From bd647674ba5259d15d675a0246ce3b037b2e3be2 Mon Sep 17 00:00:00 2001
From: Alex Kirk <akirk@users.noreply.github.com>
Date: Fri, 20 Dec 2024 08:48:21 +0100
Subject: [PATCH] Enable a /friends/tag/ page to see the friend posts tagged

---
 includes/class-friends.php  | 29 +++++++++++++++++++++++++++++
 includes/class-frontend.php |  5 +++++
 2 files changed, 34 insertions(+)

diff --git a/includes/class-friends.php b/includes/class-friends.php
index d1babbdc..7486ae0a 100644
--- a/includes/class-friends.php
+++ b/includes/class-friends.php
@@ -1175,6 +1175,35 @@ function ( $post_format ) {
 		return $tax_query;
 	}
 
+	public function wp_query_get_post_tag_tax_query( $tax_query, $filter_by_post_tag ) {
+		if ( empty( $filter_by_post_tag ) ) {
+			return $tax_query;
+		}
+
+		if ( ! is_array( $filter_by_post_tag ) ) {
+			$filter_by_post_tag = array( $filter_by_post_tag );
+		}
+
+		if ( ! empty( $tax_query ) ) {
+			$tax_query['relation'] = 'AND';
+		}
+		$post_tag_query = array(
+			'taxonomy' => 'post_tag',
+			'field'    => 'slug',
+			'operator' => 'IN',
+			'terms'    => $filter_by_post_tag,
+		);
+
+		if ( ! empty( $tax_query ) ) {
+			$tax_query[] = $post_tag_query;
+		} else {
+			$tax_query = array( $post_tag_query );
+		}
+
+		return $tax_query;
+	}
+
+
 	/**
 	 * Plural texts for post formats.
 	 *
diff --git a/includes/class-frontend.php b/includes/class-frontend.php
index 2ea17458..17fc2be8 100644
--- a/includes/class-frontend.php
+++ b/includes/class-frontend.php
@@ -1409,6 +1409,11 @@ public function friend_posts_query( $query ) {
 					}
 					break;
 
+				case 'tag':
+					$post_tag = array_shift( $pagename_parts );
+					$tax_query = $this->friends->wp_query_get_post_tag_tax_query( $tax_query, $post_tag );
+					break;
+
 				default: // Maybe an author.
 					$author = User::get_by_username( $current_part );
 					if ( false === $author || is_wp_error( $author ) ) {