Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\datetime_range;
Chris@0: 
Chris@0: use Drupal\Core\Field\FieldItemListInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Provides friendly methods for datetime range.
Chris@0:  */
Chris@0: trait DateTimeRangeTrait {
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function viewElements(FieldItemListInterface $items, $langcode) {
Chris@0:     $elements = [];
Chris@0:     $separator = $this->getSetting('separator');
Chris@0: 
Chris@0:     foreach ($items as $delta => $item) {
Chris@0:       if (!empty($item->start_date) && !empty($item->end_date)) {
Chris@0:         /** @var \Drupal\Core\Datetime\DrupalDateTime $start_date */
Chris@0:         $start_date = $item->start_date;
Chris@0:         /** @var \Drupal\Core\Datetime\DrupalDateTime $end_date */
Chris@0:         $end_date = $item->end_date;
Chris@0: 
Chris@0:         if ($start_date->getTimestamp() !== $end_date->getTimestamp()) {
Chris@0:           $elements[$delta] = [
Chris@0:             'start_date' => $this->buildDateWithIsoAttribute($start_date),
Chris@0:             'separator' => ['#plain_text' => ' ' . $separator . ' '],
Chris@0:             'end_date' => $this->buildDateWithIsoAttribute($end_date),
Chris@0:           ];
Chris@0:         }
Chris@0:         else {
Chris@0:           $elements[$delta] = $this->buildDateWithIsoAttribute($start_date);
Chris@0: 
Chris@0:           if (!empty($item->_attributes)) {
Chris@0:             $elements[$delta]['#attributes'] += $item->_attributes;
Chris@0:             // Unset field item attributes since they have been included in the
Chris@0:             // formatter output and should not be rendered in the field template.
Chris@0:             unset($item->_attributes);
Chris@0:           }
Chris@0:         }
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     return $elements;
Chris@0:   }
Chris@0: 
Chris@0: }