Why can't I use Related Model created with same request in Laravel?

I have one table in which I store password reset tokens. There are 4 fields in that table. They are user_id , token , created_at and updated_at.

What I want to do is, Check if user already has password reset token or not. If a user already has password reset token, I want to send an email with the same token. If a user does not have a token, I want to create token and then send the email.

Problem is, I can send the email if token is already created. But, I am getting the error Trying to get property of non-object (View: /var/www/html/project_name/resources/views/emails/passwordResetLink.blade.php).

Why can't I access the password reset token with $user->passwordResetLink->token directly after creating the record in the database? Here is my code.

$user = User::findByUsername(request('username'));
if($user)
{
    if(count($user->passwordResetLink))
    {
        $user->passwordResetLink->save();
    }
    else
    {
        $token = md5(str_random(16));

        $record = new PasswordReset;
        $record->user_id = $user->id;
        $record->token = $token;
        $record->save();
    }

    Mail::to($user)->send(New \App\Mail\PasswordResetLink($user));
    return 1;
}

I am trying to access user's password reset token using $user->passwordResetLink->token. It's working fine if the record is already created but not working if the record does not exist.

PS: I am using save() because touch() isn't working because I don't have id field in my password_resets table in the database. let me know what's wrong with the code. I know save() won't work as I am not updating anything!

via Chebli Mohamed