传递到选择字段的实体必须进行管理 [英] Entities passed to the choice field must be managed
问题描述
我创建一个新对象并将其绑定到表单.用户填写表格并进入预览页面.我将用户响应存储在会话中.
I create a new object and bind it to a form. The user fills out the form and goes to a preview page. I store the user responses in the session.
当用户回去编辑表单时，我尝试从会话中重新加载对象时，问题出现了.我得到了:
The problem crops up when I try to reload the object from the session when the user goes back to edit the form. I get :
错误:必须管理传递给选择字段的实体.
Error: the Entities passed to the choice field must be managed.
任何人都知道我可能要去哪里了吗?这是控制器的代码.
Anyone have an idea of where i might be going wrong? Heres the code for the controllers.
public function previewdealAction(Request $request){
$session = $this->getRequest()->getSession();
$coupon = $session->get('coupon');
$form = $this->createForm(new CouponType(), $coupon);
if ($request->getMethod() == 'POST') {
//bind the posted form values
$form->bindRequest($request);
//once a valid form is submitted ...
if ($form->isValid()){
//Proceed to Previewing deal
$file = $coupon->getImage();
$file->upload();
$session->set('coupon', $coupon);
$repository = $this->getDoctrine()
->getRepository('FrontendUserBundle:Coupon');
$coupons = $repository->findAll();
return $this->render('FrontendHomeBundle:Merchant:dealpreview.html.twig', array('coupon'=>$coupon, 'coupons'=>$coupons));
}
}
}
public function builddealAction(Request $request){
$em = $this->get('doctrine')->getEntityManager();
$user = $this->container->get('security.context')->getToken()->getUser();
//check for a coupon session variable
$session = $this->getRequest()->getSession();
$coupon = $session->get('coupon');
//If coupon is not set
if($coupon == NULL){
$coupon = new Coupon();
$date = new \DateTime(date("Y-m-d H:i:s"));
$coupon->setStartdate($date);
$coupon->setPosterid($user);
$session->set('coupon', $coupon);
}
$form = $this->createForm(new CouponType(), $coupon);
return $this->render('FrontendHomeBundle:Merchant:builddeal.html.twig', array(
'form' => $form->createView(),
));
}
-
namespace Frontend\HomeBundle\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilder;
class CouponType extends AbstractType {
public function buildForm(FormBuilder $builder, array $options) {
$builder->add('couponname', 'text');
$builder->add('description', 'textarea');
$builder->add('price', 'money', array('currency' => 'USD'));
$builder->add('originalprice', 'money', array('currency' => 'USD'));
$builder->add('maxlimit', 'integer');
$builder->add('maxper', 'integer');
$builder->add('startdate', 'date', array(
'years' => array(2011, 2012, 2013, 2014),
));
$builder->add('duration', 'choice', array(
'choices' => array(
'3' => 3,
'7' => 7,
'14' => 14,
'30' => 30,
'60' => 60,
'90' => 90,
),
'expanded' => false,
'multiple' => false,
));
$builder->add('expirationdate', 'choice', array(
'choices' => array(
'30' => 30,
'60' => 60,
'90' => 90,
'180' => 180,
),
'expanded' => false,
'multiple' => false,
));
$builder->add('tip', 'integer');
$builder->add('salestax', 'choice', array(
'choices' => array(
'included' => 'Sales tax is included and will be remitted BY YOU at the appropriate tax jurisdiction',
'exempt' => 'Sales tax is exempt according to seller\'s tax jurisdiction',
'collected' => 'Sales tax will be collected BY YOU at time of deal redemption',
),
'expanded' => true,
'multiple' => false,
));
$builder->add('signature', 'text');
$builder->add('city', 'entity', array(
'class' => 'Frontend\\UserBundle\\Entity\\Cities',
'expanded' => false,
'multiple' => false,
));
$builder->add('category', 'entity', array(
'class' => 'Frontend\\UserBundle\\Entity\\Category',
'expanded' => false,
'multiple' => false,
));
$builder->add('address', new AddressType());
$builder->add('image', new DocumentType());
$builder->add('maxper', 'choice', array(
'choices' => array(
'1' => 1,
'2' => 2,
'3' => 3,
'4' => 4,
'5' => 5,
'6' => 6,
'7' => 7,
'8' => 8,
'9' => 9,
'10' => 10,
),
'expanded' => false,
'multiple' => false,
));
}
public function getDefaultOptions(array $options) {
return array(
'data_class' => 'Frontend\UserBundle\Entity\Coupon',
);
}
public function getName()
{
return 'user';
}
}
这是优惠券类型类别
推荐答案
我遇到了同样的问题-我正在使用getData()从表单中检索数据并将其存储在会话中.稍后，在重定向之后，我试图使用setData()重新填充相同格式的另一个实例.
I was experiencing the same problem - I was retrieving data from a form using getData() and storing in the session. Later on, after a redirect, I was attempting to repopulate another instance of the same form using setData().
我对本机字段没有任何问题.但是，当我的表单包含一个实体时，我会收到相同的可怕消息必须管理传递给选择字段的实体".
I experienced no issues with native fields. However, when my form included an entity I was receiving the same dreaded message "Entities passed to the choice field must be managed".
经过一番摸索之后，这个问题表明它非常简单(不是全部吗?).重定向后，实体已分离；解决方案就是使用EntityManager::merge()将实体重新包含到EntityManager中，从而将实体恢复为托管对象:)
After some head scratching the issue revealed itself to be pretty straightforward (aren't they all?). After a redirect, the entity has become detached; the solution is simply to re-include the entity into the EntityManager using EntityManager::merge(), thus reinstating the entity as a managed object :)
// an array of form data from session
$entity = $data['my_entity'];
// merge() returns the managed entity
$entity = $this->getDoctrine()->getEntityManager()->merge($entity);
// update the form data array
$data['my_entity'] = $entity;
// Create form with form data
$form = $this->createForm(new MyFormType(), $data);
http://www.doctrine-project.org/api/orm /2.0/doctrine/orm/entitymanager.html
希望这会有所帮助！
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