--- /dev/null
+<?php
+
+namespace Drupal\redirect_404\Form;
+
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Core\Url;
+use Drupal\redirect_404\SqlRedirectNotFoundStorage;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form that lists all 404 error paths and no redirect assigned yet.
+ *
+ * This is a fallback for the provided default view.
+ */
+class RedirectFix404Form extends FormBase {
+
+ /**
+ * The language manager.
+ *
+ * @var \Drupal\Core\Language\LanguageManagerInterface
+ */
+ protected $languageManager;
+
+ /**
+ * The redirect storage.
+ *
+ * @var \Drupal\redirect_404\SqlRedirectNotFoundStorage
+ */
+ protected $redirectStorage;
+
+ /**
+ * The date formatter service.
+ *
+ * @var \Drupal\Core\Datetime\DateFormatterInterface
+ */
+ protected $dateFormatter;
+
+ /**
+ * The entity manager.
+ *
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * Constructs a RedirectFix404Form.
+ *
+ * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+ * The language manager.
+ * @param \Drupal\redirect_404\SqlRedirectNotFoundStorage $redirect_storage
+ * The redirect storage.
+ * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+ * The date Formatter service.
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * The entity manager.
+ */
+ public function __construct(LanguageManagerInterface $language_manager, SqlRedirectNotFoundStorage $redirect_storage, DateFormatterInterface $date_formatter, EntityTypeManagerInterface $entity_type_manager) {
+ $this->languageManager = $language_manager;
+ $this->redirectStorage = $redirect_storage;
+ $this->dateFormatter = $date_formatter;
+ $this->entityTypeManager = $entity_type_manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('language_manager'),
+ $container->get('redirect.not_found_storage'),
+ $container->get('date.formatter'),
+ $container->get('entity_type.manager')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'redirect_fix_404_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ $destination = $this->getDestinationArray();
+
+ $search = $this->getRequest()->get('search');
+ $form['#attributes'] = ['class' => ['search-form']];
+
+ $form['basic'] = [
+ '#type' => 'fieldset',
+ '#title' => $this->t('Filter 404s'),
+ '#attributes' => ['class' => ['container-inline']],
+ ];
+ $form['basic']['filter'] = [
+ '#type' => 'textfield',
+ '#title' => '',
+ '#default_value' => $search,
+ '#maxlength' => 128,
+ '#size' => 25,
+ ];
+ $form['basic']['submit'] = [
+ '#type' => 'submit',
+ '#value' => $this->t('Filter'),
+ '#action' => 'filter',
+ ];
+ if ($search) {
+ $form['basic']['reset'] = [
+ '#type' => 'submit',
+ '#value' => $this->t('Reset'),
+ '#action' => 'reset',
+ ];
+ }
+
+ $languages = $this->languageManager->getLanguages(LanguageInterface::STATE_ALL);
+ $multilingual = $this->languageManager->isMultilingual();
+
+ $header = [
+ ['data' => $this->t('Path'), 'field' => 'source'],
+ ['data' => $this->t('Count'), 'field' => 'count', 'sort' => 'desc'],
+ ['data' => $this->t('Last accessed'), 'field' => 'timestamp'],
+ ];
+ if ($multilingual) {
+ $header[] = ['data' => $this->t('Language'), 'field' => 'language'];
+ }
+ $header[] = ['data' => $this->t('Operations')];
+
+ $rows = [];
+ $results = $this->redirectStorage->listRequests($header, $search);
+ foreach ($results as $result) {
+ $path = ltrim($result->path, '/');
+
+ $row = [];
+ $row['source'] = $path;
+ $row['count'] = $result->count;
+ $row['timestamp'] = $this->dateFormatter->format($result->timestamp, 'short');
+ if ($multilingual) {
+ if (isset($languages[$result->langcode])) {
+ $row['language'] = $languages[$result->langcode]->getName();
+ }
+ else {
+ $row['language'] = $this->t('Undefined @langcode', ['@langcode' => $result->langcode]);
+ }
+ }
+
+ $operations = [];
+ if ($this->entityTypeManager->getAccessControlHandler('redirect')->createAccess()) {
+ $operations['add'] = [
+ 'title' => $this->t('Add redirect'),
+ 'url' => Url::fromRoute('redirect.add', [], ['query' => ['source' => $path, 'language' => $result->langcode] + $destination]),
+ ];
+ }
+ $row['operations'] = [
+ 'data' => [
+ '#type' => 'operations',
+ '#links' => $operations,
+ ],
+ ];
+
+ $rows[] = $row;
+ }
+
+ $form['redirect_404_table'] = [
+ '#theme' => 'table',
+ '#header' => $header,
+ '#rows' => $rows,
+ '#empty' => $this->t('There are no 404 errors to fix.'),
+ ];
+ $form['redirect_404_pager'] = ['#type' => 'pager'];
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+
+ if ($form_state->getTriggeringElement()['#action'] == 'filter') {
+ $form_state->setRedirect('redirect_404.fix_404', [], ['query' => ['search' => trim($form_state->getValue('filter'))]]);
+ }
+ else {
+ $form_state->setRedirect('redirect_404.fix_404');
+ }
+ }
+
+}