Query Param status default is a string value, but an array is required

[austyfrosty]

The default value in the collection params that is a string. ​https://github.com/WordPress/wordpress-develop/blob/953e1c5f8313a89d4d3b99ab5996b4660045c976/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php#L2847

Really, we should make that ['publish'].

Original commit: ​https://github.com/WordPress/wordpress-develop/commit/ede099a7047a150a37d43a380e661b99387bce41

[ironprogrammer]

Thanks for the report, @austyfrosty!

Since r39104, the default for status was changed from string to array to support querying multiple post statuses. However, string was/is still supported for backward compatibility.

This suggested change, while making the status param default consistent with the newer expected type, would introduce a backwards compatibility issue. Parts of this controller have been ​copied as-is in userland code, and for example could impact how sanitize_post_statuses() ​assumes the default is a string.

I suggest wontfix on this, though perhaps the code could be documented to indicate this inconsistency.

Props @antonvlasenko and @azaozz for additional in-person discussion.

[ironprogrammer]

Closing this as wontfix for now, though additional discussion or a documentation update (if helpful) is welcome.