/**
* Generates a render array of the applicable bundles for the flag..
*
* @param \Drupal\flag\FlagInterface $flag
* The flag entity.
*
* @return array
* A render array of the applicable bundles for the flag..
*/
protected function getBundles(FlagInterface $flag) {
$bundles = $flag->getBundles();
if (empty($bundles)) {
return [
'#markup' => '<em>' . $this->t('All') . '</em>',
'#allowed_tags' => ['em'],
];
}
return [
'#markup' => implode(', ', $bundles),
];
}
/**
* {@inheritdoc}
*/
public function unflag(FlagInterface $flag, EntityInterface $entity, AccountInterface $account = NULL) {
$bundles = $flag->getBundles();
// Check the entity type corresponds to the flag type.
if ($flag->getFlaggableEntityTypeId() != $entity->getEntityTypeId()) {
throw new \LogicException('The flag does not apply to entities of this type.');
}
// Check the bundle is allowed by the flag.
if (!empty($bundles) && !in_array($entity->bundle(), $bundles)) {
throw new \LogicException('The flag does not apply to the bundle of the entity.');
}
$flagging = $this->getFlagging($flag, $entity, $account);
// Check whether there is an existing flagging for the combination of flag,
// entity, and user.
if (!$flagging) {
throw new \LogicException('The entity is not flagged by the user.');
}
$this->eventDispatcher->dispatch(FlagEvents::ENTITY_UNFLAGGED, new FlaggingEvent($flag, $entity));
$flagging->delete();
}