Commit af0e556f authored by Ben Harris's avatar Ben Harris Committed by eli.stone
Browse files

Issue #3077634 by rp7, Glottus, Skymen: Display a link to the entity having the not-unique value

parent 86330c8b

unique_field_ajax.module

+38 −12
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ use Drupal\Component\Utility\NestedArray; 
use Drupal\Core\Form\FormStateInterface;

use Drupal\Core\Routing\RouteMatchInterface;

use Drupal\field\Entity\FieldConfig;

use Drupal\Core\Cache\CacheableMetadata;



/**

 * Implements hook_help().
@@ -80,7 +81,7 @@ function unique_field_ajax_form_field_config_edit_form_alter(&$form, FormStateIn 
      $form['third_party_settings']['unique_field_ajax']['message'] = array(

        '#type' => 'textarea',

        '#title' => t("Error message"),

        '#description' => t("The message to show under the field when the value is not unique"),

        '#description' => t("The message to show under the field when the value is not unique. The placeholder <em>%link</em> can be used to display a link to the entity already having the value."),

        '#default_value' => $field->getThirdPartySetting('unique_field_ajax', 'message'),

        '#weight' => -7,

        '#states' => array(
@@ -182,7 +183,32 @@ function _unique_field_ajax_process($element, FormStateInterface &$form_state, & 
  if (empty($message)) {

    $message = t('This field has to be unique.');

  }

  if (!$valid) {



  if ($valid !==  TRUE) {

    if (strpos($message, '%link') !== FALSE) {

      $replacement = '<em>' . t('Unknown') . '</em>';



      $entity_with_value = \Drupal::entityTypeManager()

        ->getStorage($entity->getEntityTypeId())

        ->load($valid);



      if ($entity_with_value && $entity_with_value->access('view')) {

        $link = $entity_with_value->toLink(NULL, 'canonical', [

          'attributes' => [

            '_target' => 'blank',

          ],

        ]);

        $replacement = $link->toString();

        $link

          ->getUrl()

          ->toString(TRUE)

          ->applyTo($element);

        CacheableMetadata::createFromObject($entity_with_value)->applyTo($element);

      }



      $message = str_replace('%link', $replacement, $message);

    }



    $element['value']['#attributes']['class'][] = 'error';

    $element['value']['#attributes']['aria-invalid'] = 'true';

    $element['value']['#suffix'] = '<div class="error">' . $message . '</div>' . $element['value']['#suffix'];
@@ -213,7 +239,7 @@ function unique_field_ajax_validate_unique($element, FormStateInterface $form_st 


  // If field is not unique set error.

  $valid = unique_field_ajax_is_unique($entity_type, $langcode, $field_name, $value[0]['value'], $entity->bundle(), $element['#unique_field_ajax_settings']['per_lang'], $entity);

  if (!$valid) {

  if ($valid !== TRUE) {

    $form_state->setErrorByName($field_name, $message);

    $form_state->setRebuild();

  }
@@ -229,7 +255,9 @@ function unique_field_ajax_validate_unique($element, FormStateInterface $form_st 
 * @param $bundle

 * @param $is_unique_per_lang

 *

 * @return array|int

 * @return bool|string

 *   Boolean TRUE if the value is unique. In any other case, the entity ID of

 *   the entity that has the same value.

 */

function unique_field_ajax_is_unique($entity_type, $langcode, $field_name, $field_value, $bundle, $is_unique_per_lang, $entity) {
@@ -237,8 +265,13 @@ function unique_field_ajax_is_unique($entity_type, $langcode, $field_name, $fiel 
    ->getDefinition($entity_type);



  $query = Drupal::entityQuery($entity_type)

    ->range(0, 1)

    ->condition($field_name, $field_value, '=');



  if (!$entity->isNew()) {

    $query->condition($entity_type_definition->getKey('id'), $entity->id(), '<>');

  }



  // Test if the entity has a bundle.

  if (!empty($entity_type_definition->getKey('bundle'))) {

    $query->condition($entity_type_definition->getKey('bundle'), $bundle, '=');
@@ -252,14 +285,7 @@ function unique_field_ajax_is_unique($entity_type, $langcode, $field_name, $fiel 
  $entities = $query->execute();



  if (!empty($entities)) {

    if ($id = $entity->id()) {

      if (!in_array($id, $entities)) {

        return FALSE;

      }

    }

    else {

      return FALSE;

    }

    return array_shift($entities);

  }



  return TRUE;