Reply To: Archive with ajax custom field filter : Error 500

• 24prod

• May 3, 2019 at 6:33 pm

No problem. I updated my code :

$GLOBALS['my_query_filters'] = array(
	'field_5cb6ef1f75209'  => 'alcool',
);

// 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;

	// get meta query
	$meta_query = $query->get('meta_query');

	// loop over filters
	foreach( $GLOBALS['my_query_filters'] as $key => $name ) {

		// continue if not found in url
		if( empty($_GET[ $name ]) ) {

			continue;

		}

		// get the value for this filter
		// eg: http://www.website.com/events?city=melbourne,sydney
		$value = explode(',', $_GET[ $name ]);

		// append meta query
		$meta_query = array(
			array(
				'key'     => $name,
				'value'       => $value,
				'compare'  => 'IN',
			)
		);

	}

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

}

But it doesn’t work. I don’t have any result when I select a checkbox filter. I think checkbox field is stored as serialized array, so I can not use the IN operator and array (if I select multiple checkbox filters).
I think I have to create a loop with an OR relation in my meta_query.