protected function FlippingBookIframeFormatter::viewValue in Flipping Book 8

Generate the output appropriate for one field item.

Parameters

\Drupal\Core\Field\FieldItemInterface $item: One field item.

Return value

string The textual output generated.

1 call to FlippingBookIframeFormatter::viewValue()

FlippingBookIframeFormatter::viewElements in src/Plugin/Field/FieldFormatter/FlippingBookIframeFormatter.php

Builds a renderable array for a field value.

File

src/Plugin/Field/FieldFormatter/FlippingBookIframeFormatter.php, line 104

Class

FlippingBookIframeFormatter

Plugin implementation of the 'flipping_book_iframe_formatter' formatter.

Namespace

Drupal\flipping_book\Plugin\Field\FieldFormatter

Code

protected function viewValue(FieldItemInterface $item) {
  $value = $item
    ->getValue();
  if (empty($value['target_id'])) {
    return NULL;
  }
  $flipping_book = $item
    ->getRoot()
    ->getValue();
  $settings = $this
    ->getSettings();
  $url = \Drupal::service('flipping_book')
    ->buildFlippingBookUrl($flipping_book)
    ->toUriString();
  return '<iframe class="' . $settings['class'] . '" width="' . $settings['width'] . '" height="' . $settings['height'] . '" src="' . $url . '" frameborder="0" allowfullscreen></iframe>';
}