Reply To: GET (url) parameters for data arrays?

• jack1

• September 12, 2015 at 11:15 pm

Hi John, thanks for this, I didn’t know they were treated similar to a relationship. Here is my current functions.php code based on Elliot’s tutorial:

// array of filters (field key => field name)
$GLOBALS['my_query_filters'] = array( 
	'example_field'   => 'example1', 
	'example_field_two'  =>   'example2',
	//'music-taste' => 'music-taste' (this is what I'm trying to make work)
);

// 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(
            'key'		=> $name,
            'value'		=> $value,
            'compare'	=> 'IN',
        );  
	} 
	// update meta query
	$query->set('meta_query', $meta_query);
}

I’m unsure of how to incorporate your suggested code, being as my working queries are ‘compare’ => ‘IN’, and my checkboxes need to be ‘compare’ => ‘LIKE’.

Many thanks!