我在为多个关系显示的复选框设置默认值时遇到问题。
我有一个具有多对多关系的User实体和Options实体,映射到user_option表。
在用户表单中,我会在复选框中显示选项列表。
选项实体包含一个默认字段,指示是否为新用户设置或取消设置复选框。如果用户已选择,则必须显示用户选择。
class User {
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @var string
* @ORM\Column(name="name", type="string", length=64, nullable=true)
*/
protected $name;
/**
* @var ArrayCollection
*
* @ORM\ManyToMany(targetEntity="Bundle\Entity\Option", inversedBy="users")
* @ORM\JoinTable(name="user_options")
*/
protected $userOptions;
}
class CommunicationOption {
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @var string
*
* @ORM\Column(name="name", type="string", length=50)
*/
protected $name;
/**
* @var boolean
*
* @ORM\Column(name="default_state", type="boolean")
*/
}
表单加载选项
public function buildForm(FormBuilderInterface $builderInterface, array $options)
{
$builderInterface
->add('userOptions', 'entity', array(
'class' => 'Bundle\Entity\Option',
'expanded' => true,
'multiple' => true,
'required' => false,
'query_builder' => function (EntityRepository $repository) {
return $repository->getFindAllQueryBuilder();
},
'by_reference' => true,
))
;
}
显示所有选项。但是,未选中所有复选框。 如果用户将数据保存在user_options表中,则会正确显示该复选框。
{% for element in form.userOptions %}
{{ form_widget(element, {'attr': {'class': 'col-xs-1' }}) }}
{{ element.vars.label|raw }}
{% endfor %}
我要求对新条目使用默认字段。 在构造函数中设置值不会更改复选框值,并且在任何情况下都会将所有字段的默认值设置为true,这不是我想要的。
我正在使用Symfony 2.6
答案 0 :(得分:2)
您可以尝试使用ChoiceType
代替继承自EntityType
的{{1}}。
EntityType
只是一种通过选项findAll()
或更高级的class
选项,使用自动query_builder
形式指定类的实体管理器来填充选项的方法
在您的情况下,首先创建一个Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList
:
<?php
namespace AppBundle\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
class SomeController extends Controller
{
public function someAction(Request $request)
{
$em = $this->getDoctrine()->getManager();
$options = em->getRepository('\AppBundle\Entity\CommunicationOption')
->findAll();
// from here we are making a custom choice loader
$choices = array(); // will hold the indexed labels the user will choose
$mappedUserOptions = array(); // will hold each $option as $label => $option
// we want each $choice as $index => $label, where $value is the index in $choices
foreach($options $as $option) {
$choices[] = $option->getName(); // 0 => 'Some Option Name'
$mappedOptions[$option->getName()] = $option; // 'Some Option Name' => CommunicationOption $option
}
// now I skip the part when you create a form builder for the user then :
$builder = // ... create your user form
$form = $builder->add('userOptions', 'choice', array(
'choice_list' => new ChoiceList(
array_fill(0, count($choices), true), // the checkbox input value will be normalised to string "on", false would be normalised to false
$choices, // labels for the user to choose
),
'expanded' => true,
'multiple' => true,
'required' => false,
'by_reference' => true, // not needed, it is the default
))
->getForm();
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
// get an array of selected labels
$userOptions = $form->get('userOptions')->getData(); // array('Some User Option', 'Some Other Option')
// remap the options to to data
$selectedUserOptions = array(); // CommunicationOption[]
foreach ($userOptions as $choice) {
$selectedUserOptions[] = $mappedOptions[$choice];
}
$user = $form->get('user')->getData();
$user->setOptions($selectedUserOptions);
// ... persists and flush
// you could redirect somewhere else
}
// return a response
}
}
但是我建议升级到symfony 2.7甚至更好2.8。
// Just copy-pasted your example before edit :
$builderInterface
->add('userOptions', 'entity', array(
'class' => 'Bundle\Entity\Option',
'expanded' => true,
'multiple' => true,
'required' => false,
'query_builder' => null, // omit it will load all entity by default
'by_reference' => true, // not needed
// Using new option introduced in 2.7 see the [doc](http://symfony.com/doc/2.7/reference/forms/types/choice.html#choice-value)
'choice_value' => 'on', // this only should make the trick
))
;
答案 1 :(得分:2)
我知道的旧线程。但这是Google排名最高的,所以我想更新我的解决方案。我认为这非常方便,您不需要那么多的代码即可接受答案
The image “http://localhost:3000/” cannot be displayed because it contains errors.
此代码来自Symfony 4.4
希望其他人可以安全地进行一些Google查询
答案 2 :(得分:1)
我与symfony3
合作。这是它的工作原理
->add('aptitudes', EntityType::class, array( //change this line
'class' => 'BackendBundle:Aptitudes', //change this line
'expanded' => true,
'multiple' => true,
'required' => false,
'query_builder' => null,
'by_reference' => true,
))