Reply To: Dynamically Set Taxonomy Filter For Post Object Field

• jakeodb

• June 14, 2017 at 1:36 am

I had a similar requirement to yours and found this when searching for a solution.

I have managed to get this working using the acf/fields/post_object/query filter.

The way it brings in the information is a bit harder to debug as it’s all AJAX, but using WP_DEBUG_LOG and error_log to see what data was parsing through helped me come to the solution:

function cxx_event_balance_individual_option( $args, $field, $post_id ) {
	
	// $post_id comes in here as term_# so we need to remove 'term_' to get the term ID
	$prefix = 'term_';
	
	// Also if you are creating a new taxonomy, post_id = 'term_0' so then there's no point in adding a filter
	if ( 'term_0' != $post_id && substr( $post_id, 0, strlen( $prefix )) == $prefix ) {
		// Set $term_id to the ID part of $post_id
		$term_id = substr( $post_id, strlen( $prefix ) );
		
		// And adjust the query to filter by specific taxonomy term
		$args['tax_query'] = array(
			array(
				'taxonomy'  => 'product_event',
				'field'     => 'term_id',
				'terms'     => $term_id,
			),
		);
	}
	return $args;
}

Hope this helps you out.