我对Symfony2中的表单有疑问。我尝试使用预先填充的数据来填充表单,但它始终保持空白。
public function updateAction($id,Request $request)
{
$contact = $this->getDoctrine()
->getManager()
->getRepository('HPContactBundle:Contact')
->findById($id);
$form = $this->createForm(new ContactType(), $contact);
return $this->render('HPContactBundle:Contact:update.html.twig',array(
'form' => $form->createView()
));
}
错误:
The form's view data is expected to be an instance of class HP\ContactBundle\Entity\Contact, but is a(n) array. You can avoid this error by setting the "data_class" option to null or by adding a view transformer that transforms a(n) array to an instance of HP\ContactBundle\Entity\Contact.
和
at Form ->setData (array(object(Contact))) in vendor/symfony/symfony/src/Symfony/Component/Form/Form.php at line 488
我不知道我错过了什么?你有什么线索吗?
提前thx。答案 0 :(得分:2)
findBy*()
返回一组实体。使用findOneById()
,它只返回一个实体。