forms - Symfony3 允许额外字段

Question

我正在尝试向表单添加两个额外的字段:

$this->contactForm = $this->createFormBuilder($contact, array('allow_extra_fields' =>true))
->add('Nom',        TextType::class)
->add('Prenom',     TextType::class)
->add('Telephone',  TextType::class, array(
    'label' => 'Téléphone'))
->add('Email',      TextType::class)
->add('Ajouter',    SubmitType::class)
->getForm();

但我收到此错误:

Neither the property "Nom" nor one of the methods "getNom()", "nom()", "isNom()", "hasNom()", "__get()" exist and have public access in class "CommonBundle\Entity\Contact".

如何防止出现此错误？

Answer 1

allow_extra_fields 用于提交表单时，它允许表单中未指定的字段也可以在表单中传递，例如，如果提交时它包含“foob​​ar' 它不会抛出“表单不应包含额外字段”的错误。

由于您的实体中未映射“Nom”，因此您需要指定该字段未映射。见 http://symfony.com/doc/current/reference/forms/types/form.html#mapped供引用

$this->contactForm = $this->createFormBuilder($contact, array('allow_extra_fields' =>true))
->add('Nom',        TextType::class, array('mapped'=>false))
->add('Prenom',     TextType::class)
->add('Telephone',  TextType::class, array(
    'label' => 'Téléphone'))
->add('Email',      TextType::class)
->add('Ajouter',    SubmitType::class)
->getForm();