public function PadoAddToCartForm::buildForm in Commerce Product Add-on 8

Form constructor.

Parameters

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

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

Return value

array The form structure.

Overrides AddToCartForm::buildForm

File

src/Form/PadoAddToCartForm.php, line 61

Class

PadoAddToCartForm

Provides the order item add to cart form.

Namespace

Drupal\commerce_pado\Form

Code

public function buildForm(array $form, FormStateInterface $form_state) {
  $form = parent::buildForm($form, $form_state);
  $form['#theme'][] = 'commerce_pado_add_to_cart_form';

  // Add add-ons.
  $field_name = $form_state
    ->get([
    'settings',
    'add_on_field',
  ]);

  /** @var \Drupal\commerce_product\Entity\ProductInterface $product */
  $product = $form_state
    ->get('product');
  $multiple = $form_state
    ->get([
    'settings',
    'multiple',
  ]);
  $variation_storage = $this->entityTypeManager
    ->getStorage('commerce_product_variation');
  $view_builder = $this->entityTypeManager
    ->getViewBuilder('commerce_product_variation');
  $form['add_ons'] = [
    '#type' => 'container',
    '#tree' => TRUE,
    '#weight' => 50,
  ];

  /** @var \Drupal\commerce_product\Entity\ProductInterface $add_on_product */
  foreach ($product->{$field_name}
    ->referencedEntities() as $add_on_product) {
    $variations = $variation_storage
      ->loadEnabled($add_on_product);
    $variations_view_render = $view_builder
      ->viewMultiple($variations, 'add_on');
    $options = [];
    $add_ons = [];
    foreach ($variations as $key => $add_on_variation) {

      /** @var \Drupal\commerce_product\Entity\ProductVariationInterface $add_on_variation */
      $add_on_variation_id = $add_on_variation
        ->id();
      $add_on_variation_title = [
        '#theme' => 'commerce_pado_addon_product_variation_label',
        '#product_entity' => $add_on_product,
        '#variation_entity' => $add_on_variation,
      ];
      $options[$add_on_variation_id] = $this->renderer
        ->render($add_on_variation_title);
      $add_ons[$add_on_variation_id]['#description'] = $variations_view_render[$key];
    }
    $addon_product_title = [
      '#theme' => 'commerce_pado_addon_product_label',
      '#product_entity' => $add_on_product,
    ];
    if (!empty($options)) {
      if (count($options) > 1) {
        $form['add_ons']['items']['add_ons_' . $add_on_product
          ->id()] = [
          '#type' => $multiple ? 'checkboxes' : 'select',
          '#options' => $options,
          '#title' => $this->renderer
            ->render($addon_product_title),
          '#empty_value' => '',
          '#empty_option' => t('- None -'),
        ] + $add_ons;
      }
      else {
        $form['add_ons']['items']['add_ons_' . $add_on_product
          ->id()] = [
          '#type' => 'checkbox',
          '#title' => $this->renderer
            ->render($addon_product_title),
          '#return_value' => key($options),
        ] + $add_ons;
      }
    }
  }
  return $form;
}