refactor: 修改后台文章分类树接口

app/admin/controller/v1/ArticleCategory.php

@@ -32,10 +32,8 @@ class ArticleCategory
             })
             ->order('sort', 'asc')
             ->select();
-        if (!$categorys->isEmpty()) {
-            $categorys = $categorys->toArray();
-        }
-        return success('获取成功',array_to_tree($categorys, 0, 'pid', 1, false));
+
+        return success('获取成功',array_to_tree($categorys->toArray(), 0, 'pid', 1, false));
     }
 
     // 分类分页列表
@@ -57,11 +55,8 @@ class ArticleCategory
             })
             ->order('sort', 'asc')
             ->select();
-        if (!$category->isEmpty()) {
-            $category = $category->toArray();
-        }
 
-        return success('获取成功', array_to_tree($category, 0, 'pid', 1, false));
+        return success('获取成功', array_to_tree($category->toArray(), 0, 'pid', 1, false));
     }
 
     // 分类详情