webform_invitation.module in Webform Invitation 8

Webform Invitation module.

File

webform_invitation.module

<?php

/**
 * @file
 * Webform Invitation module.
 */
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\webform\WebformSubmissionInterface;

/**
 * Implements hook_help().
 */
function webform_invitation_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'entity.webform.invitation':
      return '<p>' . t('This page allows administrators to enable or disable invitations for the current webform.') . '</p>';
    case 'entity.webform.invitation_codes':
      return '<p>' . t('This page provides list of all invitation codes that have been generated for the current webform and whether or not they have been used.') . '</p>';
    case 'entity.webform.invitation_generate':
      return '<p>' . t('This page provides a form to generate invitation codes. You may choose the number of generated codes and their type (MD5 or custom).') . '</p>';
    case 'entity.webform.invitation_download':
      return '<p>' . t('This page lets you download the list of not used generated codes as an Excel sheet including code and full URL to access the webform with auto-submitting the invitation code.') . '</p>';
  }
}

/**
 * Implements hook_webform_submission_form_alter().
 */
function webform_invitation_webform_submission_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  /** @var \Drupal\webform\WebformSubmissionInterface $submission */
  $submission = $form_state
    ->getFormObject();

  // Add form validation only if code element is available.
  if (!empty($submission
    ->getWebform()
    ->getElement('webform_invitation_code'))) {
    $form['#validate'][] = 'webform_invitation_code_validate';
  }
}

/**
 * Invitation Code element validation.
 *
 * @see webform_invitation_webform_submission_form_alter()
 */
function webform_invitation_code_validate(&$form, FormStateInterface $form_state) {
  $code = $form_state
    ->getValue('webform_invitation_code');

  // Get code details from DB.
  $query = \Drupal::database()
    ->select('webform_invitation_codes', 'c')
    ->fields('c');
  $query
    ->condition('code', $code);
  $result = $query
    ->execute()
    ->fetch();

  // Set error on element when needed.
  if (empty($result)) {
    $form_state
      ->setErrorByName('webform_invitation_code', t('This code is not valid.'));
  }
  elseif (!empty($result->used)) {

    // Not required, handled by webform unique option.
    $form_state
      ->setErrorByName('webform_invitation_code', t('This code has already been used.'));
  }
}

/**
 * Implements hook_ENTITY_TYPE_insert().
 */
function webform_invitation_webform_submission_insert(EntityInterface $entity) {

  // Basic validation of entity.
  if (!$entity instanceof WebformSubmissionInterface) {
    return;
  }
  $elements = $entity
    ->getWebform()
    ->getElementsDecodedAndFlattened();

  // Only if current webform has enabled invitations.
  if (isset($elements['webform_invitation_code'])) {
    $data = $entity
      ->getData();

    // Only if code was sent with current submission.
    if (!empty($data['webform_invitation_code'])) {

      // Update code usage in DB.
      $query = \Drupal::database()
        ->update('webform_invitation_codes')
        ->fields([
        'used' => \Drupal::time()
          ->getRequestTime(),
        'sid' => $entity
          ->id(),
      ]);
      $query
        ->condition('code', $data['webform_invitation_code']);
      $query
        ->execute();
    }
  }
}

Functions

Name	Description
webform_invitation_code_validate	Invitation Code element validation.
webform_invitation_help	Implements hook_help().
webform_invitation_webform_submission_form_alter	Implements hook_webform_submission_form_alter().
webform_invitation_webform_submission_insert	Implements hook_ENTITY_TYPE_insert().