“字段不存在” - 提交表单时出错

Question

我在Challenge-controller的“new-action”中有这个代码。当我提交Challenge-form时，它会抛出错误“field player_one not exists”。

if ($form->isValid()) 
{    
    foreach($form->get('teams') as $team_form) 
    {
        $player_one = $team_form->get('player_one')->getData();  
        $player_two = $team_form->get('player_two')->getData();

        $user_one = $this->getDoctrine()->getRepository('TennisconnectUserBundle:User')->findOneByUsername($player_one);
        $user_two = $this->getDoctrine()->getRepository('TennisconnectUserBundle:User')->findOneByUsername($player_two);

        // Add user(s) to the two teams
        foreach($challenge->getTeams() as $i => $team)
        {
            // First team
            if($i == 0)
            {
                if($user_one)
                {
                    $team->addUser($user_one);                                
                } elseif($user_two)
                {
                    $team->addUser($user_two);
                }
            } 
            // Second team
            elseif($i == 1)
            {
                if($user_one)
                {
                    $team->addUser($user_one);                                
                } elseif($user_two)
                {
                    $team->addUser($user_two);
                }
            }
        }
    }

    $em = $this->getDoctrine()->getEntityManager();
    $em->persist($challenge);
    $em->flush();               

    return $this->render('TennisconnectDashboardBundle:Default:index.html.twig', array('form' => $form->createView(), 'user' => $user));
}

但是当我调试“$ player_one”时，它会从文本框中给出正确的值：

$player_one = $team_form->get('player_one')->getData();
die($player_one);

Answer 1

发现问题。 当我这样做时，它给了我3个结果，而我只是在挑战表中添加了2个团队表格。

die(count($form->get('teams')));

我不得不像这样删除csrf令牌

$form->get('teams')->remove('_token');