geolocation-8.x-3.x-dev/src/Plugin/views/sort/ProximitySort.php

<?php

namespace Drupal\geolocation\Plugin\views\sort;

use Drupal\views\Attribute\ViewsSort;
use Drupal\views\Plugin\views\query\Sql;
use Drupal\views\Plugin\views\sort\SortPluginBase;

/**
 * Sort handler for geolocation field.
 *
 * @ingroup views_sort_handlers
 */
#[ViewsSort(id: 'geolocation_sort_proximity')]
class ProximitySort extends SortPluginBase {

  /**
   * {@inheritdoc}
   */
  public function query(): void {
    if (!($this->query instanceof Sql)) {
      return;
    }

    /** @var \Drupal\views\Plugin\views\field\FieldHandlerInterface $field */
    $field = $this->displayHandler->getHandler('field', $this->field);

    if (!empty($field->field_alias) && $field->field_alias != 'unknown') {
      // @phpstan-ignore-next-line
      $this->query->addOrderBy(NULL, NULL, $this->options['order'], $field->field_alias);
      if (!empty($field->tableAlias)) {
        $this->tableAlias = $field->tableAlias;
      }
    }
  }

}