Only generate pingback url header tag when relevant.

Rationale:
1. The principle of pingbacks is based on articles. Pingbacks are a special kind of comments and the article being 'pinged-back' has to be identifiable (which they're not on archive pages and the like).
2. WP only registers a ping if it can identify the article which is supposed to have been 'pung'. See: https://developer.wordpress.org/reference/classes/wp_xmlrpc_server/pingback_ping/
3. Pingbacks, like comments, can be disabled on a per article basis.

Therefore, having the pingback url auto-discovery header in place, only makes sense on singular pages where pings are open.
This commit is contained in:
jrfnl 2015-12-04 16:44:38 +01:00
parent e57d8c38b4
commit 9638b7e3c6
2 changed files with 10 additions and 1 deletions

View File

@ -15,7 +15,6 @@
<meta charset="<?php bloginfo( 'charset' ); ?>">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="profile" href="http://gmpg.org/xfn/11">
<link rel="pingback" href="<?php bloginfo( 'pingback_url' ); ?>">
<?php wp_head(); ?>
</head>

View File

@ -27,3 +27,13 @@ function _s_body_classes( $classes ) {
return $classes;
}
add_filter( 'body_class', '_s_body_classes' );
/**
* Add a pingback url auto-discovery header for singularly identifiable articles.
*/
function _s_pingback_header() {
if ( is_singular() && pings_open() ) {
echo '<link rel="pingback" href="', bloginfo( 'pingback_url' ), '">';
}
}
add_action( 'wp_head', '_s_pingback_header' );