refactor: 修改文章列表筛选

app/admin/controller/v1/Article.php

@@ -12,11 +12,11 @@ class Article
     public function index()
     {
         $param = request()->param([
-            'title',
-            'category_id',
-            'created_at',
-            'page/d'  => 1,
-            'limit/d' => 10,
+            'title'       => '',
+            'category_id' => 0,
+            'created_at'  => '',
+            'page/d'      => 1,
+            'limit/d'     => 10,
         ]);
 
         $article = ArticleModel::withoutField([