Inputfilter getValues() returns the field which is not in input data

[weierophinney]

$specs =  array(
    'title' => array(
        'name'       => 'title',
        'filters' => array(
            array(
                'name' => 'Zend\Filter\StringToLower',
            ),
        ),
    ),
);

$inputFilterFactory = new \Zend\InputFilter\Factory();
$inputFilter = $inputFilterFactory->createInputFilter($specs);
$data = array(
    'title' => 'TEST',
);
$inputFilter->setData($data);
var_dump($inputFilter->getValues());

Expected Output:

array(1) {
  ["title"]=>
  string(3) "test"
}

$data = array(
    'xyz' => 'something',
);
$inputFilter->setData($data);
var_dump($inputFilter->getValues());

Unexpected (or it is intentional?) Output:

array(1) {
  ["title"]=> NULL
}

---

Originally posted by @metanav at https://github.com/zendframework/zend-inputfilter/issues/66

[weierophinney]

Related to https://github.com/zendframework/zf2/issues/7440

---

Originally posted by @Maks3w at https://github.com/zendframework/zend-inputfilter/issues/66#issuecomment-137972236

[weierophinney]

One possible option is to add an argument to getValues() for to return all inputs or only the inputs with data set.

---

Originally posted by @Maks3w at https://github.com/zendframework/zend-inputfilter/issues/66#issuecomment-137972377

[weierophinney]

Another option is add a new method for return only the fields with data (method name is more expressive rather than arguments values).

---

Originally posted by @Maks3w at https://github.com/zendframework/zend-inputfilter/issues/66#issuecomment-137972587

[weierophinney]

That would not stop input filter to do filtering of the input which is not set. The new method would just do one more filtering of unset data.

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Originally posted by @metanav at https://github.com/zendframework/zend-inputfilter/issues/66#issuecomment-137973363