Zend Framework 的 2 InputFilter 中有条件地需要 [英] Conditionally required in Zend Framework's 2 InputFilter

问题描述

我正在使用 Zend Framework 2 制作应用程序.我正在使用它的 InputFilter 验证输入.是否有可能有条件地要求一些 Input ?我的意思是我有这样的代码:

I am making an application using Zend Framework 2. I am validating input using it's InputFilter. Is it possible, to make some Inputs required conditionally? I mean I have code like that:

$filter = new \Zend\InputFilter\InputFilter();
$factory = new \Zend\InputFilter\Factory();
$filter->add($factory->createInput(array(
    'name' => 'type',
    'required' => true
)));
$filter->add($factory->createInput(array(
    'name' => 'smth',
    'required' => true
)));

我希望字段 something 是必需的，仅当 type 等于 1 时.有没有内置的方法来做到这一点?还是我应该创建自定义验证器?

I want the field something, to be required, ONLY when type is equal 1. Is there a built-in way to do that? Or should I just create custom validator?

推荐答案

首先，您可能希望从 传递给 Zend 框架 2 验证器的空值

您可以使用回调输入过滤器，如下例所示:

You can use a callback input filter as in following example:

$filter = new \Zend\InputFilter\InputFilter();
$type   = new \Zend\InputFilter\Input('type');
$smth   = new \Zend\InputFilter\Input('smth');

$smth
    ->getValidatorChain()
    ->attach(new \Zend\Validator\NotEmpty(\Zend\Validator\NotEmpty::NULL))
    ->attach(new \Zend\Validator\Callback(function ($value) use ($type) {
        return $value || (1 != $type->getValue());
    }));

$filter->add($type);
$filter->add($smth);

当 smth 的值是一个空字符串并且 type 的值不是 1 时，这基本上会起作用.如果 type 的值为 1，则 smth 必须与空字符串不同.

This will basically work when the value smth is an empty string and the value for type is not 1. If the value for type is 1, then smth has to be different from an empty string.

这篇关于Zend Framework 的 2 InputFilter 中有条件地需要的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！