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@…