function BlockListBuilder::validateForm

Form validation handler.

Parameters

array $form: An associative array containing the structure of the form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Overrides FormInterface::validateForm

File

core/modules/block/src/BlockListBuilder.php, line 374

Class

BlockListBuilder

Defines a class to build a listing of block entities.

Namespace

Code

public function validateForm(array &$form, FormStateInterface $form_state) {
    if (empty($form_state->getValue('blocks'))) {
        $form_state->setErrorByName('blocks', $this->t('No blocks settings to update.'));
    }
}