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ExpressionLanguage 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 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;

    // ...
}