getInputFilterSpecification() called twice for the same fieldset

[buonaparte]

Code is explained here:

http://stackoverflow.com/questions/19103039/zf2-fieldset-getinputfilterspecification-gets-called-twice

Debugging:

Zend\Form\Form Class:

line: ~769:

 if ($fieldset instanceof InputFilterProviderInterface) {
     var_dump($fieldset->getName().'1');
     foreach ($fieldset->getInputFilterSpecification() as $name => $spec) {

line ~815:

 // Create an input filter based on the specification returned from the fieldset
 var_dump($childFieldset->getName().'2');
 $spec   = $childFieldset->getInputFilterSpecification();

Output:

string(7) "reward2" string(7) "reward1"

So first the filters for RewardFieldset are loaded as being a child fieldset. And then again as being a base fieldset.

[Nowicki]

I wrote about this few days ago #5166. There is also a simple form example.

[Maks3w]

Duplicate #5050