Relative URLs for a particular custom post type?

Question

Is it possible to make URLs relative for just a singular custom post type? I used these 2 lines in make just my custom post types to use relative URLs.

add_filter( 'post_type_link', 'wp_make_link_relative' );  // Custom post type link
add_filter( 'post_type_archive_link', 'wp_make_link_relative' ); // Post type archive link

This worked great, until I realized I had a trickle down problem of my events no longer resolving properly if they were shown on a sub-domain. My site has a few different mapped sub-domains, so I'm now looking to narrow my add_filter to just the custom post type I need instead of all of them.

Answer 1

At @milo's suggestion, I used the post_type_link example and adapted it to my needs. This made it so only my chosen post type would be relative, while leaving any other custom post types functioning as usual.

function make_yourposttype_relative ( $url, $post ) {
    if ( 'yourposttype' == get_post_type( $post ) ) {
        add_filter( 'post_type_link', 'wp_make_link_relative' );  // Custom post type link
        add_filter( 'post_type_archive_link', 'wp_make_link_relative' ); // Post type archive link
    }
    return $url;
}
add_filter( 'post_type_link', 'make_yourposttype_relative', 10, 2 );