symfony验证另一个字段是否为特定值

Question

如果另一个字段(3)是选项'a',我正在尝试为字段(1)编写验证,如果3是'b',则尝试不同的字段(2).我该怎么做呢？

编辑:这是一个实体.我将发布一个我正在尝试的样本.

/**
*@Assert\Collection(
*fields = { aName = @Assert\NotBlank(),
*           aAmount = @Assert\NotBlank() }
*/
protected $1;

/**
*@Assert\Collection(
*fields = { bName = @Assert\NotBlank(),
*           bAmount = @Assert\NotBlank() }
*/
protected $2;

/**
*@Assert\NotBlank()
*/
protected $3;

如果$ 3 =='a',我需要1美元,如果$ 3 =='b'则需要2美元.

Answer 1

您可以使用验证约束:表达式

例:

/**
* @Assert\Expression(
 *     "not (this.getThird() == 'a' and this.getFirst() == null)",
 *     message="If third = 'a', first should be not null"
 * )
 */
protected $first;

/**
 * @Assert\Expression(
 *     "not (this.getThird() == 'b' and this.getSecond() == null)",
 *     message="If third = 'b', second should be not null"
 * )
 */
protected $second;

protected $third;

public function getFirst()
{
     return $this->first;   
}

public function getSecond()
{
     return $this->second;   
}

public function getThird()
{
     return $this->third;   
}