我建议您使用回调验证器。

例如，在您的实体类中：

 <？php 

使用Symfony \Component\ Validator \Constraints as Assert; 
 $ b $ ** 
 * @ Assert\Callback（methods = {myValidation}）
 * / 
 class设置{
 public function myValidation （ExecutionContextInterface $ context）
 {
 if（
 $ this-> getRadioSelection（）=='1'//无线电选择示例
&& 
 （//检查其他参数
 $ this-> getFiled1（）== null 
）
）
 {
 $ context-> addViolation（'mandatory params ）; 
} 
 //在此放置一些其他验证规则


 code $ $ $ $ $ $ $ 
否则，您可以按照此处所述的方式构建您自己的自定义验证器。一>。 
 

让我知道您需要更多信息。
 

希望这有助于您。
 
So here is the scenario: I have a radio button group. Based on their value, I should or shouldn't validate other three fields (are they blank, do they contain numbers, etc).

Can I pass all these values to a constraint somehow, and compare them there?

Or a callback directly in the controller is a better way to solve this?

Generally, what is the best practice in this case?

I suggest you to use a callback validator.

For example, in your entity class:
<?php

use Symfony\Component\Validator\Constraints as Assert;

/**
 * @Assert\Callback(methods={"myValidation"})
 */
class Setting {
    public function myValidation(ExecutionContextInterface $context)
    {
        if (
                $this->getRadioSelection() == '1' // RADIO SELECT EXAMPLE
                &&
                ( // CHECK OTHER PARAMS
                 $this->getFiled1() == null
                )
            )
        {
            $context->addViolation('mandatory params');
        }
       // put some other validation rule here
    }
}

Otherwise you can build your own custom validator as described here. 

Let me know you need more info.

Hope this helps.