dcat-admin saving问题求助

$form->tags('tags','标签')
                ->ajax('/search_tags?type=article')
                ->customFormat(function ($tags) {

                    // 遍历标签 ID 数组并获取标签名称
                    $tagsIds = \DB::table('tag_pivot')->where('source_id', $this->id)->where('type', 'article')->pluck('tag_id');

                    $tagNames = [];

                    foreach ($tagsIds as $tagId) {
                        $tag = Tag::find($tagId);
                        if ($tag) {
                            $tagNames[] = $tag->name;
                        }
                    }

                    // 将标签名称数组转换为逗号分隔的字符串并返回
                    return implode(', ', $tagNames);
                })->required();Copy

$form->saving(function (Form $form) {
                $tags = $form->input('tags');

                // 在保存表单之前移除所有已存在的关系
                $form->model()->tags()->detach();

                // 删除 tags 输入数据以避免更新错误
                $form->deleteInput('tags');

                // 确保 $tags 是一个数组
                if (!is_array($tags)) {
                    $tags = [];
                }

                $tags = array_filter($tags);

                // 存储已经存在的标签 ID 和新创建的标签
                $tagIds = [];

                // 遍历标签并处理
                foreach ($tags as $tag) {
                    if (is_numeric($tag)) {
                        $tagIds[] = $tag;
                    } else {
                        $verifyTag = Tag::firstOrCreate(['name' => $tag]);
                        $tagIds[] = $verifyTag->id;
                    }
                }

                // 将标签 ID 存储在表单对象的一个属性中
                $form->_tagIds = $tagIds;
            });Copy

$form->saved(function (Form $form) {

                // 使用存储在表单对象中的标签 ID
                $tagIds = $form->_tagIds;

                // 更新标签中间表关联关系
                $form->repository()->model()->tags()->attach($tagIds,['type' => 'article']);
                // 更新标签的发布量
                foreach($tagIds as $tagId) {
                    $tagCount = \DB::table('tag_pivot')->where('tag_id', $tagId)->count();

                    $tagDate = Tag::find($tagId);

                    if($tagDate) {
                        $tagDate->post_count = $tagCount;
                        $tagDate->save();
                    }
                }
            });Copy