GroupByNumeric.php

<?php

namespace Drupal\views\Plugin\views\argument;

use Drupal\views\Attribute\ViewsArgument;

/**
 * Simple handler for arguments using group by.
 *
 * @ingroup views_argument_handlers
 */
class GroupByNumeric extends ArgumentPluginBase {
    public function query($group_by = FALSE) {
        $this->ensureMyTable();
        $field = $this->getField();
        $placeholder = $this->placeholder();
        $this->query
            ->addHavingExpression(0, "{$field} = {$placeholder}", [
            $placeholder => $this->argument,
        ]);
    }
    public function adminLabel($short = FALSE) {
        return $this->getField(parent::adminLabel($short));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getSortName() {
        return $this->t('Numerical', [], [
            'context' => 'Sort order',
        ]);
    }

}