发布于 2015-08-27 16:49:55 | 125 次阅读 | 评论: 0 | 来源: 网络整理
2.3 新版功能: The EqualTo constraint was introduced in Symfony 2.3.
Validates that a value is equal to another value, defined in the options. To force that a value is not equal, see NotEqualTo.
警告
This constraint compares using ==, so 3 and "3" are considered
equal. Use IdenticalTo to compare with
===.
| Applies to | property or method |
| Options | |
| Class | EqualTo |
| Validator | EqualToValidator |
If you want to ensure that the age of a Person class is equal to
20, you could do the following:
# src/Acme/SocialBundle/Resources/config/validation.yml
AcmeSocialBundleEntityPerson:
properties:
age:
- EqualTo:
value: 20
// src/Acme/SocialBundle/Entity/Person.php
namespace AcmeSocialBundleEntity;
use SymfonyComponentValidatorConstraints as Assert;
class Person
{
/**
* @AssertEqualTo(
* value = 20
* )
*/
protected $age;
}
<!-- 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="AcmeSocialBundleEntityPerson">
<property name="age">
<constraint name="EqualTo">
<option name="value">20</option>
</constraint>
</property>
</class>
</constraint-mapping>
// src/Acme/SocialBundle/Entity/Person.php
namespace AcmeSocialBundleEntity;
use SymfonyComponentValidatorMappingClassMetadata;
use SymfonyComponentValidatorConstraints as Assert;
class Person
{
public static function loadValidatorMetadata(ClassMetadata $metadata)
{
$metadata->addPropertyConstraint('age', new AssertEqualTo(array(
'value' => 20,
)));
}
}
type: mixed [default option]
This option is required. It defines the value to compare to. It can be a string, number or object.
type: string default: This value should be equal to {{ compared_value }}.
This is the message that will be shown if the value is not equal.
type: mixed default: null
2.6 新版功能: The payload option was introduced in Symfony 2.6.
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.
For example, you may want to used several error levels to present failed constraint differently in the front-end depending on the severity of the error.