修改 uid 校验

@@ -213,7 +213,7 @@ function getNamedCoupon(activityId, couponId, isApp, userIsLogged)
 {
     $.ajax({
         type: 'POST',
-        url: !isApp ? '/cuxiao/coupon/getnamed' : '/cuxiao/coupon/getnamed?uid=' + GetQueryString('uid'),
+        url: isApp && uid ? '/cuxiao/coupon/getnamed?uid=' + uid : '/cuxiao/coupon/getnamed',
         data: 'activityId=' + activityId + '&couponId=' + couponId,
         success: function (data) {
             setCookie('_Coupon' + activityId, null, {

@@ -971,7 +971,7 @@ class CouponController extends HuodongAction
                     $uid = $this->get('uid'); // session 获取不到 UID，直接获取查询字符串的 uid, 严重问题，不安全，需要修复
                 }
 
-                if (!$uid) {
+                if (empty($uid)) {
                     $result['code'] = 400;
                     $result['message'] = '请先登录';
                     $result['data'] = Helpers::url('/signin.html', array('refer' => $this->server('HTTP_REFERER', '/')), 'default');