Re: [cgiapp] CAP Application Design suggestion

[Giannis Economou <suppressed>]

Michael Peters wrote:
> Giannis Economou wrote:
>   
> > MyBaseApp    is-a         CGI:App
> > MyApp            is-a         MyBaseApp
> >     
>
> You don't need an intermediar MyApp. Just have MyBaseApp and have Cars
> and Airplanes inherity from that.
>
>   
It's better for me with the intermediate MyApp. Having those 2 steps in 
extending CAP (one in MyBaseApp and one in MyApp) suits me better for 
future reusability (for example, only basic configuration and 
initialization but no runmodes definitions at all in MyBaseApp and "must 
of the times to be there" runmodes in MyApp).
> > Cars                is-a          MyApp
> > Airplanes         is-a          MyApp
> >
> > Both Cars and Airplanes implement a runmode named: 'registration'
> >
> > I want to be able to call the right 'registration' runmode, according to
> > one query param (for example, 'type') that user requests. Example the
> > "http://www.example.com/app.pl?rm=registration&type=car"; to be handled
> > by the Cars 'registration' runmode.
> >
> > I thought to do that in app.pl script (the instantiation script):
> > 1. Use plain CGI to check for the 'type' query parameter
> > 2. Do a simple dispatch like:
> >   my $app = undef;
> >   $app = Cars->new() if $type eq "car";
> >   $app = Planes->new() if $type eq "planes";
> >   $app->run();
> >
> > I'm wondering if they are better ways to do the above (maybe inside a
> > CAP, without using the plain CGI for checking the 'type' param).
> > Any suggestions or ideas (always for a persistent environment like
> > mod_perl) are welcome...
> >     
>
> Use CGI::Application::Dispatch (use the 2.0 version which is still
> labled 'development' but which I've been using in production just fine)
> so that your URLs can look something like (under normal CGI)
>
>   /app.pl/car/registration
>   /app.pl/airplane/registration
>
> This kind of mapping is so common in CGI::Application::Dispatch that you
> wouldn't even need your own custom dispatch table to deal with it.
>
>
>   
Exactly what I was looking for and even better, at least by your 
description. Will go to check it out immediately!
Thank you!

G.


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