RegistrantsElementUtility.php in RNG - Events and Registrations 8.2

Namespace

Drupal\rng

File

src/RegistrantsElementUtility.php

<?php

namespace Drupal\rng;

use Drupal\Component\Utility\NestedArray;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element;
use Drupal\rng\Entity\RegistrantInterface;
use Drupal\user\Entity\User;

/**
 *
 */
class RegistrantsElementUtility {

  /**
   * @var array
   */
  protected $element;

  /**
   * @var \Drupal\Core\Form\FormStateInterface
   */
  protected $formState;

  /**
   * RegistrantsElementUtility constructor.
   *
   * @param array $element
   *   The form array of the registrants element.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  public function __construct(array &$element, FormStateInterface &$form_state) {
    $this->element = $element;
    $this->formState = $form_state;
  }

  /**
   * Traverses the triggering element tree until this element is found.
   *
   * @param array $form
   *   The complete form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   *
   * @return array|null
   *   The element, or NULL if the element is not found.
   */
  public static function findElement(array $form, FormStateInterface $form_state) {
    return static::findElementWithProperties($form, $form_state, [
      '#identity_element_root' => TRUE,
    ]);
  }

  /**
   * Traverses the triggering element tree until an element is found.
   *
   * Traverses parents tree from the triggering element to find the element
   * with the passed in properties.
   *
   * @param array $form
   *   The complete form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   * @param array $element_properties
   *   Traverse up until finding an element with the properties with these keys
   *   and values.
   *
   * @return array|null
   *   The requested element, or NULL if the element is not found.
   */
  protected static function findElementWithProperties(array $form, FormStateInterface $form_state, array $element_properties) {
    $trigger = $form_state
      ->getTriggeringElement();
    $parents = $trigger['#parents'];

    // In case $form is the element itself.
    $element = $form;
    while (!isset($element) || array_diff_assoc($element_properties, $element)) {
      $element = NestedArray::getValue($form, $parents);
      if (array_pop($parents) === NULL) {
        return NULL;
      }
    }
    return $element;
  }

  /**
   *
   */
  public function addRegistrant(RegistrantInterface $registrant) {
    $registrants = $this
      ->getRegistrants();
    $registrants[] = $registrant;
    $this
      ->setRegistrants($registrants);
  }

  /**
   *
   */
  public function replaceFirstRegistrant(RegistrantInterface $registrant) {
    $registrants = $this
      ->getRegistrants();

    // Get first key, or use 0 if there is none.
    $key = key($registrants);
    $key = $key !== NULL ? $key : 0;
    $registrants[$key] = $registrant;
    $this
      ->setRegistrants($registrants);
  }

  /**
   * Gets registrant from form state.
   *
   * @return \Drupal\rng\Entity\RegistrantInterface[]
   *   An array of registrants.
   */
  public function getRegistrants() {
    return $this->formState
      ->get(array_merge($this->element['#parents'], [
      'registrants',
    ])) ?: $this->element['#value'];
  }

  /**
   * Sets registrants in form state.
   *
   * @param \Drupal\rng\Entity\RegistrantInterface[] $registrants
   *   An array of registrants.
   */
  public function setRegistrants(array $registrants) {
    $this->formState
      ->set(array_merge($this->element['#parents'], [
      'registrants',
    ]), $registrants);
  }

  /**
   * Gets identities which should skip the existing validation check.
   *
   * @return array
   *   An array of identities to skip existing check.
   */
  public function getWhitelistExisting() {
    return $this->formState
      ->get(array_merge($this->element['#parents'], [
      'whitelist_existing',
    ])) ?: [];
  }

  /**
   * Whitelist an existing identity from re-validation.
   *
   * Identities created by this element should avoid the existing check of
   * EventMetaInterface::identitiesCanRegister in case the event type does not
   * permit usage of the 'existing' subform.
   *
   * @param \Drupal\Core\Entity\EntityInterface $identity
   *   An identity to whitelist from re-validation.
   */
  public function addWhitelistExisting(EntityInterface $identity) {
    $whitelisted = $this
      ->getWhitelistExisting();
    $whitelisted[$identity
      ->getEntityTypeId()][$identity
      ->id()] = $identity
      ->id();
    $this->formState
      ->set(array_merge($this->element['#parents'], [
      'whitelist_existing',
    ]), $whitelisted);
  }

  /**
   * Get form state for change_it.
   *
   * @return bool
   *   The current value for change_it.
   */
  public function getChangeIt() {
    return $this->formState
      ->get(array_merge($this->element['#parents'], [
      'change_it',
    ])) ?: FALSE;
  }

