如何验证未绑定字段 [英] How to validate unbound fields

问题描述

我有一个表格ChallengeType".其中有这些字段:

I have a form 'ChallengeType'. Which has these fields:

1) 嵌入式表单 team1
输入字段用户名

1) Embedded form team1
input field username

2) 嵌入表单 team2
输入字段用户名

2) Embedded form team2
input field username

3) 地点
一个挑战领域

3) Place
a challenge field

4) 日期
一个挑战领域

4) Date
a challenge field

每个团队的用户名字段在 TeamType 类中设置如下:

The username field for each team has been set like this in the TeamType class:

public function buildForm(FormBuilder $builder, array $options)
{
    $builder
        ->add('player_one', 'fos_user_username', array(
            'property_path' => false,
            'attr' => array('class' => 'player_autocomplete')
        ))
    ;
}

因为property_path 设置为false，所以这个用户名字段是未绑定的.

Because the property_path is set to false, this username field is unbound.

我想验证此字段，以确保输入的用户名是现有用户名.请问我该怎么做?

I would like to validate this field, to make sure that the inputted username is an existing one. How can I do that please?

推荐答案

您可以通过以下方式进行

You can do it by following way

$builder-> addValidator(new CallbackValidator(function(FormInterface $form){
  $player_one = $form['player_one'];
    //validate
      //validation failed?
      $form['player_one']->addError(new FormError("error message"));
});

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