'post_parent', 'id' => 'ID'); /** * @see Walker::start_el() * @since 2.1.0 * * @param string $output Passed by reference. Used to append additional content. * @param object $page Page data object. * @param int $depth Depth of page in reference to parent pages. Used for padding. * @param array $args Uses 'selected' argument for selected page to set selected HTML attribute for option * element. Uses 'value_field' argument to fill "value" attribute. See {@see wp_dropdown_pages()}. * @param int $id */ public function start_el( &$output, $page, $depth = 0, $args = array(), $id = 0 ) { $pad = str_repeat(' ', $depth * 3); if ( ! isset( $args['value_field'] ) || ! isset( $page->{$args['value_field']} ) ) { $args['value_field'] = 'ID'; } $output .= "\t{$args['value_field']} ) . "\""; if ( $page->ID == $args['selected'] ) $output .= ' selected="selected"'; $output .= '>'; $title = $page->post_title; if ( '' === $title ) { /* translators: %d: ID of a post */ $title = sprintf( __( '#%d (no title)' ), $page->ID ); } /** * Filter the page title when creating an HTML drop-down list of pages. * * @since 3.1.0 * * @param string $title Page title. * @param object $page Page data object. */ $title = apply_filters( 'list_pages', $title, $page ); $output .= $pad . esc_html( $title ); $output .= "\n"; } }