  /**
   * Set form state for change_it.
   *
   * @param $value
   */
  public function setChangeIt($value) {
    $this->formState
      ->set(array_merge($this->element['#parents'], [
      'change_it',
    ]), $value);
  }

  /**
   * Get form state for opening the create-an-entity sub-form.
   *
   * @return bool
   *   Wther the create-an-entity sub-form is open.
   */
  public function getShowCreateEntitySubform() {
    return (bool) $this->formState
      ->get(array_merge($this->element['#parents'], [
      'show_entity_create_form',
    ]));
  }

  /**
   * Set form state for opening the create-an-entity sub-form.
   *
   * @param $value
   */
  public function setShowCreateEntitySubform($value) {
    $this->formState
      ->set(array_merge($this->element['#parents'], [
      'show_entity_create_form',
    ]), $value);
  }

  /**
   * Clear user input from people sub-forms.
   */
  public function clearPeopleFormInput() {
    $autocomplete_tree = array_merge($this->element['#parents'], [
      'entities',
      'person',
      'existing',
      'existing_autocomplete',
    ]);
    NestedArray::unsetValue($this->formState
      ->getUserInput(), $autocomplete_tree);
    $registrant_tree = array_merge($this->element['#parents'], [
      'entities',
      'person',
      'registrant',
    ]);
    NestedArray::unsetValue($this->formState
      ->getUserInput(), $registrant_tree);
    $new_entity_tree = array_merge($this->element['#parents'], [
      'entities',
      'person',
      'new_person',
      'newentityform',
    ]);
    NestedArray::unsetValue($this->formState
      ->getUserInput(), $new_entity_tree);
  }

  /**
   * Copies form values to registrant entity properties.
   *
   * @param bool $validate
   *   Optionally validate the form.
   *
   * @return \Drupal\rng\Entity\RegistrantInterface
   *   A registrant entity with updated properties.
   */
  public function buildRegistrant($validate = FALSE) {
    $value = $this->formState
      ->getTemporaryValue(array_merge([
      '_registrants_values',
    ], $this->element['#parents']));
    $this->formState
      ->setValue($this->element['#parents'], $value);
    $registrant = $this->formState
      ->get('registrant__entity');
    $display = $this->formState
      ->get('registrant__form_display');
    $registrant_tree = [
      'entities',
      'person',
      'registrant',
    ];
    $subform_registrant = NestedArray::getValue($this->element, $registrant_tree);
    $display
      ->extractFormValues($registrant, $subform_registrant, $this->formState);
    if ($validate) {
      $display
        ->validateFormValues($registrant, $subform_registrant, $this->formState);
    }
    return $registrant;
  }

  /**
   * Load first registrant into form inputs.
   */
  public function setForBundleAsFirstRegistrant() {

    /** @var \Drupal\rng\Entity\RegistrantInterface[] $registrants */
    $registrants = $this->element['#value'];
    $registrant = reset($registrants);
    if ($registrant) {
      $identity = $registrant
        ->getIdentity();
      $entity_type = $identity
        ->getEntityTypeId();
      $bundle = $identity
        ->bundle();
      $new_value = "{$entity_type}:{$bundle}";
      $for_bundle_tree = array_merge($this->element['#parents'], [
        'entities',
        'for_bundle',
      ]);
      NestedArray::setValue($this->formState
        ->getUserInput(), $for_bundle_tree, $new_value);
    }
  }

  /**
   * Determine if an identity is already used.
   *
   * @param \Drupal\Core\Entity\EntityInterface $identity
   *   An identity to check.
   *
   * @return bool
   *   Whether the identity is already used.
   */
  public function identityExists(EntityInterface $identity) {
    $registrants = $this
      ->getRegistrants();
    foreach ($registrants as $registrant) {
      if ($registrant
        ->getIdentity() && $registrant
        ->getIdentity()
        ->id() == $identity
        ->id() && $registrant
        ->getIdentity()
        ->getEntityTypeId() == $identity
        ->getEntityTypeId()) {
        return TRUE;
      }
    }
    return FALSE;
  }

  /**
   * Count referenceable identities for an event.
   *
   * @param \Drupal\Core\Entity\EntityInterface $event
   *   The event entity.
   * @param string $entity_type_id
   *   The identity entity type ID.
   * @param array $bundles
   *   (optional) Identity bundles.
   *
   * @return int
   *   The count of referencable entities.
   */
  public function countReferenceableEntities(EntityInterface $event, $entity_type_id, $bundles = []) {

