在ZF3中,我创建了一个包含两个字段的表单:text和url。用户只能填写其中一个,并且必须填写至少一个。
想象一下:可以放置网站的内容或网站的网址。该表单可用于从网站或文本中获取某些数据。
我准备了两个验证器类。每个输入一个。这些类从context参数获取另一个的输入值。 StringLength验证器用于两个字段。
这种方法几乎没问题,但是当两个字段都提交为空时,问题就出现了。然后数据确实通过了验证,而它应该没有。
如果出现此问题,则字段required
会变为false。
当我将它们切换为true时,需要两个字段,但我只想要一个字段。
因此,目标是当两个字段都为空时,验证结果将变为false。然后应该出现唯一的一条消息。我的意思是或多或少这样的消息:One of fields must be filled out.
不是'要求'消息。
这里是表单类和两个验证程序类。
<?php
namespace Application\Filter;
use Application\Form\Test as Form;
use Application\Validator\Text;
use Application\Validator\Url;
use Zend\InputFilter\InputFilter;
class Test extends InputFilter
{
public function init()
{
$this->add([
'name' => Form::TEXT,
'required' => false,
'validators' => [
['name' => Text::class],
],
]);
$this->add([
'name' => Form::URL,
'required' => false,
'validators' => [
['name' => Url::class],
],
]);
}
}
<?php
namespace Application\Validator;
use Zend\Validator\StringLength;
use Zend\Validator\ValidatorInterface;
class Text implements ValidatorInterface
{
protected $stringLength;
protected $messages = [];
public function __construct()
{
$this->stringLengthValidator = new StringLength();
}
public function isValid($value, $context = null)
{
if (empty($context['url'])) {
$this->stringLengthValidator->setMin(3);
$this->stringLengthValidator->setMax(5000);
if ($this->stringLengthValidator->isValid($value)) {
return true;
}
$this->messages = $this->stringLengthValidator->getMessages();
return false;
}
if (!empty($value)) return false;
}
public function getMessages()
{
return $this->messages;
}
}
<?php
namespace Application\Validator;
use Zend\Validator\StringLength;
use Zend\Validator\ValidatorInterface;
class Url implements ValidatorInterface
{
const ERROR_NOT_ALLOWED_STRING = 'string-not-allowed';
protected $stringLength;
protected $messages = [
self::ERROR_NOT_ALLOWED_STRING => 'Only one of text and url field may by filled.',
];
public function __construct()
{
$this->stringLengthValidator = new StringLength();
}
public function isValid($value, $context = null)
{
if (empty($context['text'])) {
$this->stringLengthValidator->setMin(3);
$this->stringLengthValidator->setMax(500);
if ($this->stringLengthValidator->isValid($value)) {
return true;
}
$this->messages = $this->stringLengthValidator->getMessages();
return false;
}
if (!empty($value)) return false;
}
public function getMessages()
{
return $this->messages;
}
}
我使用了来自@Crisp的建议,并且必须在代码中进行一些修正。添加了返回和消息处理。工作代码如下:
<?php
namespace Application\Filter;
use Application\Form\Test as Form;
use Application\Validator\Text;
use Application\Validator\Url;
use Zend\InputFilter\InputFilter;
class Test extends InputFilter
{
public function init()
{
$this->add([
'name' => Form::TEXT,
'required' => false,
'allow_empty' => true,
'continue_if_empty' => true,
'validators' => [
['name' => Text::class],
],
]);
$this->add([
'name' => Form::URL,
'required' => false,
'allow_empty' => true,
'continue_if_empty' => true,
'validators' => [
['name' => Url::class],
],
]);
}
}
<?php
namespace Application\Validator;
use Zend\Validator\StringLength;
use Zend\Validator\ValidatorInterface;
class Text implements ValidatorInterface
{
protected $stringLength;
protected $messages = [];
public function __construct()
{
$this->stringLengthValidator = new StringLength();
}
public function isValid($value, $context = null)
{
if (empty($context['url'])) {
if (empty($value)) return false;
$this->stringLengthValidator->setMin(3);
$this->stringLengthValidator->setMax(5000);
if ($this->stringLengthValidator->isValid($value)) {
return true;
}
$this->messages = $this->stringLengthValidator->getMessages();
return false;
}
if (!empty($value)) return false;
return true;
}
public function getMessages()
{
return $this->messages;
}
}
<?php
namespace Application\Validator;
use Zend\Validator\StringLength;
use Zend\Validator\ValidatorInterface;
class Url implements ValidatorInterface
{
const ERROR_NOT_ALLOWED_STRING = 'string-not-allowed';
const ERROR_EMPTY_FIELDS = 'empty-fields';
protected $stringLength;
protected $messages = [
self::ERROR_NOT_ALLOWED_STRING => 'Only one of text and url field may be filled out.',
];
public function __construct()
{
$this->stringLengthValidator = new StringLength();
}
public function isValid($value, $context = null)
{
if (empty($context['text'])) {
if (empty($value)) {
$this->messages = [
self::ERROR_EMPTY_FIELDS => 'One of the fields must be filled out.',
];
return false;
}
$this->stringLengthValidator->setMin(3);
$this->stringLengthValidator->setMax(500);
if ($this->stringLengthValidator->isValid($value)) {
return true;
}
$this->messages = $this->stringLengthValidator->getMessages();
return false;
}
if (!empty($value)) return false;
return true;
}
public function getMessages()
{
return $this->messages;
}
}
答案 0 :(得分:1)
为确保验证程序始终运行,即使是空值,也需要在输入规范中添加allow_empty
和continue_if_empty
选项。否则,对于任何非required
的值,都会跳过验证。
以下组合应该有效
class Test extends InputFilter
{
public function init()
{
$this->add([
'name' => Form::TEXT,
'required' => false,
'allow_empty' => true,
'continue_if_empty' => true,
'validators' => [
['name' => Text::class],
],
]);
$this->add([
'name' => Form::URL,
'required' => false,
'allow_empty' => true,
'continue_if_empty' => true,
'validators' => [
['name' => Url::class],
],
]);
}
}
该组合应确保在遇到空值时应用验证器。
Rob Allen(@akrabat)写了一篇有用的博客文章,详细介绍了值得加入书签的组合akrabat.com/zend-input-empty-values/