如何在 Laravel 的服务提供者 Provider 中使用 Trait

<?php

namespace App\Traits;

use App\Model\AdminMenu;

trait AdminMenuTrait
{
    protected $admin_menu_model;

    /**
     * constructor
     *
     * @param AdminMenu $admin_menu_model
     */
    public function __construct(AdminMenu $admin_menu_model)
    {
        $this->admin_menu_model = $admin_menu_model;
    }

    /**
     * @param bool $tree 是否以 tree 结构返回
     * @return array
     */
    public function get_admin_menus($tree = true)
    {
        $admin_menus = $this->admin_menu_model->all()->toArray();
        return $tree ? list_to_tree($admin_menus) : $admin_menus;
    }
}Copy

<?php

namespace App\Providers;

use App\Model\AdminMenu;
use Illuminate\Support\ServiceProvider;
use App\Traits\AdminMenuTrait;

class AppServiceProvider extends ServiceProvider
{
    use AdminMenuTrait;

    protected $admin_menu_model;

    /**
     * constructor
     *
     * @param AdminMenu $admin_menu_model
     */
    public function __construct(AdminMenu $admin_menu_model)
    {
        $this->admin_menu_model = $admin_menu_model;
    }

    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        //
        view()->share('admin_menu_tree_list', $this->get_admin_menus());
    }
}Copy

Argument 1 passed to App\Providers\AppServiceProvider::__construct() must be an instance of App\Model\AdminMenu, instance of Illuminate\Foundation\Application given, called in D:\WWW\laravel_admin\vendor\laravel\framework\src\Illuminate\Foundation\Application.php on line 679Copy