[Catalyst] does detach cancel forward

Andrew Rodland andrew at cleverdomain.org
Sat Nov 7 09:07:16 GMT 2009

On Wednesday 04 November 2009 04:19:42 pm Ovid wrote:
> Think of detach as "game over", if that helps (probably doesn't).  From the
>  docs, detach(....) is described as:
>     The same as forward, but doesn't return to the previous action when
>  processing is finished.
> I think that description might be a bit confusing for some, as your
>  question suggests.

Yeah, there are at least two big shortcomings.

1. I think that we should stop trying to over-simplify things here, or at 
least stop *only* providing a simplified version and tell the truth: detach 
forwards, and then it throws an exception. That exception propagates up until 
the whole stack of running actions is unwound, and then Catalyst catches it 
and continues processing as usual, calling any 'end' action and then doing 

2. There's a "Flow Control" section in Catalyst::Manual::Intro that paints a 
better picture than perldoc Catalyst, but someone going directly to the docs 
for forward, detach, etc. can easily miss the pointers to 
Catalyst::Manual::Intro. The whole Manual::Intro business is a mess that 
nobody wants to touch. I don't know what to do with it either. :)


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