ZF2 How to validate fields inside fieldset? - validation

Question

I have a field in the form like this:
$this -> add(array(
'type' => 'field-set',
'name' => 'meta_properties',
'options' => array(
'label' => "Meta Properties",
),
'elements' => array(
)
));
$meta_fieldSet = $this -> get('meta_properties');
$meta_fieldSet->add(array(
'name' => 'meta_title',
'attributes' => array(
'type' => 'text',
),
'options' => array(
'label' => 'Title',
),
));
$meta_fieldSet->add(array(
'name' => 'meta_description',
'attributes' => array(
'type' => 'text',
),
'options' => array(
'label' => 'Description',
),
));
$meta_fieldSet->add(array(
'name' => 'meta_keywords',
'attributes' => array(
'type' => 'text',
),
'options' => array(
'label' => 'Keywords',
)
));
And in my input filter class I have
$inputFilter -> add($factory -> createInput(array(
'name' => 'meta_title',
'required' => false,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => 5,
'max' => 150,
),
),
),
)));
$inputFilter -> add($factory -> createInput(array(
'name' => 'meta_description',
'required' => false,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => 5,
'max' => 150,
),
),
),
)));
$inputFilter -> add($factory -> createInput(array(
'name' => 'meta_keywords',
'required' => false,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => 5,
'max' => 150,
),
),
),
)));
It is not validating. How to validate InputFilter?

Answer 1

When creating Fieldsets you need to extend \Zend\Form\Fieldset. Try creating a fieldset like this:
<?php
/**
* Fieldset Example
*/
namespace Module\Form;
use Zend\Form\Fieldset;
use Zend\InputFilter\InputFilterProviderInterface;
use Zend\Stdlib\Hydrator\ClassMethods as ClassMethodsHydrator;
class NewFieldset extends Fieldset implements InputFilterProviderInterface
{
public function __construct()
{
// we want to ignore the name passed and give it our own
parent::__construct('appointment');
// Use the model you are associating with your fieldset here
$this->setHydrator(new ClassMethodsHydrator(false))
->setObject(new MyModel)
->setLabel('My Model');
$this->add(array(
'name' => 'fieldset_item_1',
'type' => 'Select',
'options' => array(
'label' => 'FieldSet Item 1',
)
));
$this->add(array(
'name' => 'fieldset_item_2',
'type' => 'Select',
'options' => array(
'label' => 'FieldSet Item 2',
)
));
}
/**
* Sets up the input filter specification and returns it
*/
public function getInputFilterSpecification()
{
return array(
'fieldset_item_1' => array(
'required' => false,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => 1,
'max' => 100,
),
),
),
),
'fieldset_item_2' => array(
'required' => false,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => 1,
'max' => 100,
),
),
),
),
);
}
}
Then you can use it in your form like this:
$this->add(array(
'type' => 'Zend\Form\Element\Collection',
'name' => 'fieldset',
'options' => array(
'label' => '',
'count' => 1,
'should_create_template' => true,
'allow_add' => true,
'use_as_base_fieldset' => false,
'create_new_objects' => true,
'target_element' => array('type' => 'Module\Form\NewFieldset')
),
));
Now when you perform $form->isValid() in a controller it will validate the fieldset. In addition, you can now make some fancy front-end code to dynamically add and remove fieldsets from the form and they will all get validated.