ACF Filter

//ACF Filter

<?php $GLOBALS['my_query_filters'] = array( 
	'field_1'	=> 'city', 
	'field_2'	=> 'vac'
);

add_action('pre_get_posts', 'my_pre_get_posts', 10, 1);

function my_pre_get_posts( $query ) {

	if( is_admin() ) return;

	if( !$query->is_main_query() ) return;

	$meta_query[] = $query->get('meta_query');

	foreach( $GLOBALS['my_query_filters'] as $key => $name ) {

		if( !empty($_GET[ $name ]) ) {

		$value = explode(',', $_GET[ $name ]);

    	$meta_query[] = array(
            'key'		=> $name,
            'value'		=> $value,
            'compare'	=> 'IN',
        );
        }
	} 

	$query->set('meta_query', $meta_query);
	
	return;

} ?>


===========================HTML:========================


<div id="search-houses">
            <?php 
               $field = get_field_object('city');
               $values = explode(',', $_GET['city']);
               $field_2 = get_field_object('vac');
               $values_2 = explode(',', $_GET['vac']);
               
               ?>
            <div class="filterss">
               <div class="filter" data-filter="city">
                  <select class="city">
                     <option value="">Выберите регион</option>
                     <?php foreach( $field['choices'] as $choice_value => $choice_label ): ?>
                     <option value="<?php echo $choice_value; ?>" <?php if( in_array($choice_value, $values) ): ?>selected<?php endif; ?> /> <?php echo $choice_label; ?></option>
                     <?php endforeach; ?>
                  </select>
               </div>
               <div class="filter" data-filter="vac">
                  <select class="vac">
                     <option value="">Выберите категорию</option>
                     <?php foreach( $field_2['choices'] as $choice_value => $choice_label ): ?>
                     <option value="<?php echo $choice_value; ?>" <?php if( in_array($choice_value, $values_2) ): ?>selected<?php endif; ?> /> <?php echo $choice_label; ?></option>
                     <?php endforeach; ?>
                  </select>
               </div>
            </div>
         </div>
         <div class="columns-container vacc">
            <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
            <?php get_template_part('loop-v'); ?>
            <?php endwhile; ?>
            <?php else: echo '<p>По данному запросу вакансий не найдено.</p><p><a class="back" href="' . get_site_url() . '/vacansii/">Вернуться к вакансиям</a></p>'; ?>
            <?php endif; ?>
         </div>

<script>
      jQuery (function($) {
      	
      	$('#search-houses').on('change', 'select', function(){
      		
      		var url = '<?php echo home_url('vacansii'); ?>';
      			args = {};
      
      		$('#search-houses .filter').each(function(){
      			var filter = $(this).data('filter'),
      				vals = [];
      			$(this).find('option:selected').each(function(){
      				vals.push( $(this).val() );
      			});
      			args[ filter ] = vals.join(',');
      		});
      
      		url += '?';
      
      		$.each(args, function( name, value ){
      			url += name + '=' + value + '&';
      		});
      
      		url = url.slice(0, -1);
      		window.location.replace( url );
      
      	});
      
      });	
   </script>