[Catalyst] Request paths - rejoining Chained actions together.

[Matt S Trout]

On Fri, May 09, 2008 at 01:00:07PM +0100, Tomas Doran wrote:
> Hi
> 
> I'm building quite a complex app, which has a number of ways of  
> locating things, and I want to be able to rejoin chains..
> 
> Some example URLs:
> 
> /volume/*/track/*/format/*
> /track/*format/*
> 
> This becomes:
> 
> sub tracksequence : Chained('/') PathPart('track') CaptureArgs(1) {}
> 
> sub volume : Chained('/') PathPart('volume') CaptureArgs(1) {}
> sub trackonvolume : Chained('volume') CaptureArgs(1) {}

sub format :Chained PathPart('format') Args(1) {}

Inherit that into both controllers.

__PACKAGE__->config(actions => { format => { Chained => 'tracksequence' } });

in one controller, and 'trackonvolume' in the other.

Then you have two format endpoints but one 'sub format'.

Problem solved.

> But this doesn't work...
> 
> So what I've got instead is:
> 
> sub formattracksequence : Chained('tracksequence') PathPart('format')  
> Args(1) { $c->forward('format'); }
> sub formattrackonvolume: Chained('tracksequence', 'trackonvolume')  
> PathPart('format') Args(1) { $c->forward('format') }
> sub format : Private {}
> 
> Which works fine.. However, this is just a subset of my URL  
> complexity, and I have *multiple* points where I want to be able to  
> chain one function into two (or more) chains..
> 
> My actual URLs look like /volume/track/*/format/*bitrate/*/ 
> someoperation or track/*/format/*bitrate/*/someoperation
> 
> and having to maintain two seperate sets of chains is pretty painful..
> 
> Is there any sane way of doing this? Am I missing something obvious?
> 
> Cheers
> Tom
> 
> 
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