Merge branch 'develop' of http://47.244.231.31:8099/zhl/globalso-v6 into develop

@@ -151,6 +151,10 @@ class BaseController extends Controller
             if (is_array($v)) {
                 $data[$k] = $this->_extents($v);
             } else {
+                if (is_null($v)) {
+                    $data[$k] = '';
+                    continue;
+                }
                 switch ((string) $k) {
                     case 'image':
                         $data['image_link'] = url('/a/image/' . $v);