modify

Database/Base/BaseActiveRecord.php

@@ -580,7 +580,7 @@ abstract class BaseActiveRecord extends Component implements IOrm, ArrayAccess
         foreach ($this->_attributes as $key => $val) {
             $oldValue = $this->_oldAttributes[$key] ?? null;
             if ($val !== $oldValue) {
-				$_tmp[$key] = $columns->encode($val, $columns->clean($format[$key]));
+                $_tmp[$key] = $this->toFormat($columns, $format, $key, $val);
             } else {
                 $condition[$key] = $val;
             }
@@ -589,6 +589,22 @@ abstract class BaseActiveRecord extends Component implements IOrm, ArrayAccess
     }
 
 
+    /**
+     * @param $columns
+     * @param $format
+     * @param $key
+     * @param $value
+     * @return mixed
+     */
+    public function toFormat($columns, $format, $key, $value)
+    {
+        if (isset($format[$key])) {
+            return $columns->encode($value, $columns->clean($format[$key]));
+        }
+        return $value;
+    }
+
+
     /**
      * @param $name
      * @param $value