'portfolio_item', 'posts_per_page' => -1 ); $portfolio_query = new WP_Query($args); if( $portfolio_query->have_posts() ) : while( $portfolio_query->have_posts() ) : $portfolio_query->the_post(); ?> slug); $term_list .= ' '; $term_lists[] = $term->slug; } } $term_lists = json_encode( $term_lists ); ?>