public function AmazonFieldFormatter::viewElements in Amazon Product Advertisement API 8.2

Builds a renderable array for a field value.

Parameters

\Drupal\Core\Field\FieldItemListInterface $items: The field values to be rendered.

string $langcode: The language that should be used to render the field.

Return value

array A renderable array for $items, as an array of child elements keyed by consecutive numeric indexes starting from 0.

Overrides FormatterInterface::viewElements

File

modules/amazon_field/src/Plugin/Field/FieldFormatter/AmazonFieldFormatter.php, line 122

Class

AmazonFieldFormatter

Plugin implementation of the 'amazon_field_formatter' formatter.

Namespace

Drupal\amazon_field\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $elements = [];
  $asins = [];
  foreach ($items as $delta => $item) {
    if (!$item
      ->isEmpty()) {
      $asins[$item->value] = $item->value;
    }
  }

  // Nothing to render.
  if (empty($asins)) {
    return $elements;
  }
  $associatesId = \Drupal::config('amazon.settings')
    ->get('associates_id');
  $amazon = new Amazon($associatesId);

  // Include Small and Images response groups along with any specified.
  $responseGroups = [
    'Small',
    'Images',
  ];
  if (!empty($this
    ->getSettings()['advanced']['extraResponseGroups'])) {
    $responseGroups = array_merge($responseGroups, explode("\n", $this
      ->getSettings()['advanced']['extraResponseGroups']));
  }
  $results = $amazon
    ->lookup($asins, $responseGroups);

  // No results from Amazon.
  if (empty($results[0])) {
    return $elements;
  }
  $max_age = $this
    ->getSetting('max_age');
  $basicBuild = [
    '#max_age' => $max_age,
  ];

  // Use the correct Twig template based on the "template" specified.
  switch (strtolower($this
    ->getSetting('template'))) {
    case 'inline':
      $basicBuild['#theme'] = 'amazon_inline';
      break;
    case 'image_small':
      $basicBuild['#theme'] = 'amazon_image';
      $basicBuild['#size'] = 'small';
      break;
    case 'image_medium':
      $basicBuild['#theme'] = 'amazon_image';
      $basicBuild['#size'] = 'medium';
      break;
    case 'image_large':
      $basicBuild['#theme'] = 'amazon_image';
      $basicBuild['#size'] = 'large';
      break;
    default:

      // Unknown template specified.
      return $elements;
  }

  // Add some template suggestions. Note these won't show up in the template
  // debug code until https://www.drupal.org/node/2118743 is fixed.
  $basicBuild['#bundle'] = $this->fieldDefinition
    ->getTargetBundle();
  $basicBuild['#field'] = $this->fieldDefinition
    ->getName();
  foreach ($results as $delta => $result) {
    $elements[$delta] = $basicBuild + [
      '#results' => $result,
    ];
  }
  return $elements;
}