refactor: 修改附件分类支持上下级

app/admin/validate/v1/AttachmentCategoryValidate.php

@@ -3,6 +3,8 @@ declare (strict_types = 1);
 
 namespace app\admin\validate\v1;
 
+use app\admin\model\v1\AttachmentCategoryModel;
+use think\facade\Db;
 use think\Validate;
 
 class AttachmentCategoryValidate extends Validate
@@ -15,6 +17,7 @@ class AttachmentCategoryValidate extends Validate
      */
     protected $rule = [
         'id'          => 'require|integer',
+        'pid'         => 'integer|checkPidNotBeChildren',
         'language_id' => 'require|integer',
         'name'        => 'require|max:64',
         'sort'        => 'integer',
@@ -28,22 +31,50 @@ class AttachmentCategoryValidate extends Validate
      * @var array
      */
     protected $message = [
-        'id.require'            => 'ID不能为空',
-        'id.integer'            => 'ID必须是整数',
-        'language_id.require'   => '语言ID不能为空',
-        'language_id.integer'   => '语言ID必须是整数',
-        'name.require'          => '名称不能为空',
-        'name.max'              => '名称不能超过64个字符',
-        'sort.integer'          => '排序必须是整数',
-        'is_show.in'            => '是否显示必须是0或1',
+        'id.require'                => 'ID不能为空',
+        'id.integer'                => 'ID必须是整数',
+        'pid.integer'               => '父级ID必须是整数',
+        'pid.checkPidNotBeChildren' => '父级分类不能为自身或自身的子分类',
+        'language_id.require'       => '语言ID不能为空',
+        'language_id.integer'       => '语言ID必须是整数',
+        'name.require'              => '名称不能为空',
+        'name.max'                  => '名称不能超过64个字符',
+        'sort.integer'              => '排序必须是整数',
+        'is_show.in'                => '是否显示必须是0或1',
     ];
 
+    // 验证pid
+    protected function checkPidNotBeChildren($value, $rule, $data = [])
+    {
+        if ($value == 0) {
+            return true;
+        }
+        $table_name = (new AttachmentCategoryModel)->getTable();
+        $children = Db::query(
+            preg_replace(
+                '/\s+/u', 
+                ' ',
+                "WITH RECURSIVE attachment_tree_by AS (
+                    SELECT a.id, a.pid FROM $table_name a WHERE a.id = {$data['id']}
+                    UNION ALL
+                    SELECT k.id, k.pid FROM $table_name k INNER JOIN attachement_tree_by t ON t.id = k.pid
+                )
+                SELECT id FROM attachment_tree_by WHERE id <> {$data['id']};"
+            )
+        );
+        if (!empty($children) && in_array($data['pid'], array_column($children, 'id'))) {
+            return false;
+        }
+
+        return true;
+    }
+
     /**
      * 新增场景
      */
     public function sceneCreate()
     {
-        return $this->remove('id', 'require|integer');
+        return $this->remove('id', 'require|integer')->remove('pid', 'checkPidNotBeChildren');
     }
 
     /**