rng_views.module in RNG - Events and Registrations 8

File

rng_views/rng_views.module

<?php

use Drupal\Component\Serialization\Yaml;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\views\Entity\View;
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_form_BASE_FORM_ID_alter().
 *
 * event_type_edit_form
 */
function rng_views_form_event_type_form_alter(&$form, FormStateInterface &$form_state) {

  /** @var \Drupal\Core\Entity\EntityFormInterface $form_object */
  $form_object = $form_state
    ->getFormObject();

  // This hook users BASE_ID, so this hook will be called for
  // EventTypeAccessDefaultsForm.
  if ($form_object
    ->getOperation() != 'edit') {
    return;
  }
  $form['actions']['submit']['#submit'][] = 'rng_views_form_event_type_form_alter_submit';

  /** @var \Drupal\rng\Entity\EventType $event_type */
  $event_type = $form_object
    ->getEntity();
  $entity_type = NULL;
  if (!empty($event_type
    ->getEventEntityTypeId())) {
    $entity_type = \Drupal::entityTypeManager()
      ->getDefinition($event_type
      ->getEventEntityTypeId());
  }
  $form['views'] = array(
    '#type' => 'fieldset',
    '#title' => t('Views'),
    '#tree' => TRUE,
    '#weight' => 20,
  );
  $title = t('Create registration list');
  if ($entity_type && ($view = View::load('rng_registrations_' . $entity_type
    ->id()))) {

    /** @var View $view */
    if ($view
      ->hasLinkTemplate('edit-form')) {
      $title = t('Create registration list (<a href="@view_link">view already exists</a>)', [
        '@view_link' => $view
          ->urlInfo()
          ->toString(),
      ]);
    }
    else {
      $title = t('Create registration list (view already exists)');
    }
  }
  $form['views']['registration_list'] = [
    '#type' => 'checkbox',
    '#title' => $title,
    '#description' => t('Lists all registrations for an event. View is visible as a tab on event entity pages.'),
  ];
}

/**
 * Form submission handler.
 *
 * @see rng_views_form_event_type_form_alter().
 */
function rng_views_form_event_type_form_alter_submit($form, FormStateInterface $form_state) {
  $form_object = $form_state
    ->getFormObject();
  $event_type = $form_object
    ->getEntity();
  $entity_type_id = $event_type
    ->getEventEntityTypeId();
  if ($entity_type = \Drupal::entityManager()
    ->getDefinition($event_type
    ->getEventEntityTypeId())) {
    $views = $form_state
      ->getValue('views');
    if ($views['registration_list']) {
      $view = rng_views_event_registrations($entity_type);
      $view
        ->save();
      drupal_set_message(t('<a href=":url">%label</a> view created.', [
        '%label' => $view
          ->label(),
        ':url' => $view
          ->toUrl()
          ->toString(),
      ]));
    }
  }
}

/**
 * Creates a registration list view based off `event.registrations.yml`.
 *
 * YAML file contains a premade registration view with relationship to nodes.
 * This function will overwrite node relationship with the passed entity.
 *
 * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
 *   The event entity type.
 */
function rng_views_event_registrations(EntityTypeInterface $entity_type) {
  $t_args = [
    '@entity_type' => $entity_type
      ->getLabel(),
    '@entity_type_id' => $entity_type
      ->getLabel(),
  ];
  $base_path = \Drupal::moduleHandler()
    ->getModule('rng_views')
    ->getPath();
  $yaml = Yaml::decode(file_get_contents($base_path . '/extra/event.registrations.yml'));

  /** @var View $view */
  $view = \Drupal::entityTypeManager()
    ->getStorage('view')
    ->createFromStorageRecord($yaml);
  $view_id = 'rng_registrations_' . $entity_type
    ->id();
  $i = 1;
  while (View::load($view_id)) {
    $view_id = 'rng_registrations_' . $i;
    $i++;
  }
  $view
    ->set('id', $view_id)
    ->set('originalId', NULL)
    ->set('uuid', NULL)
    ->set('label', t('RNG: @entity_type: Registrations', $t_args))
    ->set('description', t('Registrations for @entity_type events.', $t_args))
    ->set('tag', implode(', ', [
    'rng',
    'event',
    'list',
    $entity_type
      ->id(),
  ]));

  // Dependencies
  $dependencies = $view
    ->get('dependencies');
  if (array_key_exists('module', $dependencies)) {

    // Remove node module from dependencies.
    $dependencies['module'] = array_diff_key($view
      ->get('dependencies')['module'], [
      'node',
    ]);
  }
  $dependencies['module'][] = $entity_type
    ->getProvider();

  // Master display.
  $defaults = $view
    ->getDisplay('default');

  // VEOA Access.
  $defaults['display_options']['access']['options']['parameter'] = $entity_type
    ->id();
  $defaults['display_options']['access']['options']['entity_type'] = $entity_type
    ->id();
  $defaults['display_options']['access']['options']['operation'] = 'manage event';

  // DER Relationship.
  $relationship = $defaults['display_options']['relationships']['node__event'];

  // $target_entity__$origin_base_field_name
  $rid = $entity_type
    ->id() . '__event';
  $defaults['display_options']['relationships'] = [
    $rid => [
      'id' => $rid,
      'field' => $entity_type
        ->id() . '__event',
      'admin_label' => t('Event: @entity_type', $t_args),
    ] + $relationship,
  ];

  // Argument
  $argument = $defaults['display_options']['arguments']['nid'];
  $aid = $entity_type
    ->getKey('id');
  $defaults['display_options']['arguments'] = [
    $aid => [
      'id' => $aid,
      'table' => $entity_type
        ->getDataTable() ?: $entity_type
        ->getBaseTable(),
      'field' => $entity_type
        ->getKey('id'),
      'relationship' => $rid,
      'entity_type' => $entity_type
        ->id(),
      'entity_field' => $entity_type
        ->getKey('id'),
    ] + $argument,
  ];

  // Routing.
  if ($canonical_path = $entity_type
    ->getLinkTemplate('canonical')) {
    $page = $view
      ->getDisplay('page_1');
    $views_canonical_path = str_replace('{' . $entity_type
      ->id() . '}', '%' . $entity_type
      ->id(), $canonical_path);
    $page['display_options']['path'] = $views_canonical_path . '/registrations';
    $page['display_options']['display_extenders']['views_advanced_routing_route']['route']['defaults']['event'] = $entity_type
      ->id();
  }
  return $view;
}

Functions

Name	Description
rng_views_event_registrations	Creates a registration list view based off `event.registrations.yml`.
rng_views_form_event_type_form_alter	Implements hook_form_BASE_FORM_ID_alter().
rng_views_form_event_type_form_alter_submit	Form submission handler.