diff --git a/app/common/Implement/Repository/Mapper.php b/app/common/Implement/Repository/Mapper.php
index d17aeaf..0f94b27 100644
--- a/app/common/Implement/Repository/Mapper.php
+++ b/app/common/Implement/Repository/Mapper.php
@@ -68,7 +68,7 @@ class Mapper implements Define\Repository\Mapper
             }
             $value = $data[$column];
             if ($this->hasFunction()) {
-                if ($value !== null) {
+                if ($value !== null and $value !== '') {
                     try {
                         $value = ($this->function)($data);
                     } catch (EmptyResult $exception) {