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

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:

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:

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.