trait getInputFilter

AbstractForm.php

<?php

namespace Core\Form;

use Zend\Form\Form;

abstract class AbstractForm extends Form
{
    use \Core\Traits\getInputFilter;
}

Form.php

<?php

namespace Clinica\Form;

use Core\Form\AbstractForm;

class Especie extends AbstractForm
{

    public function __construct()
    {
        parent::__construct('especie');
        $this->setInputFilter($this->getInputFilter());
        $this->setAttribute('method', 'post');

        $this->add(array(
            'name' => 'id',
            'type' => 'hidden'
        ));

        $this->add(array(
                'name' => 'nome',
                'type' => 'text',
                'options' => array(
                    'label' => 'Nome'
                ),
                'attributes' => array(
                    'placeholder' => 'Nome da espécie'
                )
            )
        );
    }

}

getInputFilter.php

<?php

namespace Core\Traits;

use \RuntimeException;

trait getInputFilter
{

    protected $inputFilter;

    public function getInputFilter()
    {
        if (null == $this->inputFilter) {
            $filter = $this->getInputFilterClassName();
            if (!class_exists($filter)) throw new RuntimeException ("Filter \"{$filter}\" not found");
            $this->inputFilter = new $filter();
        }
        return $this->inputFilter;
    }

    private function getInputFilterClassName()
    {
        $classParts = explode('\\', get_called_class());
        $classParts[1] = 'Filter';
        return implode('\\', $classParts);
    }

}

InputFilter.php

<?php

namespace Clinica\Filter;

use Zend\InputFilter\InputFilter;

class Especie extends InputFilter
{

    public function __construct()
    {

        $this->add(
            array(
                'name' => 'nome',
                'required' => true,
                'filters' => array(
                    array('name' => 'StripTags'),
                    array('name' => 'StringTrim')
                ),
                'validators' => array(
                    array(
                        'name' => 'NotEmpty',
                        'options' => array(
                            'messages' => array('isEmpty' => 'Digite um nome!')
                        )
                    )
                )
            )
        );

    }

}