public function Term::evaluate in Term condition 8

Same name and namespace in other branches

1. 2.0.x src/Plugin/Condition/Term.php \Drupal\term_condition\Plugin\Condition\Term::evaluate()

Evaluates the condition and returns TRUE or FALSE accordingly.

Return value

bool TRUE if the condition has been met, FALSE otherwise.

Overrides ConditionInterface::evaluate

File

src/Plugin/Condition/Term.php, line 128

Contains \Drupal\term_condition\Plugin\Condition\Term.

Class

Term

Provides a 'Term' condition to enable a condition based in module selected status.

Namespace

Drupal\term_condition\Plugin\Condition

Code

public function evaluate() {
  if (empty($this->configuration['tid']) && !$this
    ->isNegated()) {
    return TRUE;
  }

  // If configuration['tid'] is an array, there is multiple terms set.
  if (is_array($this->configuration['tid'])) {
    $tids = $this->configuration['tid'];
    unset($this->configuration['tid']);
    foreach ($tids as $tid) {
      $this->configuration['tid'][] = array_pop($tid);
    }
  }
  $entity = $this
    ->getContextValue('node');

  // Not in a node context. Try a few other options.
  if (!$entity) {

    // Potential other ways to try fetch the entity. Assoc array to try get revisions.
    // I wonder if there is a cleaner way to do this?
    // TODO - Provide hook to add extras.
    $potentialRouteMatches = [
      'taxonomy_term' => 'taxonomy_term',
      'node' => 'node_revision',
    ];
    foreach ($potentialRouteMatches as $key => $potentialRouteMatch) {
      $entity = \Drupal::routeMatch()
        ->getParameter($potentialRouteMatch);

      // If the entity extends EntityInterface, we have the entity we want.
      if ($entity instanceof EntityInterface) {
        break;
      }
      elseif (is_string($entity)) {

        // If the entity is a string, its likely the revision ID,
        // try load that.
        $entity = $this->entityTypeManager
          ->getStorage($key)
          ->loadRevision($entity);
        break;
      }
    }

    // All checks failed. Stop.
    if (!$entity) {
      return FALSE;
    }
  }
  foreach ($entity
    ->referencedEntities() as $referenced_entity) {

    // If configuration['tid'] is an array with multiple terms, check all
    // tids in the array against the term.
    if (is_array($this->configuration['tid'])) {
      if ($referenced_entity
        ->getEntityTypeId() == 'taxonomy_term' && in_array($referenced_entity
        ->id(), $this->configuration['tid'])) {
        return TRUE;
      }
    }
    else {
      if ($referenced_entity
        ->getEntityTypeId() == 'taxonomy_term' && $referenced_entity
        ->id() == $this->configuration['tid']) {
        return TRUE;
      }
    }
  }
  return FALSE;
}