stringTranslation = $string_translation; $this->linkGenerator = $link_generator; $this->renderer = $renderer; } /** * Loops through and displays all form errors. * * To disable inline form errors for an entire form set the * #disable_inline_form_errors property to TRUE on the top level of the $form * array: * @code * $form['#disable_inline_form_errors'] = TRUE; * @endcode * This should only be done when another appropriate accessibility strategy is * in place. * * @param array $form * An associative array containing the structure of the form. * @param \Drupal\Core\Form\FormStateInterface $form_state * The current state of the form. */ protected function displayErrorMessages(array $form, FormStateInterface $form_state) { // Skip generating inline form errors when opted out. if (!empty($form['#disable_inline_form_errors'])) { parent::displayErrorMessages($form, $form_state); return; } $error_links = []; $errors = $form_state->getErrors(); // Loop through all form errors and check if we need to display a link. foreach ($errors as $name => $error) { $form_element = FormElementHelper::getElementByName($name, $form); $title = FormElementHelper::getElementTitle($form_element); // Only show links to erroneous elements that are visible. $is_visible_element = Element::isVisibleElement($form_element); // Only show links for elements that have a title themselves or have // children with a title. $has_title = !empty($title); // Only show links for elements with an ID. $has_id = !empty($form_element['#id']); // Do not show links to elements with suppressed messages. Most often // their parent element is used for inline errors. if (!empty($form_element['#error_no_message'])) { unset($errors[$name]); } elseif ($is_visible_element && $has_title && $has_id) { $error_links[] = $this->l($title, Url::fromRoute('', [], ['fragment' => $form_element['#id'], 'external' => TRUE])); unset($errors[$name]); } } // Set normal error messages for all remaining errors. foreach ($errors as $error) { $this->drupalSetMessage($error, 'error'); } if (!empty($error_links)) { $render_array = [ [ '#markup' => $this->formatPlural(count($error_links), '1 error has been found: ', '@count errors have been found: '), ], [ '#theme' => 'item_list', '#items' => $error_links, '#context' => ['list_style' => 'comma-list'], ], ]; $message = $this->renderer->renderPlain($render_array); $this->drupalSetMessage($message, 'error'); } } }