From: Florian Weber <csshsh@...>
Date: 2004-07-26T17:26:26+09:00
Subject: Re: aop presentational items in Rails?


hi!

not sure if i understand you correct, but maybe you
search for something like html decoration stuff? check out
the 'layout' method for the actionpack controllers...

http://ap.rubyonrails.org/classes/ActionController/Layout/ 
ClassMethods.html


ciao!
florian


On Jul 26, 2004, at 10:20 Uhr, leon breedt wrote:

> hi,
>
> i was just wondering, does Rails offer, or plan to offer,
> HTML::Mason-like AOP for templates?
>
> the Masonic notion does not map directly to the Rails way of doing
> things, i suspect,
> i think the closest thing Rails has to a component in Mason
> terminology is the template, and i'll use template below when i mean
> "component" in HTML::Mason terms.
>
> with HTML::Mason, you can define a "autohandler" for any particular
> path. what this means is that the autohandler is a parent (for the
> purposes of presentational output) for any template contained at or
> below that path.
>
> it has complete control of the output and can decide where the output
> of any contained templates should go. you can obviously override it
> selectively for components that you don't want this behaviour to apply
> to.
>
> the concept is very powerful though, as the wrapped component need
> know nothing about how its being wrapped. this is also vastly superior
> to include mechanisms, as it is completely DRYish :)
>
> Mason examples:
>
>    /autohandler           - gets invoked for all paths
>    /admin/autohandler - gets invoked for everything below /admin
>
> there is of course also the Mason concept of "dhandler", or "default
> handler", when nonexistent paths are attempted to be accessed, but
> thats a whole different discussion.
>
> the autohandler feature is something i would not be able to live
> without though, as it has meant a vast reduction in LOC for my web
> apps.
>
> comments?
>
> leon
>
>
>