Zend3 InputFilter not validating Form - zend-framework

Question

I've found another post (ZF2 InputFilter not validating fieldset) for my issue, but it doesn't helped.
I have a Category Entity and i want to validate the length of the title.
So my Model (without the existing getter and setter)
class Category
{
/**
* #var int
*/
private $id;
/**
* #var string
*/
private $name;
}
My Form for the Category:
class CategoryForm extends Form
{
public function init()
{
$this->setHydrator(new ClassMethods(false));
$this->setObject(new Category());
$this->setInputFilter(new CategoryFilter());
$this->add([
'name' => 'id',
'type' => 'hidden'
]);
$this->add([
'name' => 'name',
'type' => 'text'
]);
$this->add([
'name' => 'submit',
'type' => 'submit'
]);
}
}
And the Filter which currently not working.
class CategoryFilter extends InputFilter
{
public function init()
{
$this->add([
'name' => 'name',
'required' => true,
'filters' => [
['name' => StringTrim::class]
],
'validators' => [
[
'name' => StringLength::class,
'options' => [
'min' => 5
]
]
]
]);
}
}
And if someone needed my addAction in the Controller:
public function addAction()
{
$request = $this->getRequest();
if ($request->isPost()) {
$this->form->setData($request->getPost());
if ($this->form->isValid()) {
$this->mapper->save($this->form->getData());
$this->redirect()->toRoute('categories');
}
}
return [
'form' => $this->form
];
}
In every example which i found, it should be working. But my form is never validated nor filtered (with the trim).
Did i forget something? Why it doesn't work?

Answer 1

So i've changed a little bit.
The Category Form goes to:
class CategoryForm extends Form
{
public function init()
{
$this->add(array(
'type' => CategoryFieldSet::class,
'options' => array(
'use_as_base_fieldset' => true,
),
));
$this->add([
'name' => 'submit',
'type' => 'submit'
]);
}
}
I changed also the Filter
class CategoryFilter extends InputFilter
{
public function __construct()
{
$this->add([
'name' => 'name',
'required' => true,
'filters' => [
['name' => StringTrim::class]
],
'validators' => [
[
'name' => StringLength::class,
'options' => [
'min' => 5
]
]
]
]);
}
}
And after this i defined the FieldSet with the validators:
class CategoryFieldSet extends Fieldset implements InputFilterProviderInterface
{
/**
*
*/
public function init()
{
$this->setHydrator(new ClassMethods(false));
$this->setObject(new Category());
$this->add([
'name' => 'id',
'type' => 'hidden'
]);
$this->add([
'name' => 'name',
'type' => 'text',
]);
}
/**
* Should return an array specification compatible with
* {#link Zend\InputFilter\Factory::createInputFilter()}.
*
* #return array
*/
public function getInputFilterSpecification()
{
$filter = new CategoryFilter();
return $filter->getInputs();
}
}
After changing this i get the expected error message like:
The input is less than 5 characters long