本文介绍了Symfony2 Assert \ Expression注释不支持常量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
通常,我在所有基于注释的地方都使用Constants
,例如annotations, route and assert annotations
,但是在Assert \ Expression中它抛出Variable "EntityInterface" is not valid around position 26.
这是错误还是罕见的特殊情况?
Generally I use Constants
in all of annotation based places e.g. annotations, route and assert annotations
, but in Assert\Expression it throws Variable "EntityInterface" is not valid around position 26.
Is this a bug or is a special rare case ?
<?php
/**
* @var string
*
* @ORM\Column(name="id_number", type="string", length=11, nullable=true)
* @Assert\Expression(
* "this.getNationality() == EntityInterface::COUNTRY_DEFAULT_VALUE and value != null",
* message = "form.user.validation.id_number.blank",
* groups = {"personal_info"}
* )
* @Assert\Regex(
* pattern="/^([\d]{11})$/",
* match=true,
* message="form.user.validation.id_number.regex",
* groups = {"personal_info"}
* )
*/
private $idNumber;
推荐答案
尝试使用
/**
* @ORM\Column(name="id_number", type="string", length=11, nullable=true)
* @Assert\Expression(
* "this.getNationality() == constant('EntityInterface::COUNTRY_DEFAULT_VALUE') and value != null",
* message = "form.user.validation.id_number.blank",
* groups = {"personal_info"}
* )
*/
而是
(此处省略了示例中的重点部分,重点介绍了使用constant()
).
供参考,请参见
- http://symfony.com/doc/current/components/expression_language/syntax.html#working-with-functions
- http://php.net/manual/en/function.constant.php
- http://symfony.com/doc/current/components/expression_language/syntax.html#working-with-functions
- http://php.net/manual/en/function.constant.php
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