函数App \ Http \ Controllers \ Admin \ AccountsController :: index（）的参数太少，传递了0，而在laravel中恰好期望了1

Question

成功登录后会话被销毁，或者防护功能出现一些无法保留会话的错误。当在仪表板视图中询问your_session_key时，它提供了null。

Route::group(['prefix' => 'admin'], function () {
Route::namespace('Admin')->group(function () {
Route::group(['middleware' => ['admin_middle','auth:admin']] , function () {
        Route::get('accounts/', 'AccountsController@index')->name('admin.accounts');
        });
    });
});

中间件：App \ Http \ Middleware \ RedirectIfNotAdmin //在内核中注册为'admin_middle'=> \ App \ Http \ Middleware \ RedirectIfNotAdmin :: class，

class RedirectIfNotAdmin
{
public function handle($request, Closure $next, $guard = 'admin')
{
    if (!auth()->guard($guard)->check()) {
        $request->session()->flash('error', 'You must be an Admin to see this page');
        return redirect(route('auth.admin.login'));
    }

    return $next($request);
}
}

Guard：config / auth.php //自定义Guard

'guards' => [
'admin' => [
    'driver' => 'session',
    'provider' => 'admin',

],
],

AccountsController：Controllers \ AccountsController

AccountsController类扩展了Controller{

public function __construct(AdminRepositoryInterface $adminRepository) {
    $this->adminRepo = $adminRepository;
}

private $adminRepo;
public function index(int $id)
{
    $admin = $this->adminRepo->findAdminById($id);

    $talentRepo = new AdminRepository($admin);


    return view('admin.accounts');
}

}

AdminRepositoryInterface：App \ Shop \ Admins \ Repositories \ Interfaces \ AdminRepositoryInterface;

interface AdminRepositoryInterface extends BaseRepositoryInterface
{
public function findAdminById(int $id) : Admin;
}

AdminRepository：App \ Shop \ Admins \ Repositories \ AdminRepository

class AdminRepository extends BaseRepository implements AdminRepositoryInterface
{
public function findAdminById(int $id) : Admin
{
    try {
        return $this->findOneOrFail($id);
    } catch (ModelNotFoundException $e) {
        throw new AdminNotFoundException($e);
    }
}
}

查看：admin \ accounts.blade

@if (Session::has('YOUR_SESSION_KEY'))
{{-- do something with session key --}} 
@else
{{-- session key does not exist  --}} //this has been printed is the ID variable is not passed
@endif
{{$admin->name}}
 <br />{{$admin->email}}

Answer 1

是说$this->adminRepo返回null。

尝试在控制器的构造函数中初始化$this->adminRepo。如果键入提示，请确保将其绑定到服务提供商中。

https://laravel.com/docs/5.8/container#binding-basics