发布于 2015-08-27 16:38:18 | 113 次阅读 | 评论: 0 | 来源: 网络整理
Validates that a value is of a specific data type. For example, if a variable
should be an array, you can use this constraint with the array type option
to validate this.
| Applies to | property or method |
| Options | |
| Class | Type |
| Validator | TypeValidator |
# src/Acme/BlogBundle/Resources/config/validation.yml
AcmeBlogBundleEntityAuthor:
properties:
age:
- Type:
type: integer
message: The value {{ value }} is not a valid {{ type }}.
// src/Acme/BlogBundle/Entity/Author.php
namespace AcmeBlogBundleEntity;
use SymfonyComponentValidatorConstraints as Assert;
class Author
{
/**
* @AssertType(type="integer", message="The value {{ value }} is not a valid {{ type }}.")
*/
protected $age;
}
<!-- src/Acme/BlogBundle/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="AcmeBlogBundleEntityAuthor">
<property name="age">
<constraint name="Type">
<option name="type">integer</option>
<option name="message">The value {{ value }} is not a valid {{ type }}.</option>
</constraint>
</property>
</class>
</constraint-mapping>
// src/Acme/BlogBundle/Entity/Author.php
namespace AcmeBlogBundleEntity;
use SymfonyComponentValidatorMappingClassMetadata;
use SymfonyComponentValidatorConstraints as Assert;
class Author
{
public static function loadValidatorMetadata(ClassMetadata $metadata)
{
$metadata->addPropertyConstraint('age', new AssertType(array(
'type' => 'integer',
'message' => 'The value {{ value }} is not a valid {{ type }}.',
)));
}
}
type: string [default option]
This required option is the fully qualified class name or one of the PHP datatypes
as determined by PHP’s is_ functions.
Also, you can use ctype_ functions from corresponding built-in PHP extension.
Consider a list of ctype functions:
Make sure that the proper locale is set before using one of these.
type: string default: This value should be of type {{ type }}.
The message if the underlying data is not of the given type.
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.