Symfony2 Form Builder Select Across Join Table with Metadata

Question

I have 3 entities:

[Member] ----OneToMany----> [MemberCategory] ---ManyToOne---> [Category]

This works well as far as fetching results fr

Answer 1

You will need to use the querybuilder inside your form

$builder->add('categories', 'entity', array(
        'class' => 'SMWMemberBundle:MemberCategory',
        'property'     => 'category.categoryName',
        'query_builder' => function(EntityRepository $er ) use ( ? ) {
           return $er->createQueryBuilder( ? )

          // your query with a left join probably

         }
        'multiple'     => true,
        'expanded'     => true,
        'required' => false
    ));

See documentation for proper use. see symfony2 form querybuilder with parameters for an exmple

Answer 2

The post of cheesemacfly is not so bad, but it is call embeded form and can be complicated to manage. In fact, you jus need to create a "Custom Repositories" http://symfony.com/doc/current/book/doctrine.html#custom-repository-classes

It will add a new methods for "grabbing" your ORM object with Doctrine2 like find() or findBy();

1) Create a new repository in a Repository Folder of your Bundle

<?php
  namespace YourVendor\SMWMemberBundle\Repository;
  use Doctrine\ORM\EntityRepository;

  class CategoryRepository extends EntityRepository{

  public function UsedByMember($member){
  return $this
         ->createQueryBuilder('c')
         ->leftJoin('c.Member', 'mc')
         ->where('mc.member = ?1')
         ->setParameter(1, $member);
}

}

2) Attached your Cutom repository to your Entity

namespace YourVendor\SMWMemberBundle\Entity;
use Doctrine\ORM\Mapping as ORM;

/**
* @ORM\Entity(repositoryClass="YourVendor\SMWMemberBundle\Entity\ProductRepository")
* @ORM\Table(name="Category") 
*/
class Category{

3) add a constructor to your Form class and pass de Entity Manager and the variable required to your query :

class CategoryUserForm extends AbstractType
{
   private $em;
   private $member ;


   public function __construct(EntityManager $em, $site, $seed)
   {
       $this->em = $em;
       $this->member = $member;

   }

public function buildForm(FormBuilder $builder, array $options)
{
    $qb = $this->em->getRepository('SMWMemberBundle:Category')->UsedByUsers($this->member);
    $builder->add('categories', 'entity', array(
        'class' => 'SMWMemberBundle:MemberCategory',
        'query_builder'     => $qb,
        'multiple'     => true,
        'expanded'     => true,
        'required' => false
    ));
 }

4) In your controller, you create your form like that :

$editForm = $this->createForm(new CategoryUserForm($em, $member), $category);

Feel free to ask me questions, I'm hope this is what you are looking for ;)

Answer 3

This is how I resolved this problem in the past (applied to your example) but this is what I figured out so it might not be 100% right for your case.

First create a MemberCategory form type matching your needs:

<?php    
namespace Company\YourBundle\Form\Type;

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

class MemberCategoryType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('priority')
            ->add('category', 'entity',
                    array('property' => 'name',
                        'class' => 'CompanyYourBundle:Category'))
        ;
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Company\YourBundle\Entity\MemberCategory'
        ));
    }

    public function getName()
    {
        return 'company_yourbundle_membercategorytype';
    }
}

Then add this form type inside your Member type form:

<?php

namespace Company\YourBundle\Form\Type;

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

class MemberType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name')
            ->add('members', 'collection', array(
                'type' => new MemberCategoryType(),
                'allow_add' => true,
                'allow_delete' => true,
                'by_reference' => false,));
        ;
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Company\YourBundle\Entity\Member'
        ));
    }

    public function getName()
    {
        return 'company_yourbundle_membertype';
    }
}

Then you can follow the documentation to add as many categories as you want to your members and assigning a priority every time.