--- a/app/terminal/model/UploadFile.php
+++ b/app/terminal/model/UploadFile.php
@@ -62,12 +62,12 @@
      * 获取全部记录
      * @param array $param
      * @param array $where
-     * @return \think\Collection
+     * @return array
      * @throws \think\db\exception\DataNotFoundException
      * @throws \think\db\exception\DbException
      * @throws \think\db\exception\ModelNotFoundException
      */
-    public function getAll(array $param = []): \think\Collection
+    public function getAll(array $param = []): array
     {
         // 商品列表获取条件
         $params = $this->setQueryDefaultValue($param, [
--- a/app/common/model/SignAction.php
+++ b/app/common/model/SignAction.php
@@ -24,6 +24,28 @@
     // 定义主键
     protected $pk = 'id';
 
+    public function getStartTimeAttr($value)
+    {
+        return $this->formatSignDateTime($value);
+    }
+
+    public function getEndTimeAttr($value)
+    {
+        return $this->formatSignDateTime($value);
+    }
+
+    private function formatSignDateTime($value)
+    {
+        if (!is_string($value)
+            || !preg_match('/^(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})\.0{1,6}$/D', $value, $parts)
+            || !checkdate((int)$parts[2], (int)$parts[3], (int)$parts[1])
+            || (int)$parts[4] > 23 || (int)$parts[5] > 59 || (int)$parts[6] > 59
+            || !($this->db()->getConnection() instanceof \app\common\database\Dm)) {
+            return $value;
+        }
+        return substr($value, 0, 19);
+    }
+
     /**
      * 活动详情
      * @param int $siginId 活动ID
@@ -52,4 +74,4 @@
     {
         return $this->hasMany("SignAddress", 'action_id')->where(['is_delete' => 0]);
     }
-}
\ No newline at end of file
+}