Changeset 9319 for sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/functions.php

Timestamp:

12/10/2019 11:40:41 PM (6 years ago)

Author:

coffee2code

Message:

Developer: Output <link rel="canonical"> tag taxonomies and post type archives.

Props jonoaldersonwp, coffee2code.
Fixes #4712.

File:

• sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/functions.php (modified) (1 diff)

sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/functions.php

@@ -449 +449 @@
 }
 add_action( 'wp_head', __NAMESPACE__ . '\add_meta_description_for_summary' );
+
+/**
+ * Outputs `<link rel="canonical">` tags where appropriate.
+ */
+function rel_canonical() {
+    $canonical = false;
+    $queried_object = get_queried_object();
+
+    if ( is_tax() || is_tag() || is_category() ) {
+        $canonical = get_term_link( $queried_object );
+    } elseif ( is_post_type_archive() ) {
+        $canonical = get_post_type_archive_link( $queried_object->name ); 
+    }
+
+    if ( $canonical && get_query_var( 'paged' ) > 1 ) {
+        $canonical .= 'page/' . (int) get_query_var( 'paged' ) . '/';
+    }
+
+    if ( $canonical ) {
+        printf( '<link rel="canonical" href="%s">' . "\n", esc_url( $canonical ) );
+    }
+}
+add_action( 'wp_head', __NAMESPACE__ . '\rel_canonical', 9 );
+