TermDeleteForm

<?php

/**
* @file
* Contains \Drupal\example_module\Form\TermDeleteForm.
*/

namespace Drupal\example_module\Form;

use Drupal\Core\Entity\ContentEntityConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;

/**
* Provides a form for deleting a content_entity_example entity.
*
* @ingroup dictionary
*/
class TermDeleteForm extends ContentEntityConfirmFormBase {

    /**
    * {@inheritdoc}
    */
    public function getQuestion() {
        return $this->t('Are you sure you want to delete entity %name?', array('%name' => $this->entity->label()));
    }

    /**
    * {@inheritdoc}
    *
    * If the delete command is canceled, return to the contact list.
    */
    public function getCancelUrl() {
        return new Url('entity.dictionary_term.collection');
    }

    /**
    * {@inheritdoc}
    */
    public function getConfirmText() {
        return $this->t('Delete');
    }

    /**
    * {@inheritdoc}
    *
    * Delete the entity and log the event. logger() replaces the watchdog.
    */
    public function submitForm(array &$form, FormStateInterface $form_state) {
        $entity = $this->getEntity();
        $entity->delete();

        $this->logger('dictionary')->notice('deleted %title.',
            array(
                '%title' => $this->entity->label(),
            )
        );
        // Redirect to term list after delete.
        $form_state->setRedirect('entity.dictionary_term.collection');
    }

}