protected function configureDatagridFilters(DatagridMapper $datagridMapper)
{
    $now  = new \DateTime();
    $historyStart = new \DateTime('Dec 20 2016');
    $dateFormat = 'd.m.y H';

    $datagridMapper
        ->add(
            'remoteCreatedAt',
            'doctrine_orm_datetime_range',
            ['show_filter' => true,],
            'sonata_type_datetime_range_picker',
            [
                'field_options_start' => [
                    'dp_min_date'     => $historyStart->format($dateFormat),
                    'dp_max_date'     => $now->format($dateFormat),
                    'dp_default_date' => $now->format($dateFormat),
                    'dp_language'     => 'en',
                    'format' => 'dd.MM.yy HH',
                    'datepicker_use_button' => false,
                    'dp_use_minutes' => false,
                    'dp_use_seconds' => false,
                    'dp_side_by_side' => true,
                ],
                'field_options_end' => [
                    'dp_min_date'     => $historyStart->format($dateFormat),
                    'dp_max_date'     => $now->format($dateFormat),
                    'dp_default_date' => $now->format($dateFormat),
                    'dp_language'     => 'en',
                    'format' => 'dd.MM.yy HH',
                    'datepicker_use_button' => false,
                    'dp_use_minutes' => false,
                    'dp_use_seconds' => false,
                    'dp_side_by_side' => true,
                ]
            ]
        );
}