[英]Access child entity property from string - Twig / Symfony
How can I access child entity property value in twig
. 如何在
twig
访问子实体属性值。 Example : 示例:
This is wokring : 这就是:
{% for entity in array %}
{{ entity.child.child.prop1 }}
{% endfor %}
I wont to pass s string as param to get the same thing : 我不会将s字符串作为参数传递给同样的东西:
{% for entity in array %}
{{ attribute(entity, "child.child.prop1") }}
{% endfor %}
But I get error : 但我得到错误:
Method "child.child.prop1" for object "CustomBundle\\Entity\\Entity1" does not exist...
对象“CustomBundle \\ Entity \\ Entity1”的方法“child.child.prop1”不存在...
Is there any way to do that? 有没有办法做到这一点?
You can write a custom twig extension with a function that uses the PropertyAccess component of symfony to retrieve the value. 您可以使用函数编写自定义twig扩展 ,该函数使用symfony的PropertyAccess组件来检索值。 An example extension implementation can be Like:
示例扩展实现可以是:
<?php
use Symfony\Component\PropertyAccess\PropertyAccess;
class PropertyAccessorExtension extends \Twig_Extension
{
/** @var PropertyAccess */
protected $accessor;
public function __construct()
{
$this->accessor = PropertyAccess::createPropertyAccessor();
}
public function getFunctions()
{
return array(
new \Twig_SimpleFunction('getAttribute', array($this, 'getAttribute'))
);
}
public function getAttribute($entity, $property) {
return $this->accessor->getValue($entity, $property);
}
/**
* Returns the name of the extension.
*
* @return string The extension name
*
*/
public function getName()
{
return 'property_accessor_extension';
}
}
After registering this extension as service , you can then call 将此扩展名注册为服务后 ,您可以调用
{% for entity in array %}
{{ getAttribute(entity, "child.child.prop1") }}
{% endfor %}
Happy coding! 快乐的编码!
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