Populating Form Data in ZF2 when using Fieldsets - zend-form

Question

I am currently playing around with ZF2 beta 4 and I seem to be stuck when i try to use fieldsets within a form and getting the data back into the form when the form is submitted. I am not sure if I am not setting the input filters right for fieldsets or I am missing something. For example, I have the following (simplified to make it clear):
Controller
public function indexAction(){
$form = new MyForm();
$request = $this->getRequest();
if ($request->isPost()) {
$form->setData($request->post());
if ($form->isValid()) {
//Do something
print_r($form->getData()); //for debug
}
}
return array('form' => $form);
}
MyForm.php
class MyForm extends Form
{
public function __construct()
{
parent::__construct();
$this->setName('myForm');
$this->setAttribute('method', 'post');
$this->add(array(
'name' => 'title',
'attributes' => array(
'type' => 'text',
'label' => 'Title',
),
));
$this->add(new MyFieldset('myfieldset'));
//setting InputFilters here
$inputFilter = new InputFilter();
$factory = new InputFactory();
$inputFilter->add($factory->createInput(array(
'name' => 'title',
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
)));
//Now add fieldset Input filter
foreach($this->getFieldsets() as $fieldset){
$fieldsetInputFilter = $factory->createInputFilter($fieldset->getInputFilterSpecification());
$inputFilter->add($fieldsetInputFilter,$fieldset->getName());
}
//Set InputFilter
$this->setInputFilter($inputFilter);
}
}
MyFieldset.php
class MyFieldset extends Fieldset implements InputFilterProviderInterface{
public function __construct($name)
{
parent::__construct($name);
$factory = new Factory();
$this->add($factory->createElement(array(
'name' => $name . 'foo',
'attributes' => array(
'type' => 'text',
'label' => 'Foo',
),
)));
}
public function getInputFilterSpecification(){
return array(
'foo' => array(
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
),
);
}
}
I am able to output the form as expected and I end up with two input elements named 'title' and 'myfieldsetfoo' (the name given when outputing with the ViewHelper). So of course when I submit the raw post will show values for 'title' and 'myfieldsetfoo'. However, when I use SetData() the values for the field set are not being populated (although I can see the values in the raw post object). Instead, examining the output of '$form->getData()' I receive:
Array(
[title] => Test,
[myfieldset] => Array(
[foo] =>
)
)
What am I missing? What do I need to do so that ZF2 understands how to populate the fieldset?
Thanks for any help, this is driving me crazy.

Answer 1

Why I do is concatenate InputFilter so I could handle the whole HTML form array posted.
<form method="POST">
<input type="text" name="main[name]" />
<input type="text" name="main[location]" />
<input type="text" name="contact[telephone]" />
<input type="submit" value="Send" />
</form>
This will create an array posted like
post["main"]["name"]
post["main"]["location"]
post["contact"]["telephone"]
Filtered and validated with:
use Zend\InputFilter\InputFilter;
use Zend\InputFilter\Factory as InputFactory;
$post = $this->request->getPost();
$inputFilter = new InputFilter();
$factory = new InputFactory();
// $post["main"]
$mainFilter = new InputFilter();
$mainFilter->add($factory->createInput(array(
'name' => 'name',
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => 1,
'max' => 100,
),
),
),
)));
$mainFilter->add($factory->createInput(array(
'name' => 'location',
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => 1,
'max' => 100,
),
),
),
)));
$inputFilter->add($mainFilter, "main");
// $post["contact"]
$contactFilter = new InputFilter();
$contactFilter->add($factory->createInput(array(
'name' => 'name',
'required' => true,
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => 1,
'max' => 100,
),
),
),
)));
$contactFilter->add($mainFilter, "contact");
//Set posted data to InputFilter
$inputFilter->setData($post->toArray());
http://www.unexpectedit.com/zf2/inputfilter-validate-and-filter-a-form-data-with-fieldsets

Answer 2

I think you forgot to prepare your form in the controller:
return array('form' => $form->prepare());
This will rename the "name" field of your fieldset to "myfieldset[foo]", so you don't have to prepend the fieldsets name on your own.
Just use
'name' => 'foo'
instead of
'name' => $name . 'foo'
in your fieldset class.

Answer 3

I think the problem is that you declare a new form in your controller. And that clear the previous form.
$form = new MyForm();
I use the Service Manager to declare the form and filters.
And then in the controller I do:
$form = $this->getServiceLocator()->get('my_form');
That way I always get the object I want
Update
I no longer use service manager to call forms. I just call a new form and issue $form->setData($data);
The source for the data can also be entity though then I would issue: $form->bind($entity)