tag) the * queried object can be clobbered by a secondary WP_Query during the header * render, so get_queried_object_id() is unreliable there. */ function bw_footer_capture_id() { $GLOBALS['_bw_footer_qid'] = (int) get_queried_object_id(); } add_action( 'wp', 'bw_footer_capture_id' ); /** * Whether the current request's page has a footer background image * (ACF `footer_image_background`, an attachment ID). Resolved once, cached in * a static for the rest of the request. * * The meta is read straight from the DB with $wpdb rather than * get_post_meta(): the post-meta object cache was observed returning this * field empty on some requests for a page that definitely has it set. A direct * indexed lookup is stable and effectively free (one row, once per request). */ function bw_footer_has_image() { static $has = null; if ( null !== $has ) { return $has; } global $wpdb; $id = isset( $GLOBALS['_bw_footer_qid'] ) ? (int) $GLOBALS['_bw_footer_qid'] : (int) get_queried_object_id(); $val = ''; if ( $id ) { $val = (string) $wpdb->get_var( $wpdb->prepare( "SELECT meta_value FROM {$wpdb->postmeta} WHERE post_id = %d AND meta_key = 'footer_image_background' ORDER BY meta_id LIMIT 1", $id ) ); } $has = ( '' !== $val && '0' !== $val ); return $has; } /** * Tag so the CSS below can branch on image / no-image. */ function bw_footer_body_class( $classes ) { $classes[] = bw_footer_has_image() ? 'bw-footer-img' : 'bw-footer-noimg'; return $classes; } add_filter( 'body_class', 'bw_footer_body_class' ); /** * Emit the footer polish CSS. Uses !important because it overrides Kadence's * own generated inline rules (which are non-!important, so this always wins * regardless of source order). */ function bw_footer_polish_css() { $row = BW_FOOTER_ROW; echo ''; } add_action( 'wp_head', 'bw_footer_polish_css', 20 );