commerce-8.x-2.8/modules/promotion/src/Form/PromotionForm.php

<?php

namespace Drupal\commerce_promotion\Form;

use Drupal\Core\Entity\ContentEntityForm;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Link;

/**
 * Defines the promotion add/edit form.
 */
class PromotionForm extends ContentEntityForm {

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    // Skip building the form if there are no available stores.
    $store_query = $this->entityManager->getStorage('commerce_store')->getQuery();
    if ($store_query->count()->execute() == 0) {
      $link = Link::createFromRoute('Add a new store.', 'entity.commerce_store.add_page');
      $form['warning'] = [
        '#markup' => t("Promotions can't be created until a store has been added. @link", ['@link' => $link->toString()]),
      ];
      return $form;
    }

    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function form(array $form, FormStateInterface $form_state) {
    /* @var \Drupal\commerce_promotion\Entity\Promotion $promotion */
    $promotion = $this->entity;

    $form = parent::form($form, $form_state);
    $form['#tree'] = TRUE;
    $form['#theme'] = ['commerce_promotion_form'];
    $form['#attached']['library'][] = 'commerce_promotion/form';

    $form['advanced'] = [
      '#type' => 'container',
      '#attributes' => ['class' => ['entity-meta']],
      '#weight' => 99,
    ];
    $form['option_details'] = [
      '#type' => 'container',
      '#title' => $this->t('Options'),
      '#group' => 'advanced',
      '#attributes' => ['class' => ['entity-meta__header']],
      '#weight' => -100,
    ];
    $form['date_details'] = [
      '#type' => 'details',
      '#open' => TRUE,
      '#title' => $this->t('Dates'),
      '#group' => 'advanced',
    ];
    $form['usage_details'] = [
      '#type' => 'details',
      '#open' => TRUE,
      '#title' => $this->t('Usage limits'),
      '#group' => 'advanced',
    ];
    $form['compatibility_details'] = [
      '#type' => 'details',
      '#open' => TRUE,
      '#title' => $this->t('Compatibility'),
      '#group' => 'advanced',
    ];

    $field_details_mapping = [
      'status' => 'option_details',
      'weight' => 'option_details',
      'order_types' => 'option_details',
      'stores' => 'option_details',
      'start_date' => 'date_details',
      'end_date' => 'date_details',
      'usage_limit' => 'usage_details',
      'compatibility' => 'compatibility_details',
    ];
    foreach ($field_details_mapping as $field => $group) {
      if (isset($form[$field])) {
        $form[$field]['#group'] = $group;
      }
    }

    // By default an offer is preselected on the add form because the field
    // is required. Select an empty value instead, to force the user to choose.
    if ($this->entity->isNew() && !empty($form['offer']['widget'][0]['target_plugin_id'])) {
      $form['offer']['widget'][0]['target_plugin_id']['#empty_value'] = '';
      $form['offer']['widget'][0]['target_plugin_id']['#default_value'] = '';
      if (!$form_state->isRebuilding()) {
        unset($form['offer']['widget'][0]['target_plugin_configuration']);
      }
    }

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  protected function actions(array $form, FormStateInterface $form_state) {
    $actions = parent::actions($form, $form_state);

    if ($this->entity->isNew()) {
      $actions['submit_continue'] = [
        '#type' => 'submit',
        '#value' => $this->t('Save and add coupons'),
        '#continue' => TRUE,
        '#submit' => ['::submitForm', '::save'],
      ];
    }

    return $actions;
  }

  /**
   * {@inheritdoc}
   */
  public function save(array $form, FormStateInterface $form_state) {
    $this->entity->save();
    $this->messenger()->addMessage($this->t('Saved the %label promotion.', ['%label' => $this->entity->label()]));

    if (!empty($form_state->getTriggeringElement()['#continue'])) {
      $form_state->setRedirect('entity.commerce_promotion_coupon.collection', ['commerce_promotion' => $this->entity->id()]);
    }
    else {
      $form_state->setRedirect('entity.commerce_promotion.collection');
    }
  }

}