Telling register_post_type to not support anything

[sc0ttkclark]

As the use of WP becomes more complex, post types are getting used in more interesting ways. This is evident by a use-case for passing an empty array to the 'supports' argument. Essentially, the Post Type becomes an object relatable to taxonomies and custom fields.

If an empty array() is sent (or any empty value), WordPress currently sets the defaults to 'title' and 'editor':

​http://core.trac.wordpress.org/browser/tags/3.4.1/wp-includes/post.php#L1020

I believe an alternate value should be able to passed such as false, where no defaults will get set. Currently, my work around is to pass an array, but place a faux value within it like '_placeholder'. This keeps the array from being empty and defaults set.

I'll have the patch ready by morning but feel free to provide any input positive/negative on this.

[sc0ttkclark]

My patch would basically contain a change to this line:

​http://core.trac.wordpress.org/browser/tags/3.4.1/wp-includes/post.php#L1023

} else {

to:

}
elseif ( false !== $args->supports ) {

[markoheijnen]

Had this once and inserted the string 'false' as a value what does work since it isn't existing.

Wouldn't it be better to have array('title', 'editor') in the defaults array. That will remove the if/else check.

[sc0ttkclark]

+1 on that Marko, I had over assumed based on existing code there was a reason not to accept an empty value. Hopefully there wasn't, your solution would be best IMO.

[sc0ttkclark]

Minor patch, changing to minor severity

[nacin]

I feel like the original purpose of a default was to use it only if no 'supports' arg was passed in at all. Setting array() should explicitly say "don't support anything."

That might break too much random code — so, false seems good for now.

[sc0ttkclark]

Patch for the supports argument to be false, so as to not add support for the defaults

[nacin]

​[UT1020]

[nacin]

In [21831]:

Allow supports => false to be passed to register_post_type() to disable the default title and editor.

An empty array may also disable all default features in the future.
Do not rely on this behavior: always specify title and editor if you want them.

props sc0ttkclark.
fixes #21586.