In my WordPress v5.6, I am using the below code in Author page to show all current author’s posts from a custom
<?php $author_page_link = esc_url(get_author_posts_url(false, ID->user_nicename)); ?> <a href="' . $author_page_link . '?post_type=song">All Songs</a>
The above link will filter all the songs from current author with a URL below:
I want to show both “song” and “poem” custom posts from a author in the filter page. I have tried below a links, with no luck:
<a href="' . $author_page_link . '?post_type=song+poem">All</a> <a href="' . $author_page_link . '?post_type=song&post_type=poem">All</a>
How can I have a link to filter posts from multiple custom posts?