wc_pf_query_args
You can override query arguments via this filter hook function wc_pf_query_args_custom_field($args, $form_data){ //default search query $args[‘s’] = isset($form_data[‘keyword’]) ? $form_data[‘keyword’] : ”; return $args; } add_action(‘wc_pf_query_args’, ‘wc_pf_query_args_custom_field’); You can see the query parameter details here