ZF2: allow an empty set of fields, but check if at least one of them is filled

Question

I defined a set of fields for phone numbers. It contains the fields "type" (private, Office mobile ...) and "number". Input filter for the number "required => true":

``

class PhoneFieldset extends BaseFieldset implements InputFilterProviderInterface { public function __construct() { parent::__construct('phones'); $this->setHydrator(new DoctrineHydrator($this->getEntityManager(), 'HtsBase\Entity\Phone')) ->setObject(new Phone()); $this->add(array( 'type' => 'DoctrineORMModule\Form\Element\EntitySelect', 'name' => 'type', 'options' => array( 'label' => 'Type', 'empty_option' => '', 'object_manager' => $this->getEntityManager(), 'target_class' => 'HtsBase\Entity\OptionlistPhoneType', 'property' => 'name', ), 'attributes' => array( #'id' => 'type', 'class' => 'input-medium', ), )); $this->add(array( 'name' => 'number', 'options' => array( 'label' => 'Number', ), 'attributes' => array( 'type' => 'text', #'id' => 'number', 'class' => 'input-medium', 'maxlength' => '25', 'autocomplete' => 'off', ), )); } public function getInputFilterSpecification() { return array( 'type' => array( 'required' => false, ), 'number' => array( 'required' => true, 'filters' => array( array('name' => 'StringTrim'), ), 'validators' => array( array( 'name' => 'StringLength', 'options' => array( 'encoding' => 'UTF-8', 'max' => 25, ), ), ), ), ); } 

``

Can I attach a validator / filter for the whole set of fields? So, if "type" AND "number" is empty, the field does matter, but checks to see if at least one of them is populated?

Answer 1

I found an easy-to-use solution, although I no longer use the form, now I use InputFilter and still need the same stuff. But found an easy solution

AbstractFilterValidator , my own implementation

 abstract class AbstractFilterValidator extends AbstractValidator { /** * Returns true if and only if $value meets the validation requirements * * If $value fails validation, then this method returns false, and * getMessages() will return an array of messages that explain why the * validation failed. * * @param mixed $value * @return bool * @throws Exception\RuntimeException If validation of $value is impossible */ public function isValid($value) { $this->setValue($value); $filter = $this->buildFilter(); $filter->setData($value); if (!$filter->isValid()) { $this->abstractOptions['messages'] = $filter->getMessages(); return false; } return true; } /** * @return array */ public function getMessages() { return $this->abstractOptions['messages']; } /** * @return InputFilter\InputFilter */ abstract protected function buildFilter(); } 

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Old answer

Although you used InputFilterProviderInterface , I used Zend\InputFilter\InputFilter and wanted the same thing as you. If the field set has not been filled, check true .

To do this, I replace isValid following text:

 public function isValid() { $values = array_filter($this->getRawValues()); if (empty($values)) { return true; } return parent::isValid(); } 

It just filters the array from all the empty keys of the array, see docs for information on this. Then check if $values empty, and if so, return true . Otherwise, validators are called.

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Well, I need something else, but I need a decent solution. I still could not find a good one, so I wrote the following code.

 <?php namespace Application\InputFilter; use Zend\InputFilter as ZFI; class InputFilter extends ZFI\InputFilter { private $required = true; /** * @return boolean */ public function isRequired() { return $this->required; } /** * @param boolean $required * * @return $this */ public function setRequired($required) { $this->required = (bool) $required; return $this; } /** * @return bool */ public function isValid() { if (!$this->isRequired() && empty(array_filter($this->getRawValues()))) { return true; } return parent::isValid(); } } 

github gist

Now you can just call setRequired(false) on the InputFilter