Issue with Zend Form hydrator Classmethod not binding properly to object entity

Question

I was trying to bind entity Contact with default values (using getters) to the form ContactForm using Classmethod() hydrator.

The problem is when I then call setData with a set of values, the Hydrator was not able to merge the default values and the set of values but instead it returned only the set of values. Kindly find below an excerpt of my codes.

<?php
// My contact form
namespace Application\Form;

use Zend\Form\Form;
use Zend\InputFilter\InputFilter;
use Zend\InputFilter\InputFilterInterface;

class Contact extends Form
{
    public function __construct($name = 'contact')
    {
        parent::__construct($name);

        $this->add(array(
            'name' => 'name',
            'options' => array(
                'label' => 'Your name',
            ),
            'type'  => 'Text',
        ));
        $this->add(array(
            'name' => 'subject',
            'options' => array(
                'label' => 'Subject',
            ),
            'type'  => 'Text',
        ));
        $this->add(new \Zend\Form\Element\Csrf('security'));
        $this->add(array(
            'name' => 'send',
            'type'  => 'Submit',
            'attributes' => array(
                'value' => 'Submit',
            ),
        ));

        // We could also define the input filter here, or
        // lazy-create it in the getInputFilter() method.
    }


    public function getInputFilter()
    {
        if (!$this->filter) {
            $inputFilter = new InputFilter();
            $inputFilter->add(array('name' => 'name', 'required' => false));
            $inputFilter->add(array('name' => 'subject', 'required' => false));
            $this->filter = $inputFilter;
        }
        return $this->filter;
    }
}

Here's my entity

class Contact
{

    protected $name;
    protected $subject;

    /**
     * @param mixed $name
     */
    public function setName($name)
    {
        $this->name = $name;
    }

    /**
     * @return mixed
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * @param mixed $subject
     */
    public function setSubject($subject)
    {
        $this->subject = $subject;
    }

    /**
     * @return mixed
     */
    public function getSubject()
    {
        // Trying to set a default value
        if (null == $this->subject) {
            return 'default subject';
        }
        return $this->subject;
    }

}

Here I test it in a controller action

class TestController extends AbstractActionController
{
    public function indexAction()
    {
        $data = array(
            'name' => 'myName'
        );

        $class = '\Application\Entity\Contact';
        $contact = new $class;

        $form = new \Application\Form\Contact();
        $form->setHydrator(new ClassMethods(false));
        $form->bind($contact);
        $form->setData($data);

        if ($form->isValid()) {
            var_dump($form->getData());
        }
        die("end");
    }
}

I wanted to get

object(Application\Entity\Contact)[---]
    protected 'name' => string 'myName' (length=6)
protected 'subject' => string 'default subject' ...

But instead I got this result

object(Application\Entity\Contact)[---]
  protected 'name' => string 'myName' (length=6)
  protected 'subject' => null

Any idea how to make Classmethod() extract getter values from bind and merge the remaining data on setData()?

Ujjwal Ojha · Accepted Answer · 2014-02-18 12:57:55Z

2

That is actually quiet easy to set the default value. Define the default value in the entity:

class Contact
{
   protected $subject = 'Default Subject';

  // other properties and methods
}

In addition, you can also define the default value in the form:

        $this->add(array(
            'name' => 'subject',
            'options' => array(
                'label' => 'Subject',
            ),
            'attributes' => array(
                'value' => 'Default Subject'
            ),
            'type'  => 'Text',
        ));

answered Feb 18, 2014 at 12:57

Ujjwal Ojha

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10 Comments

Nekapps Over a year ago

Thanks for your reply. It seems ok for what comes to String but what about date data type? Php cannot initialize an object as default value. It would be nice if the Hydrator get the variable from it's getter instead right?

AlexP Over a year ago

@Nekapps You can do that with setDate($date = null) and then if the value is null create a new DateTime instance. Alternatively look into Hydration Strategies add attach these to the hydrator to handle the special cases.

Ujjwal Ojha Over a year ago

@Nekapps Alex is right. Either, do that in the getter by checking if it is null or you can set the default value in the constructor of the entity! YOu may extend the classmethods hydrator as here

Nekapps Over a year ago

@UjjwalOjha Ok... I don't know if the code I wrote above is correct. But with the hydrator Classmethod, the bind method does not automatically use the getter method of the entity. Is it suppose to work this way?

Ujjwal Ojha Over a year ago

I could not understand what you want to say @Nekapps !

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