Using CGI and Perl to put a simple application online. Sometimes still the best way.
These days, it's fashionable to embed Perl, PHP, Python or Rails within a web framework if you want to put your application code online - in other words, if you want to take logic that's tried and tested and make it web available. And there's much to be said for this fashion - it provides a whole series of facilities and security checks which you don't have to keep re-coding yourself. If you're writing substantial systems, I'll encourage you to use such a framework, and indeed I'll introduce to you Django
as an extra day on the end of your Python or Ruby course.
... if you just want to add a simple, one-page script onto your web site, there's still a lot to be said for KISS - "Keep It Simple, Stupid" - and that can be achieved through the Perl and the Common Gateway Interface.
On last week's Perl course
, I wrote a complete CGI example that looks up data from within a large data file - a simple, single page filtering application. It's robust, secure, easy to use and it doesn't use any of the complicated day-to-even-start frameworks. Source code [here]
; data file [here]
. (written 2012-09-30, updated 2012-10-13)
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articlesP221 - Perl on the Web 
Perl and the Common Gateway Interface - out of fashion but still very useful? - (2009-12-26) 
From Web to Web 2 - (2007-05-21) 
Answering ALL the delegate's Perl questions - (2006-12-09) 
Presentation, Business and Persistence layers in Perl and PHP - (2006-04-17) 
An unhelpful error message from Apache httpd - (2006-03-30) 
Simple but rugged form handling demo - (2006-03-10) 
Danny and Donna are getting married - (2006-02-03) 
Running a Perl script within a PHP page - (2005-11-12) 
FTP - how to make the right transfers - (2005-09-01)
Some other Articles
Mixed mode travel - Information systems From Structured to Object Oriented Programming.Public Transport Services - from and to MelkshamOctober to December 2012 - Public CoursesUsing CGI and Perl to put a simple application online. Sometimes still the best way.Using Perl to read an RSS feed off a web site and extract data - via LWP and XML modulesHenbury loop, Bristol - a freight railway line with passenger potential?Trains across Wiltshire - an update on the TransWiltsOn getting noticed for the right reasons when you ask about job availabilityWriting more maintainable Perl - naming fields from your data records
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