Laravel覆盖EloquentUserProvider以更改validateCredentials(）中的密码字段名

我已经设法通过覆盖各种类/方法来更改代码中的密码字段。但是在尝试覆盖 EloquentUserProvider 并且它是 validateCredentials（） 方法后，我不断收到错误 -

ErrorException in AuthUserProvider.php line 15:
Argument 1 passed to App'Providers'AuthUserProvider::__construct() must be an instance of App'Helpers'Sha1Hasher, instance of Illuminate'Foundation'Application given

我创建了一个覆盖应用程序''提供者''AuthUserProvider.php -

namespace App'Providers;
use Illuminate'Contracts'Auth'Authenticatable as UserContract;
use App'Helpers'Sha1Hasher as HasherContract;
use Illuminate'Auth'EloquentUserProvider;
class AuthUserProvider extends EloquentUserProvider
{
/**
 * AuthUserProvider constructor.
 * @param HasherContract $hasher
 * @param string $model
 */
public function __construct(HasherContract $hasher, $model)
{
    parent::__construct($hasher, $model);
}
/**
 * Validate a user against the given credentials.
 *
 * @param  'Illuminate'Contracts'Auth'Authenticatable  $user
 * @param  array  $credentials
 * @return bool
 */
public function validateCredentials(UserContract $user, array $credentials)
{
    // $plain = $credentials['sha_pass_hash'];
    // return HasherContract::check(...);;
}
}

使用 Laravel 5.2.22。