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- <?php
- /**
- ** look up and index a value from a post relationship field
- ** set the datasource to the relationship field
- ** get the post id of that related post and use it to
- ** lookup its associated value
- ** for ACF you may want get_field() instead of get_post_meta()
- ** remember to do a full re-index after adding code
- ** check the wp_facetwp_index table if needed to see what values are being indexed
- **/
- add_filter( 'facetwp_index_row', function( $params, $class ) {
- if ( 'my_facet' == $params['facet_name'] ) { // change my_facet to name of your facet
- $related_post_id = $params['facet_value']; // depnding on how your relationship field saves its data this might need to be changed or looked up from a different value
- $params['facet_display_value'] = get_post_meta( $related_post_id, 'some_custom_field', true ); // lookup custom field
- $params['facet_value'] = $params['facet_display_value'];
- }
- return $params;
- }, 10, 2 );
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