LessThan.rst

LessThan

.. versionadded:: 2.3
    The ``LessThan`` constraint was introduced in Symfony 2.3.

Validates that a value is less than another value, defined in the options. To force that a value is less than or equal to another value, see :doc:`/reference/constraints/LessThanOrEqual`. To force a value is greater than another value, see :doc:`/reference/constraints/GreaterThan`.

Applies to	:ref:`property or method<validation-property-target>`
Options	`value`_ message
Class	:class:`Symfony\\Component\\Validator\\Constraints\\LessThan`
Validator	:class:`Symfony\\Component\\Validator\\Constraints\\LessThanValidator`

Basic Usage

If you want to ensure that the age of a Person class is less than 80, you could do the following:

.. configuration-block::

    .. code-block:: yaml

        # src/Acme/SocialBundle/Resources/config/validation.yml
        Acme\SocialBundle\Entity\Person:
            properties:
                age:
                    - LessThan:
                        value: 80

    .. code-block:: php-annotations

        // src/Acme/SocialBundle/Entity/Person.php
        namespace Acme\SocialBundle\Entity;

        use Symfony\Component\Validator\Constraints as Assert;

        class Person
        {
            /**
             * @Assert\LessThan(
             *     value = 80
             * )
             */
            protected $age;
        }

    .. code-block:: xml

        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
        <?xml version="1.0" encoding="UTF-8" ?>
        <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

            <class name="Acme\SocialBundle\Entity\Person">
                <property name="age">
                    <constraint name="LessThan">
                        <option name="value">80</option>
                    </constraint>
                </property>
            </class>
        </constraint-mapping>

    .. code-block:: php

        // src/Acme/SocialBundle/Entity/Person.php
        namespace Acme\SocialBundle\Entity;

        use Symfony\Component\Validator\Mapping\ClassMetadata;
        use Symfony\Component\Validator\Constraints as Assert;

        class Person
        {
            public static function loadValidatorMetadata(ClassMetadata $metadata)
            {
                $metadata->addPropertyConstraint('age', new Assert\LessThan(array(
                    'value' => 80,
                )));
            }
        }

Options

message

type: string default: This value should be less than {{ compared_value }}.

This is the message that will be shown if the value is not less than the comparison value.