没有登录错误的Laravel 5.7身份验证：此集合实例上不存在Property [id]

Question

I'm trying to force an authentication without login with Laravel 5.7 like that:

public function login()
{

    $cpf = Request::only('cpf');
    $user = new User;
    $user = $user->where('cpf', $cpf)->get();
    Auth::loginUsingId($user->id);
    return redirect('/perfil');

}

And I get this error: Property [id] does not exist on this collection instance.

When I debug the model User, all the attributes are there. But when I try to get the attributes, I get this error. What I'm doing wrong?

If there's any other way to authenticate without password, It would be helpful!

Answer 1

If cpf is a unique column, then the following will return the object you're looking for:

$user = User::where('cpf', $cpf)->first();

If you do ->get() as in your code, you'll get a Collection with exactly one object in it, and will need to do $user->first()->id.

https://laravel.com/api/5.6/Illuminate/Database/Eloquent/Builder.html#method_get