function image_replace_form_field_config_edit_form_element_validate in Image Replace 8

Form element validation callback.

Displays a warning when replacement mapping is changed for fields with existing content.

1 string reference to 'image_replace_form_field_config_edit_form_element_validate'

image_replace_form_field_config_edit_form_alter in ./image_replace.module

Implements hook_form_FORM_ID_alter() for 'field_config_edit_form'.

File

./image_replace.module, line 65

Provides an image style effect replacing the whole image with another one.

Code

function image_replace_form_field_config_edit_form_element_validate($element, &$form_state, $form) {
  $field = $form_state
    ->getFormObject()
    ->getEntity();
  $field_storage = FieldStorageConfig::loadByName($field
    ->getTargetEntityTypeId(), $field
    ->getName());
  if ($field_storage
    ->hasData()) {
    $changed = FALSE;
    foreach (array_keys(_image_replace_style_options()) as $image_style) {
      $current_value = $element['image_style_map'][$image_style]['source_field']['#default_value'];
      $new_value = $element['image_style_map'][$image_style]['source_field']['#value'];
      if (!(empty($current_value) && empty($new_value)) && $current_value != $new_value) {
        $changed = TRUE;
        break;
      }
    }
    if ($changed) {
      $messenger = \Drupal::messenger();
      $messenger
        ->addWarning(t('The image replacement settings have been modified. As a result, it is necessary to rebuild the image replacement mapping for existing content. Note: The replacement mapping is updated automatically when saving an entity. Content can be resaved in bulk using the <em>save content</em> of the <a href="@content_url">administrative interface</a>', [
        '@content_url' => '/admin/content',
      ]));
      $messenger
        ->addWarning(t('Also note that images already might be cached in the browser or by any intermediate HTTP cache. On live sites the only way to force browsers to redownload a cached image is to reupload the image with a different name.'));
    }
  }
}