Fixed: SEO link canonical for the profile page

includes/core/class-permalinks.php

@@ -39,9 +39,9 @@ if ( ! class_exists( 'um\core\Permalinks' ) ) {
 
 			//add_action( 'um_user_after_updating_profile', array( &$this, 'profile_url' ), 1 );
 
-			remove_action( 'wp_head', 'rel_canonical' );
-
-			add_action( 'wp_head',  array( &$this, 'um_rel_canonical_' ), 9 );
+			/* @deprecated since version 2.1.7 */
+			//remove_action( 'wp_head', 'rel_canonical' );
+			//add_action( 'wp_head',  array( &$this, 'um_rel_canonical_' ), 9 );
 		}
 
 
@@ -55,6 +55,8 @@ if ( ! class_exists( 'um\core\Permalinks' ) ) {
 
 		/**
 		 * SEO canonical href bugfix
+		 * @deprecated since version 2.1.7
+		 * @see function um_profile_remove_wpseo()
 		 */
 		function um_rel_canonical_() {
 			global $wp_the_query;

includes/core/um-actions-profile.php

@@ -608,9 +608,13 @@ if ( !function_exists( 'um_profile_remove_wpseo' ) ) {
 			/* Yoast SEO 14.1 */
 			remove_all_filters( 'wpseo_head' );
 
+			/* Restore title and canonical if broken */
 			if( ! has_action( 'wp_head', '_wp_render_title_tag' ) ){
 				add_action( 'wp_head', '_wp_render_title_tag', 18 );
 			}
+			if( ! has_action( 'wp_head', 'rel_canonical' ) ){
+				add_action( 'wp_head', 'rel_canonical', 18 );
+			}
 		}
 	}
 
@@ -619,7 +623,7 @@ add_action( 'get_header', 'um_profile_remove_wpseo', 8 );
 
 
 /**
- * Meta description
+ * The profile page SEO tags
  * 
  * @see https://ogp.me/ - The Open Graph protocol
  * @see https://developer.twitter.com/en/docs/tweets/optimize-with-cards/overview/summary - The Twitter Summary card
@@ -659,9 +663,8 @@ function um_profile_dynamic_meta_desc() {
 		?>
 		<!-- START - Ultimate Member profile SEO meta tags -->
 
-		<link rel="canonical" href="<?php echo esc_url( $url ); ?>"/>
 		<link rel="image_src" href="<?php echo esc_url( $image ); ?>"/>
-
+		
 		<meta name="description" content="<?php echo esc_attr( $description ); ?>"/>
 
 		<meta property="og:type" content="profile"/>

includes/core/um-filters-profile.php

@@ -65,6 +65,55 @@ function um_dynamic_user_profile_title( $title, $id = '' ) {
 add_filter( 'the_title', 'um_dynamic_user_profile_title', 100000, 2 );
 
 
+/**
+ * Fix SEO canonical for the profile page
+ *
+ * @param  string       $canonical_url The canonical URL.
+ * @param  WP_Post      $post          Optional. Post ID or object. Default is global `$post`.
+ * @return string|false                The canonical URL, or false if current URL is canonical.
+ */
+function um_get_canonical_url( $canonical_url, $post ){
+
+	if( UM()->config()->permalinks['user'] == $post->ID ) {
+
+		/**
+		 * UM hook
+		 *
+		 * @type filter
+		 * @title um_allow_canonical__filter
+		 * @description Allow canonical
+		 * @input_vars
+		 * [{"var":"$allow_canonical","type":"bool","desc":"Allow?"}]
+		 * @change_log
+		 * ["Since: 2.0"]
+		 * @usage
+		 * <?php add_filter( 'um_allow_canonical__filter', 'function_name', 10, 1 ); ?>
+		 * @example
+		 * <?php
+		 * add_filter( 'um_allow_canonical__filter', 'my_allow_canonical', 10, 1 );
+		 * function my_allow_canonical( $allow_canonical ) {
+		 *     // your code here
+		 *     return $allow_canonical;
+		 * }
+		 * ?>
+		 */
+		$enable_canonical = apply_filters( "um_allow_canonical__filter", true );
+
+		if( $enable_canonical ){
+			$url = um_user_profile_url( um_get_requested_user() );
+			$canonical_url = $url === home_url( $_SERVER['REQUEST_URI'] ) ? false : $url;
+
+			if ( $page = get_query_var('cpage') ){
+				$canonical_url = get_comments_pagenum_link( $page );
+			}
+		}
+	}
+
+	return $canonical_url;
+}
+add_filter( 'get_canonical_url', 'um_get_canonical_url', 20, 2 );
+
+
 /**
  * Add cover photo label of file size limit
  *