social_event_managers.module in Open Social 8.2

Contains social_event_managers.module.

File

modules/social_features/social_event/modules/social_event_managers/social_event_managers.module

<?php

/**
 * @file
 * Contains social_event_managers.module.
 */
use Drupal\Core\Access\AccessResultAllowed;
use Drupal\Core\Access\AccessResultForbidden;
use Drupal\node\Entity\Node;
use Drupal\node\NodeInterface;
use Drupal\block\Entity\Block;
use Drupal\Core\Session\AccountInterface;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Url;
use Drupal\social_event_managers\SocialEventManagersAccessHelper;
use Drupal\Core\Form\FormStateInterface;
use Drupal\user\Entity\User;

/**
 * Implements hook_preprocess_block().
 */
function social_event_managers_preprocess_block(&$variables) {

  /** @var \Drupal\node\Entity\Node $node */
  $node = \Drupal::routeMatch()
    ->getParameter('node');

  // Add variables to sidebar blocks.
  switch ($variables['elements']['#derivative_plugin_id']) {
    case 'managers-event_managers':

      // Show "All" button only when there are more than 10 organisers.
      if ($node->field_event_managers
        ->count() > 10) {
        $variables['view_all_path'] = Url::fromUserInput('/node/' . $node
          ->id() . '/organisers');
        $variables['button_text'] = t('All @label', [
          '@label' => $variables['label']['#markup'],
        ]);
      }
      break;
  }
}

/**
 * Implements hook_block_access().
 */
function social_event_managers_block_access(Block $block, $operation, AccountInterface $account) {
  if ($operation == 'view' && $block
    ->getPluginId() == 'views_block:managers-event_managers') {

    // Exclude block form edit node page.
    $route_name = \Drupal::routeMatch()
      ->getRouteName();
    if ($route_name == 'entity.node.edit_form') {
      return AccessResult::forbidden();
    }
  }

  // No opinion for other situations really.
  return AccessResult::neutral();
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function social_event_managers_form_node_event_edit_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  // On event event edit node form we check if users can alter author.
  $node = \Drupal::routeMatch()
    ->getParameter('node');

  // Not on newly created nodes so we check if there is a route match for a node
  // object.
  if ($node) {

    // Get the current user.
    $user = \Drupal::currentUser();

    // Remove authoring information for everybody on node event edit form.
    $form['author']['#access'] = FALSE;

    // Check for permission. Otherwise you can't change the author.
    // Unless you are the author / have the right permissions.
    if ($user
      ->hasPermission('administer nodes') || $user
      ->id() == $node
      ->getOwnerId()) {
      $form['author']['#access'] = TRUE;
    }
  }
}

/**
 * Implements hook_node_access_records().
 */
function social_event_managers_node_access_records(NodeInterface $node) {
  $grants = [];

  // Only for events.
  if ($node
    ->getType() === 'event') {

    // Event organizers should be granted access.
    foreach ($node
      ->get('field_event_managers')
      ->getValue() as $eventmanager) {

      // Load the event managers account.
      if ($account = User::load($eventmanager['target_id'])) {

        // Event organizers must have access
        // to view the record in the first place.
        if ($node
          ->access('view', $account)) {

          // Add grant.
          $grants[] = [
            'realm' => 'social_event_managers:' . $node
              ->id(),
            'gid' => $eventmanager['target_id'],
            'grant_view' => 1,
            'grant_update' => 1,
            'grant_delete' => 0,
          ];
        }
      }
    }
  }
  return $grants;
}

/**
 * Implements hook_node_grants().
 */
function social_event_managers_node_grants(AccountInterface $account, $op) {
  $grants = [];

  // TODO:
  // Fetch all nodes this user has access to and add a grant for each of those!
  $query = \Drupal::database()
    ->select('node__field_event_managers', 'em');
  $query
    ->fields('em', [
    'entity_id',
  ]);
  $query
    ->condition('em.field_event_managers_target_id', $account
    ->id());

  // Add grants.
  foreach ($query
    ->execute()
    ->fetchAllAssoc('entity_id') as $nid) {
    $grants['social_event_managers:' . $nid->entity_id][] = $account
      ->id();
  }

