Support a "source" attribute in post types, taxonomies, and post statuses

[johnjamesjacoby]

When registering custom post types, taxonomies, or post statuses, it would be nice to have a way to tell the system what plugin was responsible for those registrations.

Use Case:

In bbPress, there are 3 post types, 1 taxonomy, and 4 post statuses. There are several places where an "any bbPress post type" or "any bbPress post status" comparison is necessary, but it's somewhat annoying and repetitive to need to write:

array( bbp_get_forum_post_type(), bbp_get_topic_post_type(), bbp_get_reply_post_type() )

I'd prefer to write:

get_post_types( array( 'source' => 'bbpress' ) )

Tangentially, this could replace the otherwise vague internal property, with:

'source' => 'wordpress'

I'm not confident that source is the best descriptor, or if domain or namespace or something else might be more appropriate (without being too vague to be useful.)

[SergeyBiryukov]

WP_Post_Type::set_props() already sets any custom properties you pass to register_post_type(), so this appears to be possible without any special support from WordPress core.

Just tested by adding 'source' => 'bbpress' to the post types in bbPress::register_post_types() and checking get_post_types( array( 'source' => 'bbpress' ) ).

[johnjamesjacoby]

Replying to SergeyBiryukov:

WP_Post_Type::set_props() already sets any custom properties you pass to register_post_type(), so this appears to be possible without any special support from WordPress core.

Just tested by adding 'source' => 'bbpress' to the post types in bbPress::register_post_types() and checking get_post_types( array( 'source' => 'bbpress' ) ).

Yep! It will work, but... I think it's an idea worth officially endorsing and promoting as a best practice.

(I added it to bbPress as I was creating this ticket: ​https://bbpress.trac.wordpress.org/changeset/6672)

[SirLouen]

Replying to johnjamesjacoby:

Yep! It will work, but... I think it's an idea worth officially endorsing and promoting as a best practice.

How do you think it would be the best way to endorse this?

[SirLouen]

It appears that this is not relevant anymore since after a couple of months no answer has been given, so maybe it's time to close this as maybelater.

@johnjamesjacoby if you think you can provide some additional information so we can look into it further, feel free to comment, and I will be happy to come by and proceed with this.