    /** @var \Drupal\Core\Entity\EntityReferenceSelection\SelectionPluginManagerInterface $selection_manager */
    $selection_manager = \Drupal::service('plugin.manager.entity_reference_selection');
    $options = [
      'target_type' => $entity_type_id,
      'handler' => 'rng_register',
      'handler_settings' => [
        'event_entity_type' => $event
          ->getEntityTypeId(),
        'event_entity_id' => $event
          ->id(),
      ],
    ];
    if (!empty($bundles)) {
      $options['handler_settings']['target_bundles'] = $bundles;
    }

    /* @var \Drupal\Core\Entity\EntityReferenceSelection\SelectionInterface $selection */
    $selection = $selection_manager
      ->getInstance($options);
    return $selection
      ->countReferenceableEntities();
  }

  /**
   * Generate available people type options suitable for radios element.
   *
   * @return array
   *   Options suitable for a radios element.
   */
  public function peopleTypeOptions() {

    /** @var \Drupal\rng\EventManagerInterface $event_manager */
    $event_manager = \Drupal::service('rng.event_manager');

    /** @var \Drupal\Core\Entity\EntityTypeBundleInfoInterface $bundle_info */
    $bundle_info = \Drupal::service('entity_type.bundle.info');
    $entity_type_manager = \Drupal::entityTypeManager();
    $current_user = \Drupal::currentUser();
    $event = $this->element['#event'];
    $event_meta = $event_manager
      ->getMeta($event);
    $event_type = $event_meta
      ->getEventType();
    $for_bundles = [];

    // Anonymous registrant.
    if ($event_type
      ->getAllowAnonRegistrants()) {
      $for_bundles['anon:'] = t('Registrant');
    }

    // Create.
    foreach ($this->element['#allow_creation'] as $entity_type_id => $bundles) {
      $info = $bundle_info
        ->getBundleInfo($entity_type_id);
      foreach ($bundles as $bundle) {
        if ($this
          ->entityCreateAccess($entity_type_id, $bundle)) {
          $for_bundle_key = $entity_type_id . ':' . $bundle;
          $for_bundles[$for_bundle_key] = $info[$bundle]['label'];
        }
      }
    }

    // Existing.
    foreach ($this->element['#allow_reference'] as $entity_type_id => $bundles) {
      $entity_type = $entity_type_manager
        ->getDefinition($entity_type_id);
      $info = $bundle_info
        ->getBundleInfo($entity_type_id);
      foreach ($bundles as $bundle) {
        $for_bundle_key = $entity_type_id . ':' . $bundle;
        if (isset($for_bundles[$for_bundle_key])) {

          // Skip if there an option already exists for 'create'.
          continue;
        }
        $counting_bundle = $entity_type
          ->getBundleEntityType() !== NULL ? [
          $bundle,
        ] : [];
        $existing_count = $this
          ->countReferenceableEntities($event, $entity_type_id, $counting_bundle);

        // Add myself special option.
        if ($entity_type_id === 'user' && $current_user
          ->isAuthenticated()) {
          $identity = User::load($current_user
            ->id());
          if (!$this
            ->identityExists($identity)) {
            if ($event_meta
              ->identitiesCanRegister('user', [
              $current_user
                ->id(),
            ])) {
              $existing_count--;
              $for_bundles['myself:'] = t('Myself');
            }
          }
        }
        if ($existing_count > 0) {
          $for_bundles[$for_bundle_key] = $info[$bundle]['label'];
        }
      }
    }
    return $for_bundles;
  }

  /**
   * Determine whether the current user can create new entities.
   *
   * @param string $entity_type_id
   *   A entity type ID.
   * @param string $bundle
   *   An entity bundle.
   *
   * @return bool
   *   Whether the current user can create new entities.
   */
  public static function entityCreateAccess($entity_type_id, $bundle) {
    $entity_type_manager = \Drupal::entityTypeManager();
    $entity_type = $entity_type_manager
      ->getDefinition($entity_type_id);
    $access_control = $entity_type_manager
      ->getAccessControlHandler($entity_type_id);

    // If entity type has bundles.
    $entity_bundle = $entity_type
      ->getBundleEntityType() !== NULL ? $bundle : NULL;
    return $access_control
      ->createAccess($entity_bundle);
  }

}

Classes

Name	Description
RegistrantsElementUtility