  // Tell Drupal about users grants.
  return $grants;
}

/**
 * Implements hook_module_implements_alter().
 */
function social_event_managers_module_implements_alter(&$implementations, $hook) {
  if ($hook == 'node_access') {

    // Remove the gnode implementation, we have a fallback in our hook.
    if (isset($implementations['gnode']) && function_exists('gnode_node_access')) {
      unset($implementations['gnode']);
    }
  }
}

/**
 * Implements hook_node_access().
 *
 * Remember: if any module returns forbidden and denies access to certain node
 * and operation it will not allow the user to do the operation on the node.
 *
 * We need this implementation because we also want to give edit access to event
 * manager regardless these scenarios thought of in gnode_node_access:
 * - is a member in the group and:
 * - has edit own or edit any permission in the group
 *
 * The gnode module specifically returns allowed if any of the above scenarios
 * are met, but forbidden in all the other scenarios. Our code ensures that if
 * we are in operation update and if gnode already returns forbidden we are able
 * to return an allowed if user is an event manager.
 */
function social_event_managers_node_access(NodeInterface $node, $op, AccountInterface $account) {

  // Only continue if the gnode module is enabled.
  if (function_exists('gnode_node_access')) {
    $gnode_access = gnode_node_access($node, $op, $account);
    if ($op === 'update') {
      if ($gnode_access instanceof AccessResultForbidden) {
        $social_event_managers_access = SocialEventManagersAccessHelper::getEntityAccessResult($node, $op, $account);

        // Only return the result of SocialEventManagersAccessHelper
        // if it is allowed.
        if ($social_event_managers_access instanceof AccessResultAllowed) {
          return $social_event_managers_access;
        }
      }
      return $gnode_access;
    }
    return $gnode_access;
  }
  return SocialEventManagersAccessHelper::getEntityAccessResult($node, $op, $account);
}

/**
 * Implements hook_menu_local_tasks_alter().
 */
function social_event_managers_menu_local_tasks_alter(&$data, $route_name) {
  $can_show_managers_link = FALSE;
  $routes_to_check = [
    'view.event_enrollments.view_enrollments',
    'entity.node.canonical',
    'view.managers.view_managers',
  ];
  if (in_array($route_name, $routes_to_check)) {
    $node = \Drupal::service('current_route_match')
      ->getParameter('node');
    if (!is_null($node) && !$node instanceof Node) {
      $node = Node::load($node);
    }
    if ($node instanceof Node && $node
      ->getType() === 'event') {
      $can_show_managers_link = TRUE;
    }
  }

  // PLace this here, since hiding it should happen
  // always and not only on the mentioned routes.
  if (!$can_show_managers_link) {
    unset($data['tabs'][0]['views_view:view.managers.view_managers']);
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function social_event_managers_form_node_event_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  // Set author of event as event organiser automatically.
  $config = \Drupal::configFactory()
    ->getEditable('social_event_managers.settings');
  if ($config
    ->get('author_as_manager')) {
    if ($form_state
      ->getTriggeringElement() === NULL) {
      $account = \Drupal::currentUser();
      $user = \Drupal::entityTypeManager()
        ->getStorage('user')
        ->load($account
        ->id());
      $last_key = $form['field_event_managers']['widget']['#max_delta'];
      $form['field_event_managers']['widget'][$last_key]['target_id']['#default_value'] = $user;
    }
  }
}

Functions

Name	Description
social_event_managers_block_access	Implements hook_block_access().
social_event_managers_form_node_event_edit_form_alter	Implements hook_form_FORM_ID_alter().
social_event_managers_form_node_event_form_alter	Implements hook_form_FORM_ID_alter().
social_event_managers_menu_local_tasks_alter	Implements hook_menu_local_tasks_alter().
social_event_managers_module_implements_alter	Implements hook_module_implements_alter().
social_event_managers_node_access	Implements hook_node_access().
social_event_managers_node_access_records	Implements hook_node_access_records().
social_event_managers_node_grants	Implements hook_node_grants().
social_event_managers_preprocess_block	Implements hook_preprocess_block().