public function login(Request $req){
        $username = $req->input('username');
        $pass = $req->input('password');
        $rows = DB::table('usuarios')->where(['user_Nombre' => $username])->get();
        if(count($rows) > 0){
            if($rows[0]->user_Pass === $pass){
                echo "Logueado";
            }else{
                echo "Error";
                show("login");
            }
        }
        //echo $username.":".$pass;
    }