init file and files var

haohetao · May 8, 2020 · 50c4413 · 50c4413
1 parent 7d6e4c0
commit 50c4413
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/UploadBehavior.php b/src/UploadBehavior.php
@@ -546,9 +546,10 @@ protected function getUploadInstance($attribute)
                 }
             }
         }
-        if (is_object($file)) {
+        $files = null;
+        if (isset($file) && is_object($file)) {
             $files = [$file];
-        } else if (is_array($file)) {
+        } else if (isset($file) && is_array($file)) {
             $files = $file;
         }
         if ($files) {