AssignMultiple.php

<?php

namespace Drupal\tmgmt_local\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\TempStore\PrivateTempStoreFactory;
use Drupal\Core\Url;
use Drupal\tmgmt_local\Entity\LocalTask;
use Drupal\user\Entity\User;
use Drupal\views\Views;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides a node deletion confirmation form.
 */
class AssignMultiple extends FormBase {

  /**
   * The array of tasks to assign.
   *
   * @var string[]
   */
  protected $taskInfo = array();

  /**
   * The tempstore factory.
   *
   * @var \Drupal\Core\TempStore\PrivateTempStoreFactory
   */
  protected $tempStoreFactory;

  /**
   * Constructs a DeleteMultiple form object.
   *
   * @param \Drupal\Core\TempStore\PrivateTempStoreFactory $temp_store_factory
   *   The tempstore factory.
   */
  public function __construct(PrivateTempStoreFactory $temp_store_factory) {
    $this->tempStoreFactory = $temp_store_factory;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('tempstore.private'));
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'task_multiple_assign';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $this->taskInfo = $this->tempStoreFactory
      ->get('task_multiple_assign')
      ->get(\Drupal::currentUser()
      ->id());
    $form_state
      ->set('tasks', array_keys($this->taskInfo));
    $roles = tmgmt_local_translator_roles();
    if (empty($roles)) {
      $this
        ->messenger()
        ->addWarning(t('No user role has the "provide translation services" permission. <a href="@url">Configure permissions</a> for the Drupal user module.', array(
        '@url' => URL::fromRoute('user.admin_permissions'),
      )));
    }
    $form['tuid'] = array(
      '#title' => t('Assign to'),
      '#type' => 'select',
      '#empty_option' => t('- Select user -'),
      '#options' => tmgmt_local_get_assignees_for_tasks($form_state
        ->get('tasks')),
      '#required' => TRUE,
    );
    $form['actions']['#type'] = 'actions';
    $form['actions']['submit'] = array(
      '#type' => 'submit',
      '#value' => t('Assign tasks'),
    );
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {

    /** @var User $assignee */
    $assignee = User::load($form_state
      ->getValue('tuid'));
    $how_many = 0;
    foreach ($form_state
      ->get('tasks') as $task_id) {
      $task = LocalTask::load($task_id);
      if ($task) {
        $task
          ->assign($assignee);
        $task
          ->save();
        ++$how_many;
      }
    }
    $this
      ->messenger()
      ->addStatus(t('Assigned @how_many to user @assignee_name.', array(
      '@how_many' => $how_many,
      '@assignee_name' => $assignee
        ->getAccountName(),
    )));
    $view = Views::getView('tmgmt_local_task_overview');
    $view
      ->initDisplay();
    $form_state
      ->setRedirect($view
      ->getUrl()
      ->getRouteName());
  }

}