SonataAdminBundle sonata_type_collection entity relations

Entity.php

class Entity {

	/**
	 * @var ArrayCollection
	 * @ORM\OneToMany(
	 *      targetEntity="PlaceThemePresence",
	 *      mappedBy="place",
	 *      cascade={"persist"},
	 *      orphanRemoval=true
	 * )
	 * @ORM\OrderBy({"id" = "ASC"})
	 */
	protected $placeThemePresences;
	
	public function __construct() {
		$this->placeThemePresences=new ArrayCollection();
	}

	/**
	 * @return ArrayCollection
	 */
	public function getPlaceThemePresences() {
		return $this->placeThemePresences;
	}
	
	/**
	 * @param ArrayCollection $presences
	 */
	public function setPlaceThemePresences($presences) {
		$this->placeThemePresences = new ArrayCollection();
		foreach ($presences as $presence) {
			$this->addPlaceThemePresence($presence);
		}
	}
	
	public function addPlaceThemePresence(PlaceThemePresence $presence) {
		if (!$this->getPlaceThemePresences()->contains($presence)) {
			$this->getPlaceThemePresences()->add($presence);
			$presence->setPlace($this);
		}
		return $this;
	}
	
	public function removePlaceThemePresence(PlaceThemePresence $presence) {
		if ($this->getPlaceThemePresences()->contains($presence)) {
			$this->getPlaceThemePresences()->removeElement($presence);
			$presence->removePlace($this);
		}
		return $this;
	}
	
	public function updatePresences() {
		$this->setPlaceThemePresences($this->getPlaceThemePresences());
	}
}

EntityAdmin.php

protected function configureFormFields(FormMapper $formMapper)
{

	// ...
	
	$formMapper
		->add('placeThemePresences', 'sonata_type_collection',
			array('required'=>true, 'label'=>'Themes'),
			array('edit' => 'inline','inline' => 'table')
		)
		->add('links', 'sonata_type_collection', array('required'=>false), array(
			'edit' => 'inline',
			'inline' => 'table'
		))
	;
		
	// ...
	
}

// RELATION FIXES

public function prePersist($target) {
	$target->updatePresences();
}

public function preUpdate($target) {
	$target->updatePresences();
}

EntityPresenceAdmin.php

protected function configureFormFields(FormMapper $formMapper) {

	$isChild=$this->hasParentFieldDescription() || $this->isChild();
	$isThemeChild=false;
	$isPlaceChild=false;

	if ($isChild) {
		$isThemeChild=$this->getParentFieldDescription()->getAdmin() instanceof ThemeAdmin;
		$isPlaceChild=$this->getParentFieldDescription()->getAdmin() instanceof PlaceAdmin;
	}

	if (!$isPlaceChild) $formMapper->add('place');
	if (!$isThemeChild) $formMapper->add('theme');
}