update application/common/library/SelectPage.php.

新selectpage类中验证字段名是否在允许列表中的方法只验证了数据库表字段，并未验证模型中追加的属性，若要获取模型追加的属性会报参数错误

Signed-off-by: 还俗二师兄 <505097558@qq.com>

application/common/library/SelectPage.php

@@ -221,7 +221,7 @@ class SelectPage
     protected function validateField(string $field)
     {
         $field = strtolower($field);
-        if (!in_array($field, $this->allowedFields, true)) {
+        if (!in_array($field, $this->allowedFields, true) && !in_array($field, $this->resolveSelectpageFields(), true)) {
             throw new Exception('Invalid parameters');
         }
     }