public function ComputedNumericFormatterTrait::viewElements in Computed Field 8.2

Same name and namespace in other branches

1. 3.x src/Plugin/Field/FieldFormatter/ComputedNumericFormatterTrait.php \Drupal\computed_field\Plugin\Field\FieldFormatter\ComputedNumericFormatterTrait::viewElements()

File

src/Plugin/Field/FieldFormatter/ComputedNumericFormatterTrait.php, line 20

Class

ComputedNumericFormatterTrait

Additional formatter trait for computed numeric fields.

Namespace

Drupal\computed_field\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $cache_duration = $this
    ->getSetting('cache_duration');
  $cache_unit = $this
    ->getSetting('cache_unit');
  $elements = [];
  $settings = $this
    ->getFieldSettings();
  foreach ($items as $delta => $item) {
    if ($cache_unit < 0) {
      $value = $item->value;
    }
    else {
      $value = $item
        ->executeCode();
    }
    if (is_null($value)) {
      continue;
    }
    $output = $this
      ->numberFormat($value);

    // Account for prefix and suffix.
    if ($this
      ->getSetting('prefix_suffix')) {
      $prefixes = isset($settings['prefix']) ? array_map([
        'Drupal\\Core\\Field\\FieldFilteredMarkup',
        'create',
      ], explode('|', $settings['prefix'])) : [
        '',
      ];
      $suffixes = isset($settings['suffix']) ? array_map([
        'Drupal\\Core\\Field\\FieldFilteredMarkup',
        'create',
      ], explode('|', $settings['suffix'])) : [
        '',
      ];
      $prefix = count($prefixes) > 1 ? $this
        ->formatPlural($item->value, $prefixes[0], $prefixes[1]) : $prefixes[0];
      $suffix = count($suffixes) > 1 ? $this
        ->formatPlural($item->value, $suffixes[0], $suffixes[1]) : $suffixes[0];
      $output = $prefix . $output . $suffix;
    }

    // Output the raw value in a content attribute if the text of the HTML
    // element differs from the raw value (for example when a prefix is used).
    if (isset($item->_attributes) && $item->value != $output) {
      $item->_attributes += [
        'content' => $item->value,
      ];
    }
    $elements[$delta] = [
      '#markup' => $output,
    ];
    if ($cache_unit >= 0) {
      $elements[$delta] += [
        '#cache' => [
          'keys' => [
            $items
              ->getEntity()
              ->getEntityTypeId(),
            $items
              ->getEntity()
              ->bundle(),
            $this->viewMode,
          ],
          'max-age' => $cache_duration * $cache_unit,
        ],
      ];
    }
  }
  return $elements;
}