Question

我正在使用类表继承模式为ZF3模块开发字段集类中的输入过滤器。 ZF3 documentation表示字段集类必须实现Zend\InputFilter\InputFilterProviderInterface，它定义了getInputFilterSpecification()方法。

namespace Contact\Form;

use Zend\Filter;
use Zend\Form\Fieldset;
use Zend\InputFilter\InputFilterProviderInterface;
use Zend\Validator;

class SenderFieldset extends Fieldset implements InputFilterProviderInterface
{
    public function getInputFilterSpecification()
    {
        return [
            'name' => [
                'required' => true,
                'filters'  => [
                    ['name' => Filter\StringTrim::class],
                ],
                'validators' => [
                    [
                        'name' => Validator\StringLength::class,
                        'options' => [
                            'min' => 3,
                            'max' => 256
                        ],
                    ],
                ],
            ],
            'email' => [
                'required' => true,
                'filters'  => [
                    ['name' => Filter\StringTrim::class],
                ],
                'validators' => [
                    new Validator\EmailAddress(),
                ],
            ],
        ];
    }
}

这适用于独立的字段集类，但如果我有一个字段集扩展另一个字段集，则表单仅使用来自子字符的getInputFilterSpecification()方法。

namespace Contact\Form;

use Zend\Filter;
use Zend\Form\Fieldset;
use Zend\InputFilter\InputFilterProviderInterface;
use Zend\Validator;

class PersonFieldset extends Fieldset implements InputFilterProviderInterface
{
    public function getInputFilterSpecification()
    {
        return [
            'name' => [
                'required' => true,
                'filters'  => [
                    ['name' => Filter\StringTrim::class],
                ],
                'validators' => [
                    [
                        'name' => Validator\StringLength::class,
                        'options' => [
                            'min' => 3,
                            'max' => 256
                        ],
                    ],
                ],
            ],
        ];
    }
}

class SenderFieldset extends PersonFieldset implements InputFilterProviderInterface
{
    public function getInputFilterSpecification()
    {
        return [
            'email' => [
                'required' => true,
                'filters'  => [
                    ['name' => Filter\StringTrim::class],
                ],
                'validators' => [
                    new Validator\EmailAddress(),
                ],
            ],
        ];
    }
}

由于getInputFilterSpecification()方法只是一个return语句的集合，我想我可以在子方法中添加对父方法的调用，但这似乎不起作用：

// in child:

    public function getInputFilterSpecification()
    {

        parent::getInputFilterSpecification();

    // ...

如何从子字段集中获取getInputFilterSpecification()方法以从父级继承getInputFilterSpecification()方法中的代码？

Answer 1

感谢Dolly Aswin的评论，以下是答案：

namespace Contact\Form;

use Zend\Filter;
use Zend\Form\Fieldset;
use Zend\InputFilter\InputFilterProviderInterface;
use Zend\Validator;

class PersonFieldset extends Fieldset implements InputFilterProviderInterface
{
    public function getInputFilterSpecification()
    {
        return [
            'name' => [
                'required' => true,
                'filters'  => [
                    ['name' => Filter\StringTrim::class],
                ],
                'validators' => [
                    [
                        'name' => Validator\StringLength::class,
                        'options' => [
                            'min' => 3,
                            'max' => 256
                        ],
                    ],
                ],
            ],
        ];
    }
}

class SenderFieldset extends PersonFieldset implements InputFilterProviderInterface
{
    public function getInputFilterSpecification()
    {

        // get input filter specifications from parent class
        return parent::getInputFilterSpecification();

        return [
            'email' => [
                'required' => true,
                'filters'  => [
                    ['name' => Filter\StringTrim::class],
                ],
                'validators' => [
                    new Validator\EmailAddress(),
                ],
            ],
        ];
    }
}

如何为ZF3中的嵌套字段集继承getInputFilterSpecification方法

1 个答案: