Wishlist: Filters/hooks (path, stage) => code( req, \%returned_data)

[dallaylaen]

For reference: http://www.sinatrarb.com/intro.html#Filters

Make a way to add hooks: (path, method, stage) => CODE( $request, %return_value_if_applicable).
If URI foo/bar/baz was called, applied are hooks for /foo, then /foo/bar, then /foo/bar/baz (if any).

TODO

• What are the appropriate stages?
• Adding another hook for the same location = replace? enqueue? die?
• on_stage_name( path => CODE ) or add_hook( stage => ..., path => ..., code => ...)?

Dev notes

• see where server_stat is inserted - probably a good place for hooks. BTW replacing server_stat with hooks seems ok and then multiple hooks must be enqueued.
• add Request->on_cleanup to be executed in DESTROY after postpone() queue is processed (postponed queue may grow!)
• applicable hooks should be cached in location's profile, calculated on first call (or else unnecessary work with CGI)

[akzhan]

Any added hook should be OK enqueued. No more manipulation, because author of routes have full control over 'em.

[dallaylaen]

Implemented in 0.14. Multiple hooks are possible.

P.S. Thanks for discussion in PM, Akzhan!