laravel - 调用未定义的函数 - laravel

Question

我想使用辅助函数，但在我看来出现了这个错误:

Call to undefined function createSubCategories()

我的辅助函数的路径:

Http\Controllers\Utilities\Helpers.php

我的助手:

<?php
namespace App\Http\Controllers\Utilities;


    function createSubCategories($parent_cat_id = 0)
    {

        $subs = DB::table('categories')->where('parent_cat_id', '=', $parent_cat_id)->get();
        if (count($subs) > 0) {
            echo '<ul>';
            foreach ($subs as $sub) {
                echo '<li>' . $sub->title_fa;
                echo $this->createSubCategories(($sub->id));
                echo '</li>';
            }
            echo '</ul>';
        }
    }

在 composer.json 中:

"autoload": {
    "classmap": [
        "database"
    ],
    "psr-4": {
        "App\\": "app/"
    },
    "files":
    [
        "app/Http/Controllers/Utilities/Helpers.php"
    ]
},

我使用了 composer dump-autoload。

我的看法:

{{createSubCategories(0)}}

Answer 1

已解决:

我刚刚删除了命名空间:

namespace App\Http\Controllers\Utilities;