【问题标题】:Service dependence injection not include manager symfony2服务依赖注入不包括管理器 symfony2
【发布时间】:2015-12-03 09:04:53
【问题描述】:

伙计们,出于某种原因,我正在尝试将其包含在一种表单类型中,经理未将其包含在构造函数中,这可能是一个简单的错字,但现在我无法通过 symfony2 (2.7) 的食谱示例看到错误.

这是 FormType FloorType

namespace George\FloorBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use George\FloorBundle\Form\DataTransformer\ObjectToNumberTransformer;
use Doctrine\Common\Persistence\ObjectManager;

class FloorType extends AbstractType
{
private $manager;

public function __construct(ObjectManager $manager)
{
    $this->manager = $manager;
}
/**
 * @param FormBuilderInterface $builder
 * @param array $options
 */
public function buildForm(FormBuilderInterface $builder, array $options)
{

    $builder
        ->add('translations', 'a2lix_translations',array(
            'required_locales' => array('bg','en')
        ))
    ->add('object', 'hidden', array(
        // validation message if the data transformer fails
       'invalid_message' => 'That is not a valid issue number',
    ));

    $builder ->get('object')->addModelTransformer(new ObjectToNumberTransformer($this->manager));
}

/**
 * @param OptionsResolverInterface $resolver
 */
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
        'data_class' => 'George\FloorBundle\Entity\Floor'
    ));
}

/**
 * @return string
 */
public function getName()
{
    return 'george_floorbundle_floor';
}
}

需要注入管理器的服务

<?xml version="1.0" encoding="UTF-8" ?>
<container xmlns="http://symfony.com/schema/dic/services"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
<services>
    <service id="app.form.type.floor" class="George\FloorBundle\Form\Type\FloorType">
        <tag name="form.type" />
        <argument type="service" id="doctrine.orm.entity_manager"></argument>
    </service>
</services>

使用管理器的转换器但我没有错误,我只想做一个完整的案例

<?php
namespace George\FloorBundle\Form\DataTransformer;

use George\ObjectsBundle\Entity\Object;
use Doctrine\Common\Persistence\ObjectManager;
use Symfony\Component\Form\DataTransformerInterface;
use Symfony\Component\Form\Exception\TransformationFailedException;

class ObjectToNumberTransformer implements DataTransformerInterface
{
private $manager;

public function __construct(ObjectManager $manager)
{
    $this->manager = $manager;
}

/**
 * Transforms an object (issue) to a string (number).
 *
 * @param  Object|null $issue
 * @return string
 */
public function transform($object)
{

    if (null === $object) {
        return '';
    }

    return $object->getId();
}

/**
 * Transforms a string (number) to an object (issue).
 *
 * @return Object|null
 * @throws TransformationFailedException if object (issue) is not found.
 */
public function reverseTransform($objectNumber)
{
    // no issue number? It's optional, so that's ok
    if (!$objectNumber) {
        return;
    }

    $object= $this->manager
        ->getRepository('ObjectsBundle:Object')
        // query for the issue with this id
        ->find($objectNumber)
    ;

    if (null === $object) {
        // causes a validation error
        // this message is not shown to the user
        // see the invalid_message option
        throw new TransformationFailedException(sprintf(
            'An issue with number "%s" does not exist!',
            $objectNumber
        ));
    }

    return $object;
}
}

以及我需要加载 FloorType 的控制器方法:

  private function createEditForm(Floor $entity)
{
    $manager = $this->getDoctrine()->getManager();
    $form = $this->createForm(new FloorType($manager), $entity, array(
        'action' => $this->generateUrl('admin_floor_update', array('id' => $entity->getId())),
        'method' => 'PUT',
    ));

    $form->add('submit', 'submit', array('label' => 'Update'));

    return $form;
}

所以当我删除经理时:

$manager = $this->getDoctrine()->getManager();

我遇到了一个大错误:

可捕获的致命错误:传递给 George\FloorBundle\Form\FloorType::__construct() 的参数 1 必须实现接口 Doctrine\Common\Persistence\ObjectManager,没有给出,在 D:\work\infinity3\src\George\ 中调用FloorBundle\Controller\FloorController.php 在第 171 行并定义了

我是这样理解的 - 服务没有设法注入管理器

在本地包中调试服务

我已经调试了服务并且它已列出,但我无法管理它以将管理器包含在 FloorType 中我在这里错过了什么?

编辑

所以这是服务 xml 问题,由于@Matteo 的回答,我没有包含别名属性,我编辑了代码,它就像一个魅力! 谢谢@Matteo!

这里是编辑服务

 <services>
    <service id="app.form.type.floor" class="George\FloorBundle\Form\FloorType">
        <tag name="form.type" alias="george_floorbundle_floor" />
        <argument type="service" id="doctrine.orm.entity_manager"></argument>
    </service>
</services>

我在哪里创建表单:

 $form = $this->createForm('george_floorbundle_floor', $entity, array(
        'action' => $this->generateUrl('admin_floor_update', array('id' => $entity->getId())),
        'method' => 'PUT',
    ));

【问题讨论】:

    标签: php symfony service doctrine-orm dependency-injection


    【解决方案1】:

    您应该在标签部分定义一个别名,如下所示:

    服务.xml

    <services>
        <service id="app.form.type.floor" class="George\FloorBundle\Form\Type\FloorType">
            <tag name="form.type" alias="george_floorbundle_floor" />
            <argument type="service" id="doctrine.orm.entity_manager"></argument>
        </service>
    </services>
    

    并在表单创建中使用引用进行引用,如下:

    $form = $this->createForm('george_floorbundle_floor', $entity, array(
            'action' => $this->generateUrl('admin_floor_update', array('id' => $entity->getId())),
            'method' => 'PUT',
        ));
    

    希望有帮助

    【讨论】:

    • 谢谢@Matteo 就是这个!
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