public static function BlockFieldWidget::validate in Block field 8

Form element validation handler.

File

src/Plugin/Field/FieldWidget/BlockFieldWidget.php, line 225

Class

BlockFieldWidget

Plugin implementation of the 'block_field' widget.

Namespace

Drupal\block_field\Plugin\Field\FieldWidget

Code

public static function validate($element, FormStateInterface $form_state, $form) {

  /** @var \Drupal\Core\Block\BlockManagerInterface $block_manager */
  $block_manager = \Drupal::service('plugin.manager.block');
  $values = $form_state
    ->getValues();
  $plugin_id = NestedArray::getValue($values, $element['plugin_id']['#parents']);
  if (!empty($plugin_id) && $block_manager
    ->hasDefinition($plugin_id)) {

    // Clean up configuration settings.
    $settings = NestedArray::getValue($values, $element['settings']['#parents']);

    // Convert label display to FALSE instead of 0. This allow the label to be
    // hidden.
    if ($settings['label_display'] === 0) {
      $settings['label_display'] = FALSE;
    }

    // Execute block validate configuration.
    $block_instance = $block_manager
      ->createInstance($plugin_id, $settings);
    $settings = (new FormState())
      ->setValues($settings);
    $block_instance
      ->validateConfigurationForm($element['settings'], $settings);

    // Pass along errors from the block validation.
    foreach ($settings
      ->getErrors() as $key => $error) {
      $parents = implode('][', $element['settings']['#parents']);

      // If the block form used setError() then the parents will already be
      // part of the key since we are passing along the element in the context
      // of the whole form. If the block form used setErrorByName we need to
      // add the parents in.
      if (strpos($key, $parents) === FALSE) {
        $key = sprintf('%s][%s', $parents, $key);
      }
      $form_state
        ->setErrorByName($key, $error);
    }
    NestedArray::setValue($values, $element['settings']['#parents'], $settings
      ->getValues());
    $form_state
      ->setValues($values);
  }
  else {

    // Clear all configuration settings.
    NestedArray::setValue($values, $element['settings']['#parents'], []);
  }
}