fix: nas帮助中心搜索

app/index/controller/TopicNas.php

@@ -269,6 +269,25 @@ class TopicNas extends Common
     {
         $keywords = request()->post('keywords');
         // 根据关键词查询文章
+        $parent = ArticleCategoryModel::uniqueLabel('CATEGORY_681182e0a4529')
+            ->language($this->lang_id)
+            ->value('id');
+            
+        // 获取帮且中心分类子分类
+        $table_name = (new ArticleCategoryModel)->getTable();
+        $categorys = \think\facade\Db::query(preg_replace(
+            '/\s+/u', 
+            ' ',
+            "WITH RECURSIVE article_tree_by AS (
+                SELECT a.id, a.pid FROM $table_name a WHERE a.id = {$parent}
+                UNION ALL
+                SELECT k.id, k.pid FROM $table_name k INNER JOIN article_tree_by t ON t.id = k.pid
+            )
+            SELECT id FROM article_tree_by WHERE id <> {$parent}"
+        ));
+        if (empty($categorys)) return success('success', []);
+
+        // 获取文章数据
         $articles = ArticleModel::field([
                 'id',
                 'title'
@@ -277,6 +296,7 @@ class TopicNas extends Common
                 'title' => $keywords??null
             ])
             ->language($this->lang_id)
+            ->where('category_id', 'IN', array_column($categorys, 'id'))
             ->select();
 
         return success('success', $articles->toArray());