## 依赖注入 & 控制器 ``` namespace App\Http\Controllers\Admin; use App\Http\Controllers\Controller; use App\Repositories\UserRepository; use Illuminate\Http\Request; class IndexController extends Controller { // 方法注入 public function index(Request $request) { echo $name = $request->name; } // 构造函数注入 public function __construct(UserRepository $users) { $this->users = $users; } } ```