The form's view data is expected to be an instance of class My\(…), but is a(n) array

Question

Error that appears:

The form's view data is expected to be an instance of class My\FrontendBundle\Entity\Intro, but is a(n) array. You can avoid this error by setting the "data_class" option to null or by adding a view transformer that transforms a(n) array to an instance of My\FrontendBundle\Entity\Intro.

What is wrong?

In DefaultController.php I have

public function formularzAction(){
        $Repo = $this->getDoctrine()->getRepository('MyFrontendBundle:Intro');
        $Register = $Repo->findAll();
        $form = $this->createForm(new EditType(), $Register);
        return array(
            'form' => $form->createView(),
            'rows' => $Register
        );
    }

my EditType.php

<?php
namespace My\FrontendBundle\Form\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;

class EditType extends AbstractType{
    public function getName(){
        return 'register_form';
    }
    public function buildForm(FormBuilderInterface $builder, array $options) {
        $builder
                ->add('info', 'textarea', array(
                    'constraints' => array(
                        ),
                    'label' => 'Informacje dodatkowe'
                ))
            ;
    }
    public function setDefaultOptions(\Symfony\Component\OptionsResolver\OptionsResolverInterface $resolver) {
        $resolver->setDefaults(array(
            'data_class' => 'My\FrontendBundle\Entity\Intro'
        ));
        }   
}

my Intro.php:

<?php

namespace My\FrontendBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * Intro
 *
 * @ORM\Table()
 * @ORM\Entity
 */
class Intro
{
    /**
     * @var integer
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var string
     *
     * @ORM\Column(name="info", type="string", length=2500)
     */
    private $info;


    /**
     * Get id
     *
     * @return integer 
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Set info
     *
     * @param string $info
     * @return Intro
     */
    public function setInfo($info)
    {
        $this->info = $info;

        return $this;
    }

    /**
     * Get info
     *
     * @return string 
     */
    public function getInfo()
    {
        return $this->info;
    }
}

Grégory Elhaimer Grégory Elhaimer · Accepted Answer · 2015-03-21T21:06:33

Your form is waiting ONE and only ONE INtro entity.

Your findAll()query will return null or an array with 1 or more Intro instances.

You can not create the form with the result of findAll() query.

You'll need to provide an id to find a specific Intro from database or loop over the array findAll() gave you and make an new IntroType instance for each results.

The form's view data is expected to be an instance of class My\(…), but is a(n) array

1 Answers