Well, if it can help somebody, this is my working code :
// array of filters (field key => field name)
$GLOBALS['my_query_filters'] = array(
'field_5cb6ef1f75209' => 'alcool',
'field_5cb74afb68539' => 'caracteristiques',
);
// action
add_action('pre_get_posts', 'my_pre_get_posts', 10, 1);
function my_pre_get_posts( $query ) {
// bail early if is in admin
if( is_admin() ) return;
// bail early if not main query
// - allows custom code / plugins to continue working
//if( !$query->is_main_query() ) return;
// get meta query
$meta_query = $query->get('meta_query');
// loop over filters
$meta_query = array(
'relation' => 'AND',
);
$i = 0;
foreach( $GLOBALS['my_query_filters'] as $key => $name ) {
// continue if not found in url
if( empty($_GET[ $name ]) ) {
continue;
}
$i++;
$meta_query[$i] = array(
'relation' => 'OR',
);
// get the value for this filter
$values = explode( ",", $_GET[ $name ] );
foreach( $values as $value ) {
$meta_query[$i][] = array(
'key' => $name,
'value' => $value,
'compare' => 'LIKE',
);
}
}
// update meta query
$query->set('meta_query', $meta_query);
return;
}
Just a question, is there a way to “ajaxify” this ? With no page reload ?
