id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
19572	switch_to_post() stack implementation (similar to switch_to_blog())	alexkingorg		"One of the challenges themes and plugins have is the balance between utilizing the core APIs that rely on global variables, while leaving things in a ""clean"" state for the next worker in the chain.

For example, I might have a shortcode that pulls content from another post, outputs a title or some other data, then needs to restore the previous post environment. The attached patch provides APIs for doing just this - using the same stack approach that switch_to_blog() takes in a multi-site instance.

To set up a post context, call: switch_to_post($post_id);

This can be called multiple times, diving deeper into the stack. Then each process is responsible for restoring the $post context by calling: restore_post();

This goes back to the stack, bumps out the current post and restores the previous post's context.

There is some test code for demonstration here:

https://gist.github.com/1309915"	enhancement	new	normal	Awaiting Review	General	3.3	normal		has-patch	nacin matt@…