
创建和定制WordPress导航菜单的深入浅出教程
wp_filter_wp_template_unique_post_slug ( $override_slug, $slug, $post_ID, $post_status, $post_type )
wp_filter_wp_template_unique_post_slug:这个过滤器是用来修改为一个文章生成的唯一lug。它把唯一的lug作为参数,并返回修改后的唯一lug。
为模板生成一个独特的slug。
function wp_filter_wp_template_unique_post_slug( $override_slug, $slug, $post_ID, $post_status, $post_type ) { if ( 'wp_template' !== $post_type && 'wp_template_part' !== $post_type ) { return $override_slug; } if ( ! $override_slug ) { $override_slug = $slug; } /* * Template slugs must be unique within the same theme. * TODO - Figure out how to update this to work for a multi-theme environment. * Unfortunately using `get_the_terms()` for the 'wp-theme' term does not work * in the case of new entities since is too early in the process to have been saved * to the entity. So for now we use the currently activated theme for creation. */ $theme = wp_get_theme()->get_stylesheet(); $terms = get_the_terms( $post_ID, 'wp_theme' ); if ( $terms && ! is_wp_error( $terms ) ) { $theme = $terms[0]->name; } $check_query_args = array( 'post_name__in' => array( $override_slug ), 'post_type' => $post_type, 'posts_per_page' => 1, 'no_found_rows' => true, 'post__not_in' => array( $post_ID ), 'tax_query' => array( array( 'taxonomy' => 'wp_theme', 'field' => 'name', 'terms' => $theme, ), ), ); $check_query = new WP_Query( $check_query_args ); $posts = $check_query->posts; if ( count( $posts ) > 0 ) { $suffix = 2; do { $query_args = $check_query_args; $alt_post_name = _truncate_post_slug( $override_slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix"; $query_args['post_name__in'] = array( $alt_post_name ); $query = new WP_Query( $query_args ); $suffix++; } while ( count( $query->posts ) > 0 ); $override_slug = $alt_post_name; } return $override_slug; }