Php Symfony 2表单生成器自定义选项在twig中提供

我想这样做：

$builder->add('firstname', 'text', array(
                    'myCustomOption' => 'optionValue'
                ));

{% block form_row -%}
    {{ myCustomOption }}
{%- endblock form_row %}

class MyTextType extends AbstractType
{

    public function getParent()
    {
        return 'text';
    }

    public function getName()
    {
        return 'my_text';
    }

    ....

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver
            ->setDefaults([
                'myOption' => null
            ])
        ;
    }    

    ....
}

因此，我可以在myForm.html.twig中使用

myCustomOption

，如下所示：

$builder->add('firstname', 'text', array(
                    'myCustomOption' => 'optionValue'
                ));

{% block form_row -%}
    {{ myCustomOption }}
{%- endblock form_row %}

class MyTextType extends AbstractType
{

    public function getParent()
    {
        return 'text';
    }

    public function getName()
    {
        return 'my_text';
    }

    ....

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver
            ->setDefaults([
                'myOption' => null
            ])
        ;
    }    

    ....
}

但在这种情况下，我得到：

“myCustomOption”选项不存在。已知选项为：[……]

---

试着这样做：

$builder->add('firstname', 'text', array(
                    'myCustomOption' => 'optionValue'
                ));

{% block form_row -%}
    {{ myCustomOption }}
{%- endblock form_row %}

class MyTextType extends AbstractType
{

    public function getParent()
    {
        return 'text';
    }

    public function getName()
    {
        return 'my_text';
    }

    ....

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver
            ->setDefaults([
                'myOption' => null
            ])
        ;
    }    

    ....
}

服务定义：

acme_demo_bundle.text_type:
    class: Acme\DemoBundle\Form\Type\MyTextType
    tags:
        - { name: form.type, alias: my_text }

用法：

$builder->add('someName', 'my_text', ['myOption' => $value])

---

答案是：类型扩展

它允许扩展所需的表单类型

email/phone/checkbox

或group

text/entity/choice

，甚至扩展所有可用的

表单

。 （请记住，一个元素可以包含几种类型。例如，输入<代码>电子邮件的类型将为<代码>表单、文本、电子邮件）

只需创建扩展类：

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class TextTypeExtension extends AbstractTypeExtension {

    public function getExtendedType() {
        return 'form'; // What type should be extended
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver) {
        // Add optional option - you can also add required options
        // and available values of this option
        $resolver->setOptional(array('myOption'));
    }

     public function buildView(FormView $view, FormInterface $form, array $options) {
        // You can put any logic here
        // For example 'myOption' => 'big' can be transformed to 
        // 'myOption' => '300px'
        if (array_key_exists('myOption', $options)) {
            // Add your option to twig template
            $view->vars['myOption'] = $options['myOption'];
        }
    }

}

services:
    acme_demo_bundle.image_type_extension:
        class: Acme\DemoBundle\Form\Extension\TextTypeExtension
        tags:
            - { name: form.type_extension, alias: form }

$builder->add('MyInput', 'text', array('myOption' => array('whateverYouNeed')));

将类添加为服务：

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class TextTypeExtension extends AbstractTypeExtension {

    public function getExtendedType() {
        return 'form'; // What type should be extended
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver) {
        // Add optional option - you can also add required options
        // and available values of this option
        $resolver->setOptional(array('myOption'));
    }

     public function buildView(FormView $view, FormInterface $form, array $options) {
        // You can put any logic here
        // For example 'myOption' => 'big' can be transformed to 
        // 'myOption' => '300px'
        if (array_key_exists('myOption', $options)) {
            // Add your option to twig template
            $view->vars['myOption'] = $options['myOption'];
        }
    }

}

services:
    acme_demo_bundle.image_type_extension:
        class: Acme\DemoBundle\Form\Extension\TextTypeExtension
        tags:
            - { name: form.type_extension, alias: form }

$builder->add('MyInput', 'text', array('myOption' => array('whateverYouNeed')));

现在您可以做：

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class TextTypeExtension extends AbstractTypeExtension {

    public function getExtendedType() {
        return 'form'; // What type should be extended
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver) {
        // Add optional option - you can also add required options
        // and available values of this option
        $resolver->setOptional(array('myOption'));
    }

     public function buildView(FormView $view, FormInterface $form, array $options) {
        // You can put any logic here
        // For example 'myOption' => 'big' can be transformed to 
        // 'myOption' => '300px'
        if (array_key_exists('myOption', $options)) {
            // Add your option to twig template
            $view->vars['myOption'] = $options['myOption'];
        }
    }

}

services:
    acme_demo_bundle.image_type_extension:
        class: Acme\DemoBundle\Form\Extension\TextTypeExtension
        tags:
            - { name: form.type_extension, alias: form }

$builder->add('MyInput', 'text', array('myOption' => array('whateverYouNeed')));

来源：

---

当我想添加自定义属性时，我将它们放在中，以便在细枝模板中使用

attr.myCustomOption

.hmm。但您只能传递这样的标量值，它们将以html显示。传递数组将引发：

在第326行的表单_div_layout.html.twig中呈现模板（“注意：数组到字符串转换”）时引发异常

如果它是一个数组，您必须使用

for

循环对其进行迭代，您不能只是尝试将其作为字符串进行回显。如果您需要，Twig有一个函数。您想让我为每个可用元素创建私有自定义元素类吗？文本、选择、实体和其他内容@这只是一个例子。这取决于你如何实施它。告诉我如何将其实现到所有现有表单类型。所以我可以使用：

$builder->add（'anyName'，'anyTypeHere'，array（'myOption'=>array（））