[Pdx-pm] Re: MVC Design Pattern [Was] Software development and The Rules

Joshua Keroes jkeroes at eli.net
Wed Sep 25 15:15:10 CDT 2002

> > If you really want to learn about this patten, I'd suggest searching
> > for "Model View Controller" on google, and reading some SmallTalk
> > introduction on the matter. Almost all of SmallTalk is MVC-oriented.
> Well, I used the MVC model in Java a lot in school, but applying it to perl 
> is the crux of the biscuit, as it were.  Especially in a cgi scenario, 
> where it's really tempting to put everything in one file.  Grr.

Take a look at CGI::Application, that's what we've been turning to lately.
It's not an MVC, it's a State Machine. The nice thing about using
CGI::Application is that you subclass it. Being able to turn your CGIs
into objects makes them... testable! Yay, testing. Oh, and you can also
plug it into Mason or mod_perl if you're interested in that sort of thing.

CGI::Application has hooks for HTML::Template, so you can make your
subclass a combination Controller/View and the template file the Model.
Given the plethora of HTML templating modules on CPAN, we can infer that
this is a fairly common solution to the CGI data-abstraction problem.

It really depends how complex you wish to make the project. I've found
that it's not necessary to separate the View from the Controller for smallish


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