How do I apply a filter to a field element with the contents of an array?
For example:
$this->add(
"name" => "tags",
"type" => "text",
"filter" => array(
array("name" => "StripTags"),
array("name" => "StringTrim")
)
);
$tags[0] = "PHP";
$tags[1] = "CSS";
If I attempt to filter I receive an error saying a scalar object is excepted, array given.
This isn't really possible at this time. Your best bet is to use a Callback filter and filter each Item individually. Something like this
$this->add(
"name" => "tags",
"type" => "text",
"filter" => array(
array("name" => "Callback", "options" => array(
"callback" => function($tags) {
$strip = new \Zend\Filter\StripTags();
$trim = new \Zend\Filter\StringTrim();
foreach($tags as $key => $tag) {
$tag = $strip->filter($tag);
$tag = $trim->filter($tag);
$tags[$key] = $tag;
}
return $tags;
}))
)
);
I realize this is old but you can specify the input type as ArrayInput and InputFilter will handle it as expected:
"name" => "tags",
"type" => "Zend\\InputFilter\\ArrayInput", // Treat this field as an array of inputs
"filter" => array(
array("name" => "StripTags"),
array("name" => "StringTrim")
)
I've made a CollectionValidator that applies an existing validator to all items in an array.
I'm using it with Apigility as such:
'input_filter_specs' => [
'Api\\Contact\\Validator' => [
[
'name' => 'addresses',
'required' => false,
'filters' => [],
'validators' => [
[
'name' => 'Application\\Validator\\CollectionValidator',
'options' => ['validator' => 'Api\\Address\\Validator']
]
],
'description'=> 'List of addresses for contact'
],
[
'name' => 'birthdate',
# ...
]
],
]
I'm not sure if this is how you would use a validator inside a controller, but probably something like this:
new Collection(array('validator' => 'Zend\Validator\CreditCard'))
It returns validation_messages per index. Let's say it was REST POST request to create a contact, it indicates that the second address contains an error in the zipcode field.
{
"detail": "Failed Validation",
"status": 422,
"title": "Unprocessable Entity",
"type": "http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html",
"validation_messages": {
"addresses": {
"1": {
"zipcode": {
"notAlnum": "The input contains characters which are non alphabetic and no digits"
}
}
},
"birthdate": {
"dateInvalidDate": "The input does not appear to be a valid date"
}
}
}
The Collection validator:
<?php
namespace Application\Validator;
class Collection extends \Zend\Validator\AbstractValidator implements \Zend\ServiceManager\ServiceLocatorAwareInterface {
protected $serviceLocator;
protected $em;
protected $messages;
protected $options = array(
'validator' => null
);
public function setServiceLocator(\Zend\ServiceManager\ServiceLocatorInterface $serviceLocator) {
$this->serviceLocator = $serviceLocator->getServiceLocator();
}
public function getServiceLocator() {
return $this->serviceLocator;
}
public function isValid($array) {
$inputFilterManager = $this->getServiceLocator()->get('inputfiltermanager');
$validatorName = $this->getOption('validator');
$this->messages = [];
$isvalid = true;
foreach($array as $index => $item) {
$inputFilter = $inputFilterManager->get($validatorName);
$inputFilter->setData($item);
$isvalid = $isvalid && $inputFilter->isValid($item);
foreach($inputFilter->getMessages() as $field => $errors) {
foreach($errors as $key => $string) {
$this->messages[$index][$field][$key] = $string;
}
}
}
return $isvalid;
}
public function getMessages() {
return $this->messages;
}
}
Current limitations:
I had a very simular issue and I was able to solve it with Zend\Form\Element\Collection.
With the Collection Element I was able to validate inputs that looks like
$post = [
[
'idUser' => 1,
'address' => 'foo street',
],
[
'idUser' => 2,
'address' => 'bar street',
],
];
For a more detailed explanation check out the Zend Documentation and this working example
