Use WP Discourse to publish posts from Wordpress to Discourse

[angus (Angus McLeod)]

You made a reasonable assumption about how to achieve your goal, but wp_discourse_publish_categories won’t work reliably if you’re filtering to only one category with gutenberg editor.

You should use wpdc_publish_post_category instead:

Automatically Select Topic Category Based on Post Category?

You can do this with the wpdc_publish_post_category filter. It’d be something like (untested example code, but may work out of the box): function wpdc_change_post_category( $category, $post_id ) { $wp_category_name = get_the_category( $post_id )[0]->name $discourse_categories = WPDiscourse\Utilities\Utilities::get_discourse_categories(); $discourse_category = array_search( $wp_category_name, array_column( $discourse_categories, 'name' )); return $discourse_category['id']; } add_filter( …

I’ll update the OP to note that.