public function FormatIntervalFormatter::viewElements in Date 8

Implements Drupal\field\Plugin\Type\Formatter\FormatterInterface::viewElements().

Useful values:

$entity->date_id If set, this will show only an individual date on a field with multiple dates. The value should be a string that contains the following values, separated with periods:

• module name of the module adding the item
• node nid
• field name
• delta value of the field to be displayed
• other information the module's custom theme might need

Used by the calendar module and available for other uses. example: 'date:217:field_date:3:test'

$entity->date_repeat_show If true, tells the theme to show all the computed values of a repeating date. If not true or not set, only the start date and the repeat rule will be displayed.

File

lib/Drupal/date/Plugin/field/formatter/FormatIntervalFormatter.php, line 59

Definition of Drupal\date\Plugin\field\formatter\FormatIntervalFormatter.

Class

FormatIntervalFormatter

Plugin implementation of the 'format_interval'' formatter.

Namespace

Drupal\date\Plugin\field\formatter

Code

public function viewElements(EntityInterface $entity, $langcode, array $items) {
  $field = $this->field;
  $instance = $this->instance;
  $settings = $this->settings;
  $view_mode = $this->viewMode;
  $weight = $this->weight;
  $label = $this->label;
  $definition = $this
    ->getDefinition();
  $formatter = $definition['id'];
  $elements = array();
  $variables = array(
    'entity' => $entity,
    'field' => $field,
    'instance' => $instance,
    'langcode' => $langcode,
    'items' => $items,
    'dates' => array(),
    'attributes' => array(),
    'rdf_mapping' => array(),
    'add_rdf' => module_exists('rdf'),
  );

  // If there is an RDf mapping for this date field, pass it down to the theme.
  $rdf_mapping = array();
  if (!empty($entity->rdf_mapping) && function_exists('rdf_rdfa_attributes')) {
    if (!empty($entity->rdf_mapping[$field['field_name']])) {
      $variables['rdf_mapping'] = $rdf_mapping = $entity->rdf_mapping[$field['field_name']];
    }
  }

  // Give other modules a chance to prepare the entity before formatting it.
  drupal_alter('date_formatter_pre_view', $entity, $variables);

  // See if we are only supposed to display a selected
  // item from multiple value date fields.
  $selected_deltas = array();
  if (!empty($entity->date_id)) {
    foreach ((array) $entity->date_id as $key => $id) {
      list($module, $nid, $field_name, $selected_delta, $other) = explode('.', $id . '.');
      if ($field_name == $field['field_name']) {
        $selected_deltas[] = $selected_delta;
      }
    }
  }
  foreach ($items as $delta => $item) {
    if (!empty($entity->date_id) && !in_array($delta, $selected_deltas)) {
      continue;
    }
    else {
      $variables['delta'] = $delta;
      $variables['item'] = $item;
      $variables['dates'] = date_formatter_process($formatter, $entity, $field, $instance, $langcode, $item, $settings);
      $variables['attributes'] = !empty($rdf_mapping) ? rdf_rdfa_attributes($rdf_mapping, $item['value']) : array();
      $elements[$delta] = array(
        '#markup' => theme('date_display_interval', $variables),
      );
    }
  }
  return $elements;
}