($coupons['data'])) {
-
-            // 不能再查到结果了
-            if ($page == 1 && $coupons['data']['total'] === 0) {
+            if ($page == 1 && isset($coupons['data']['total']) && $coupons['data']['total'] === 0) {
                 $result['noRecord'] = true;
-            } else {
-                $couponArr = array();
-                isset($coupons['data']['info']) && $couponArr = $coupons['data']['info'];
+                break;
+            }
+            
+            // 判断是否有优惠券
+            if (empty($coupons['data']['info'])) {
+                break;
+            }
             
-                foreach ($couponArr as &$val) {
             // 处理已使用的优惠券
             if ($status == 1) {
-                        $val['used'] = true;
-                    }
+                foreach ($coupons['data']['info'] as &$value) {
+                    $value['used'] = true;
                 }
-                !empty($couponArr) && $result['coupons'] = $couponArr;
             }
+            
+            $result['coupons'] = $coupons['data']['info'];
         }
+        while (false);
 
         return $result;
     }