SocialGroupEntityAutocomplete.php in Open Social 8.9

Namespace

Drupal\social_group\Element

File

modules/social_features/social_group/src/Element/SocialGroupEntityAutocomplete.php

<?php

namespace Drupal\social_group\Element;

use Drupal\Core\Entity\EntityReferenceSelection\SelectionWithAutocreateInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\social_core\Entity\Element\EntityAutocomplete;
use Drupal\Component\Utility\Tags;
use Drupal\user\Entity\User;

/**
 * Provides an Group member autocomplete form element.
 *
 * The #default_value accepted by this element is either an entity object or an
 * array of entity objects.
 *
 * @FormElement("social_group_entity_autocomplete")
 */
class SocialGroupEntityAutocomplete extends EntityAutocomplete {

  /**
   * Form element validation handler for entity_autocomplete elements.
   */
  public static function validateEntityAutocomplete(array &$element, FormStateInterface $form_state, array &$complete_form, $select2 = FALSE) {
    $duplicated_values = $value = [];

    // Load the current Group so we can see if there are existing members.
    $group = _social_group_get_current_group();

    // If we use the select 2 widget then we already got a nice array.
    if ($select2 === TRUE) {
      $input_values = $element['#value'];
    }
    else {

      // Grab all the input values so we can get the ID's out of them.
      $input_values = Tags::explode($element['#value']);
    }
    foreach ($input_values as $input) {
      $match = static::extractEntityIdFromAutocompleteInput($input);

      // If we use the select 2 widget then we already got a nice array.
      if ($select2 === TRUE) {
        $match = $input;
      }
      if ($match === NULL) {
        $options = $element['#selection_settings'] + [
          'target_type' => $element['#target_type'],
          'handler' => $element['#selection_handler'],
        ];

        /* @var /Drupal\Core\Entity\EntityReferenceSelection\SelectionInterface $handler */
        $handler = \Drupal::service('plugin.manager.entity_reference_selection')
          ->getInstance($options);
        $autocreate = (bool) $element['#autocreate'] && $handler instanceof SelectionWithAutocreateInterface;

        // Try to get a match from the input string when the user didn't use
        // the autocomplete but filled in a value manually.
        // Got this from the parent::validateEntityAutocomplete.
        $match = static::matchEntityByTitle($handler, $input, $element, $form_state, !$autocreate);
      }
      if ($match !== NULL) {
        $value[$match] = [
          'target_id' => $match,
        ];
        $account = User::load($match);

        // User is already a member, add it to an array for the Form element
        // to render an error after all checks are gone.
        if ($group
          ->getMember($account)) {
          $duplicated_values[] = $account
            ->getDisplayName();
        }

        // Validate input for every single user. This way we make sure that
        // The element validates one, or more users added in the autocomplete.
        // This is because Group doesn't allow adding multiple users at once,
        // so we need to validate single users, if they all pass we can add
        // them all in the _social_group_action_form_submit.
        parent::validateEntityAutocomplete($element, $form_state, $complete_form);
      }
    }

    // If we have duplicates, provide an error message.
    if (!empty($duplicated_values)) {
      $usernames = implode(', ', $duplicated_values);
      $message = \Drupal::translation()
        ->formatPlural(count($duplicated_values), "@usernames is already member of the group, you can't add them again", "@usernames are already members of the group, you can't add them again", [
        '@usernames' => $usernames,
      ]);

      // We have to kick in a form set error here, or else the
      // GroupContentCardinalityValidator will kick in and show a faulty
      // error message. Alter this later when Group supports multiple members.
      $form_state
        ->setError($element, $message);
      return;
    }
    if ($value) {

      // Select2 gives us an array back, which errors the field even though we
      // don't use it to perform the action, but we should mimic the behaviour
      // as it would be without Select2.
      if ($select2 === TRUE) {
        $form_state
          ->setValue([
          'entity_id',
          '0',
          'target_id',
        ], $match);
      }
      $form_state
        ->setValue('entity_id_new', $value);
    }
  }

}

Classes

Name	Description
SocialGroupEntityAutocomplete	Provides an Group member autocomplete form element.