Share custom taxonomy between two custom post types

Question

I have a wordpress page with this custom post types:

Movies has a custom taxonomy (genres) with movie´s genres and Blurays has a custom metabox "Belongs to movie" with movie Id.

In the blurays custom post type archive page I want to show all the genres and count blurays by them.

But this is because both custom post types have genre custom taxonomy and I want one of this posibilities:

Only movies has it and using metabox "Belongs to movie" show all the bluray filtered by movies genres.
Share custom taxonomy without repeat it in both custom post types.

I tried creating a custom taxonomy "genrebr" but if a genrebr doesnt exists it generates a 404.

Is possible that I try?

ad_on_is ad_on_is · Accepted Answer · 2017-05-07T22:08:14

If I understood you right, you want:

you can fetch the movies (and get their post_id) and then use wp_get_post_terms() to fetch the custom_taxonomy

wp_get_post_terms($movie_post_id, 'custom_taxonomy', array("fields" => "ids"));