Author archive only for custom post type

Question

I want to create an author archive for only custom post type. This page will includes only custom posts by the author.

And url structure should be example.com/portfolio/author/author-name/

I don't want to include custom type to default author.php because my custom post type is in different language.

Answer 1

According to this blogpost you just need to add the following code to your themes functions.php or in a plugin:

/* Add CPTs to author archives */
function custom_post_author_archive($query) {
    if ($query->is_author)
        $query->set( 'post_type', array('custom_type', 'post') );
    remove_action( 'pre_get_posts', 'custom_post_author_archive' );
}
add_action('pre_get_posts', 'custom_post_author_archive');