Expression Constraint

Syntax

use Symfony\Component\Validator\Constraints as Assert;

class Event
{
/** @Assert\DateTime() */
private $startDate;

/**
 * @Assert\DateTime()
 * @Assert\Expression("value > this.startDate")
 */
private $endDate;

// ...

}

In [Symfony 4.0](Symfony 4.0) a new propertyPath option was added:

use Symfony\Component\Validator\Constraints as Assert;

class Event
{
/** @Assert\DateTime() */
private $startDate;

/**
 * @Assert\DateTime()
 * @Assert\GreaterThan(propertyPath="startDate")
 */
private $endDate;

// ...

}