增加搜索接口

app/index/controller/ArticlesController.php

@@ -375,12 +375,14 @@ class ArticlesController extends BaseController
 
             // 查询相关文章（同分类，排除当前文章，按发布时间倒序取5个）
             $relatedArticles = Articles::where([
-                ['id', '<>', $id],
-                ['cate', '=', $currentCateId],
-                ['delete_time', '=', null],
-                ['status', '=', 2]
+                ['a.id', '<>', $id],
+                ['a.cate', '=', $currentCateId],
+                ['a.delete_time', '=', null],
+                ['a.status', '=', 2]
             ])
-            ->field('id,title,image,views,likes,publishdate')
+            ->field('a.id,a.title,IF(a.image IS NULL OR a.image = \'\', ac.image, a.image) as image,a.views,a.likes,a.publishdate')
+            ->alias('a')
+            ->join('articles_category ac', 'a.cate = ac.id', 'LEFT')
             ->order('publishdate', 'desc')
             ->limit(5)
             ->select();