Symfony2在FormType中注入EntityMananager [英] Symfony2 inject EntityMananager in FormType

问题描述

自定义表单类型

Custom form type

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Doctrine\ORM\EntityManager;

class NationaliteitidType extends AbstractType 
{
private $doctrine;
private $em;

public function __construct(EntityManager  $em)
{
    $this->em = $em;
}

service.yml
服务：

service.yml services:

fw_core.form.type:
    class: FW\CoreBundle\Form\Type\NationaliteitidType
    arguments: 
        entityManager: "@doctrine.orm.entity_manager"

错误：

传递给FW\CoreBundle\Form\TypeNationaliteitidType :: __ construct（）的参数1必须是Doctrine\ORM\EntityManager的实例，没有给出，

Argument 1 passed to FW\CoreBundle\Form\TypeNationaliteitidType::__construct() must be an instance of Doctrine\ORM\EntityManager, none given,

我必须已经创建了某种类型或其他明显的类型，但确实找不到它。

I must have made an type or something else obvious but realy can't find it.

推荐答案

在您的services.yml中，您无法命名将来的变量，因此请尝试如下操作：

In your services.yml, you can't name your future variables, so try something like this :

services :
    fw_core.form.type:
        class: FW\CoreBundle\Form\Type\NationaliteitidType
        arguments: 
            - "@doctrine.orm.entity_manager"

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