refactor: 修改附件下载模型

app/admin/model/v1/AttachmentModel.php

@@ -21,12 +21,6 @@ class AttachmentModel extends AttachmentBaseModel
     protected $json = ['attach'];
     // 设置JSON数据返回数组
     protected $jsonAssoc = true;
-    // JSON字段属性类型
-    protected $jsonType = [
-        'attach[*]->file_path' => 'string',
-        'attach[*]->file_ext'  => 'string',
-        'attach[*]->btn_name'  => 'string',
-    ];
 
     // 关联附件分类模型
     public function category()

app/common/model/AttachmentBaseModel.php

@@ -25,7 +25,7 @@ class AttachmentBaseModel extends BaseModel
         'image'            => 'string',
         'applicable_to'    => 'string',
         'support_platform' => 'string',
-        'attach'           => 'string',
+        'attach'           => 'json',
         'sort'             => 'int',
         'recommend'        => 'int',
         'status'           => 'int',