Reply To: How to use WP Term Meta, the easy way!

• [email protected]

• March 7, 2016 at 1:30 pm

@truheart

@edir

Here is an even better way. It clears out the options table. so you aren’t double saving values. And if ACF ever decides to start using the termmeta table you will be all set and can just remove these functions.

You would want to modify the “if ( $field_group[‘location’][0][0][‘param’] == ‘taxonomy’ )” line if you were using complex location rules.

add_action( 'acf/init', 'prefix_acf_init' );
/**
 * Prepare for any crazy stuff we are about to do
 */
function prefix_acf_init() {
	global $prefix_acf_delete_values;

	$prefix_acf_delete_values = [ ];
}

add_action( 'acf/save_post', 'prefix_after_save_post', 100001 );
/**
 * Cleanup after everything is done
 */
function prefix_after_save_post() {
	global $prefix_acf_delete_values;

	if ( ! empty( $prefix_acf_delete_values ) ) {
		foreach ( $prefix_acf_delete_values as $delete ) {
			acf_delete_value( $delete['post_id'], $delete['field'] );
		}
	}
}

add_filter( 'acf/update_value', 'prefix_update_term_meta', 10, 3 );
/**
 * Update term meta based on ACF term meta fields
 *
 * @param $value
 * @param $post_id
 * @param $field
 *
 * @return
 */
function prefix_update_term_meta( $value, $post_id, $field ) {
	global $prefix_acf_delete_values;

	$field_group = acf_get_field_group( $field['parent'] );

	if ( $field_group['location'][0][0]['param'] == 'taxonomy' ) {
		$term_id = intval( filter_var( $post_id, FILTER_SANITIZE_NUMBER_INT ) );

		if ( $term_id > 0 ) {
			$update_term_meta = update_term_meta( $term_id, $field['name'], $value );

			if ( ! is_wp_error( $update_term_meta ) )
				$prefix_acf_delete_values[ $field['key'] ] = [ 'post_id' => $post_id, 'field' => $field ];
		}
	}

	return $value;
}

add_filter( 'acf/load_value', 'prefix_load_term_meta', 10, 3 );
/**
 * Load term meta in for ACF meta fields
 *
 * @param $value
 * @param $post_id
 * @param $field
 *
 * @return mixed
 */
function prefix_load_term_meta( $value, $post_id, $field ) {
	$field_group = acf_get_field_group( $field['parent'] );

	if (
		$field_group['location'][0][0]['param'] == 'taxonomy' ||
		(
			! in_array( $post_id, [ 'option', 'options' ] ) &&
			! $field_group &&
			strpos( $post_id, '_' ) !== false
		)
	) {
		$term_id = intval( filter_var( $post_id, FILTER_SANITIZE_NUMBER_INT ) );

		if ( $term_id > 0 ) {
			$value = get_term_meta( $term_id, $field['name'], true );
		}
	}

	return $value;
}