From: Kirk Haines <khaines@...>
Date: 2004-08-20T05:12:46+09:00
Subject: Re: ANN: Iowa 0.9.1 Released

On Fri, 20 Aug 2004 00:31:28 +0900, Michael Neumann wrote

> > First, let's make sure I am answering the right question.  You want to 
> > receive requests at /comment/FOO, where FOO can be anything.  You want 
to 
> > then invoke some component with the value of FOO passed to it so that it 
can 
> > query the right set of comments to display, right?
> 
> Exactly!

Okay.  In general, what you want to do is to setup a Main.iwa that is 
something like this

class Main < Iowa::Component

  def setup
    comment_parameter = File.basename(session.context.request.request_uri)
    dispatch_page = page_named('YourComponent')
    dispatch_page.comment_parameter = comment_parameter
    dispatch_context = Iowa::Context.new(session.context.request, 
session.context.response)
    dispatch_context.sessionID = session.context.sessionID
    dispatch_context.requestID = session.requestCount
    dispatch_page.handleResponse(dispatch_context)
    session.currentPage = dispatch_page.dup
  end
end


What this does is takes the request and pulls the last part off of the 
path.  It then creates an instance of the component that you actually want 
to have handle the current request, and passes that last bit of the path 
into a variable in that component.  Then is passes the execution along.

This is actually a common enough activity in my code that I really should 
provide a simple method for taking care of all of the exposed mechanics 
above.  I'll make that a part of the next release.

Give me a shout if I can help out further.

Thanks,

Kirk Haines