我有2个实体 - 用户和组。它们具有多对多关系,Group用于存储用户角色。
我正在尝试通过添加集合来创建用户编辑表单,我希望能够通过从下拉列表中选择它来添加新角色(仅限于数据库中已有的)
UserType.php:
class UserType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('username')
->add('email')
->add('forename')
->add('surname')
->add('isActive')
->add('joinDate', 'date', array('input' => 'datetime', 'format' => 'dd-MM-yyyy'))
->add('lastActive', 'date', array('input' => 'datetime', 'format' => 'dd-MM-yyyy'))
->add('groups', 'collection', array(
'type' => new GroupType(),
'allow_add' => true,
))
;
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Sfox\CoreBundle\Entity\User'
));
}
}
和GroupType.php:
class GroupType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('name')
->add('role');
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
"data_class" => 'Sfox\CoreBundle\Entity\Group'
));
}
}
这会在基本文本框中显示表单中的角色,但是如果我向表单添加一个条目,它会级联持久保存新的条目到组中,如果我要编辑条目,它将更改基础组数据
我尝试制作GroupSelectType.php:
class GroupSelectType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('role', 'entity', array('class'=>'SfoxCoreBundle:Group', 'property'=>'name'));
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
"data_class" => 'Sfox\CoreBundle\Entity\Group'
));
}
}
将字段添加为“实体”类型,这会显示正确的选择框(但使用默认值)我似乎无法将其绑定到UserType表单!
我希望表单完成的是修改User实体中的底层'groups'ArrayCollection。
有谁知道我怎么做到这一点?
答案 0 :(得分:14)
我为其他遇到类似问题的人制定了解决方案......
我必须创建一个自定义表单类型并将其声明为服务,以便我可以传入实体管理器。然后我需要创建一个dataTransformer来将我的组对象更改为表单的整数
自定义GroupSelectType:
class GroupSelectType extends AbstractType
{
/**
* @var ObjectManager
*/
private $om;
private $choices;
/**
* @param ObjectManager $om
*/
public function __construct(ObjectManager $om)
{
$this->om = $om;
// Build our choices array from the database
$groups = $om->getRepository('SfoxCoreBundle:Group')->findAll();
foreach ($groups as $group)
{
// choices[key] = label
$this->choices[$group->getId()] = $group->getName() . " [". $group->getRole() ."]";
}
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$transformer = new GroupToNumberTransformer($this->om);
$builder->addModelTransformer($transformer);
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
"choices" => $this->choices,
));
}
public function getParent()
{
return 'choice';
}
public function getName()
{
return 'group_select';
}
}
在构造函数中,我获取所有可用的组并将它们放入“choices”数组中,该数组作为选项传递给选择框。
您还会注意到我正在使用自定义数据转换器,这是将groupId(用于表单呈现)更改为Group实体。我也将GroupSelectType作为服务并传入[@ doctrine.orm.entity_manager]
services.yml(bundle config):
services:
sfox_core.type.group_select:
class: Sfox\CoreBundle\Form\Type\GroupSelectType
arguments: [@doctrine.orm.entity_manager]
tags:
- { name: form.type, alias: group_select }
GroupToNumberTranformer.php
class GroupToNumberTransformer implements DataTransformerInterface
{
/**
* @var ObjectManager
*/
private $om;
/**
* @param ObjectManager $om
*/
public function __construct(ObjectManager $om)
{
$this->om = $om;
}
/**
* Transforms an object (group) to a string (number).
*
* @param Group|null $group
* @return string
*/
public function transform($group)
{
if (null === $group) {
return "";
}
return $group->getId();
}
/**
* Transforms a string (number) to an object (group).
*
* @param string $number
* @return Group|null
* @throws TransformationFailedException if object (group) is not found.
*/
public function reverseTransform($number)
{
if (!$number) {
return null;
}
$group = $this->om
->getRepository('SfoxCoreBundle:Group')
->findOneBy(array('id' => $number))
;
if (null === $group) {
throw new TransformationFailedException(sprintf(
'Group with ID "%s" does not exist!',
$number
));
}
return $group;
}
}
我修改过的UserType.php - 注意我现在正在使用我的自定义表单类型“group_select”,因为它作为服务运行:
class UserType extends AbstractType
{
private $entityManager;
public function __construct($entityManager)
{
$this->entityManager = $entityManager;
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$transformer = new GroupToNumberTransformer($this->entityManager);
$builder
->add('username')
->add('email')
->add('forename')
->add('surname')
->add('isActive')
->add('joinDate', 'date', array('input' => 'datetime', 'format' => 'dd-MM-yyyy'))
->add('lastActive', 'date', array('input' => 'datetime', 'format' => 'dd-MM-yyyy'));
$builder
->add(
$builder->create('groups', 'collection', array(
'type' => 'group_select',
'allow_add' => true,
'options' => array(
'multiple' => false,
'expanded' => false,
)
))
);
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Sfox\CoreBundle\Entity\User'
));
}
public function getName()
{
return 'sfox_corebundle_usertype';
}
}