使用额外字段验证symfony2表单

I'm working on a symfony2 backend for a backbone.js application. I have my model and form.

我正在为backbone.js应用程序开发symfony2后端。我有自己的模特和形式。

However, backbone.js sends some additional properties to the REST API when it's creating/updating a model and I'm struggling to get the form to validate.

但是，在创建/更新模型时，backbone.js会向REST API发送一些其他属性，而我正在努力让表单进行验证。

How can I get a form in symfony2 to accept additional data, or how can I drop particular keys before binding data to a form?

如何在symfony2中获取表单以接受其他数据，或者如何在将数据绑定到表单之前删除特定键？

4 个解决方案

#1

To get Symfony2 accept additional data, add the additional fields to your form builder, and set their property_path option to false:

要使Symfony2接受其他数据，请将其他字段添加到表单构建器，并将其property_path选项设置为false：

Example:

例：

$builder
    ->add('my_additional_field', 'checkbox', array(
        'mapped' => false,
    ));

You don't need to drop the keys before binding the data, they'll be ignored anyway.

在绑定数据之前不需要删除密钥，无论如何它们都将被忽略。

#2

You should use option "allow_extra_fields".

您应该使用选项“allow_extra_fields”。

public function setDefaultOptions(OptionsResolverInterface $resolver)
{
        $resolver->setDefaults(
        array(
            'allow_extra_fields' => true
        )
    );
}

#3

property_path is now deprecated in sf 2.1, use "mapped" instead

property_path现在在sf 2.1中已弃用，请改用“mapped”

$builder
    ->add("firstName", "text")
    ->add("lastName", "text")
    ->add("tac", "checkbox", array(
        "mapped" => false
    )
);

#4

You can listen for FormEvents::BIND_CLIENT_DATA (or FormEvents::PRE_BIND if you are using 2.1 dev) event listener and add/remove fields. See this cookbook entry.

您可以侦听FormEvents :: BIND_CLIENT_DATA（如果使用2.1 dev，则为FormEvents :: PRE_BIND）事件侦听器和添加/删除字段。请参阅此食谱条目。

#1