Symfony2,如何在树枝文件中转换数据类型? [英] Symfony2, How to cast data type in a twig file?
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问题描述
我有一些像下面这样的场景:
I have some scenario like below :
/**
* @ORM\Entity
* @ORM\Table(name="role")
*/
class Role
{
/**
* @ORM\OneToMany(targetEntity="RolesFeatures", mappedBy="role", cascade={"all"})
**/
private $rolesFeatures;
}
在我的索引文件中,我想得到它们:
In my index file I would like to get them:
{{ role.rolesFeatures.getId() }}
我明白了:
An exception has been thrown during the rendering of a template ("Catchable Fatal
Error: Object of class Doctrine\ORM\PersistentCollection could not be converted to string
in C:\wamp\www\PMI_sf2\app\cache\dev\twig\63\81\679fca1c2da64d0ebbcd5661bc6d.php line 99")
in PMIHomePagesBundle:HomePages:mainHome.html.twig at line 49.
如何将 Doctrine\ORM\PersistentCollection 转换为真实的对象类?
How I can Cast Doctrine\ORM\PersistentCollection to it real object class ?
推荐答案
rolesFeatures 是一个数组,因此您需要对其进行迭代.类似的东西:
rolesFeatures is an array so you need to iterate over it. Something like:
{% for roleFeature in role.rolesFeatures %}
{{ roleFeature.id }}
{% endfor %}
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