Valid

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This constraint is used to enable validation on objects that are embedded as properties on an object being validated. This allows you to validate an object and all sub-objects associated with it.

Applies to property or method
Options
Class Valid

Tip

By default the error_bubbling option is enabled for the collection Field Type, which passes the errors to the parent form. If you want to attach the errors to the locations where they actually occur you have to set error_bubbling to false.

Basic Usage

In the following example, create two classes Author and Address that both have constraints on their properties. Furthermore, Author stores an Address instance in the $address property:

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// src/AppBundle/Entity/Address.php
namespace AppBundle\Entity;

class Address
{
    protected $street;
    protected $zipCode;
}
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// src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

class Author
{
    protected $firstName;
    protected $lastName;
    protected $address;
}
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// src/AppBundle/Entity/Address.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Address
{
    /**
     * @Assert\NotBlank
     */
    protected $street;

    /**
     * @Assert\NotBlank
     * @Assert\Length(max=5)
     */
    protected $zipCode;
}

// src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    /**
     * @Assert\NotBlank
     * @Assert\Length(min=4)
     */
    protected $firstName;

    /**
     * @Assert\NotBlank
     */
    protected $lastName;

    protected $address;
}

With this mapping, it is possible to successfully validate an author with an invalid address. To prevent that, add the Valid constraint to the $address property.

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// src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    /**
     * @Assert\Valid
     */
    protected $address;
}

If you validate an author with an invalid address now, you can see that the validation of the Address fields failed.

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AppBundle\\Author.address.zipCode:
    This value is too long. It should have 5 characters or less.

Options

traverse

type: boolean default: true

If this constraint is applied to a property that holds an array of objects, then each object in that array will be validated only if this option is set to true.

deep

Caution

The deep option was deprecated in Symfony 2.5 and will be removed in Symfony 3.0. When traversing arrays, nested arrays are always traversed. When traversing nested objects, their traversal strategy is used.

type: boolean default: false

If this constraint is applied to a property that holds an array of objects, then each object in that array will be validated recursively if this option is set to true.

payload

type: mixed default: null

This option can be used to attach arbitrary domain-specific data to a constraint. The configured payload is not used by the Validator component, but its processing is completely up to you.

For example, you may want to use several error levels to present failed constraints differently in the front-end depending on the severity of the error.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.
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