How to administer Doctrine ORM Class Table Inheritance via SonataAdminBundle (Symfony)?

Question

symfony

Good afternoon!
I have a Doctrine entity Foo that is related One-To-One to an AbstractBar entity:

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

    /**
     * @var AbstractBar
     *
     * @ORM\OneToOne(targetEntity="AbstractBar", cascade={"persist"})
     * @ORM\JoinColumn(name="bar_id", referencedColumnName="id")
     */
    private $bar;
}

An AbstractBar entity is an abstract entity that has two concrete entities associated with it using the Class Table Inheritance model .
Thus, I have this:

/**
 * @ORM\Table(name="bar")
 * @ORM\Entity
 * @ORM\InheritanceType("JOINED")
 * @ORM\DiscriminatorColumn(name="bar_type", type="string")
 * @ORM\DiscriminatorMap({"one" = "BarOne", "two" = "BarTwo"})
 */
abstract class AbstractBar
{
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;
}

/**
 * @ORM\Table(name="bar_one")
 * @ORM\Entity
 */
class BarOne extends AbstractBar
{
    // свойства класса BarOne
}

/**
 * @ORM\Table(name="bar_two")
 * @ORM\Entity
 */
class BarTwo extends AbstractBar
{
    // свойства класса BarTwo
}

At the same time, the admin (SonataAdminBundle) of the Foo entity is configured as follows:

class FooAdmin extends AbstractAdmin
{
    protected function configureFormFields(FormMapper $formMapper)
    {
        $formMapper
            ->add('bar', AdminType::class, array(), array(
                'admin_code' => 'key.of.bar_one.admin.service'
            ))
        ;
    }
}

At the same time, the admin class service itself looks like this:

key.of.bar_one.admin.service:
        class: MyBundle\Admin\BarAdmin
        arguments: [~, MyBundle\Entity\BarOne, ~]
        tags:
            - name: sonata.admin
              manager_type: orm
              show_in_dashboard: false

The above code allows me to edit and create BarOne entities by editing the Foo entity.
Question: how can I make it so that I can switch between BarOne and BarTwo in the admin panel? Those. so that you can implement the multiple selection provided by Doctrine ORM (Class Table Inheritance).

Answer 1

Add a subclass to the base admin service.
calls: ["addSubClass",[...]]