This semester I’m going to have my Ruby and PHP classes build a form driven, AJAX-y web application as the final project. This is a bread-and-butter assignment that performs the basic task of storing form data in a database then displaying it. We’ll deal with the ever present Persistence Problem by using a SQLite3 database to store user input, and the AJAX/Javascript layer will be all JQuery.
I’ve created the PHP proof of concept site at http://www.istoasisto.com, and it looks like this:
A classroom project of this size can be completed in four to six weeks, depending on the programming and web skills a student brings to the class. More is always better.
The PHP course will be starting from scratch (no cakePHP, no Drupal, no Joomla), while my Ruby course will be using Rails. I’ll be doing the project in Seaside. When all is said and done, we will count the lines of PHP, Ruby, and Smalltalk to see who get bragging rights for writing the fewest lines of code.
If you want to work along wtih us, your project should have these features:
- An HTML form.
- JQuery form manipulation.
- AJAX via JQuery.
- Validated form input.
- Form data stored in a SQLite database.
- A Recaptcha form.
- User data safely displayed (potentially harmful characters sanitized).
There are dozens of features we could hang on this skeleton: pagination, search, social features (Twitter, Facebook, Buzz, etc), as well as polls, voting, thumbs-up/down, email, XML export, RSS feeds, Section 508 compliance, and more. I’ll be satisfied if most of my students can achieve basic functionality before semester burnout sets in.
And about that Seaside course—there isn’t one yet. But it is on my TODO list for future courses at CCSF. For the time being, as part of my own Smalltalk education, I’ll take this opportunity to complete the class project using Seaside. Since Smalltalk and Seaside are new to me, I’ll be starting on the same page as my PHP and Ruby students. This will be fun. I’ll be doing this project with Cincom Visualworks Non-Commercial which is free for non-commercial use on Windows, Linux, and Mac OS X.
OK. I’d better get to work on the Ruby part of this project before the Rails team unleashes another new product release just to confuse me.
Happy hacking…
Today I felt a compulsion to install Smalltalk on my little 256MB Slicehost slice. It was an itch I just had to scratch.
My first step was to admit (to myself) that I don’t know the first thing about deploying any kind Smalltalk anywhere. I can deploy PHP and Rails in my sleep, but I’m clueless about Smalltalk. I would have to do some research.
My first resource was James Robertson’s blog. He’s the Smalltalk evangelist for Cincom Smalltalk and has created countless Smalltalk tutorials and screencasts over the years. I’ve been following his experiences installing VisualWorks Smalltalk on his Slicehost server and noted that he mentioned having a problem running his 32-bit VM on a 64-bit server. He solved that problem by installing the ia32-libs. I anticipated that I would run into the same problem since I am running a 64-bit version of Ubuntu.
My second resource was the Linode.com support library. My original plan was to install both VisualWorks and Squeak, but as time slipped away, I realized that I had dreamed too grandly. I don’t know much about Squeak, but I know nothing about VisualWorks. I realized it would be less painful to go with Squeak. I googled “deploy pharo” and found a nice Seaside deployment guide on the Linode site. I took that path of least resistance and decided to install Pharo and Pier (a CMS written in Smalltalk).
I cut and pasted the Linode commands into the terminal and in 5 minutes I was ready to go. But, when I issued the command to start Seaside, I got the message: “Could not find squeak”. I recalled James Robertson’s gotcha and installed the 32-bit Intel libraries. I’m running Ubuntu, so I used this command:
sudo aptitude install ia32-libs
I won’t post the Linode article here; you can check it out for yourself if you’re interested. I just cut and pasted away as directed. Seaside started up on port 8080 perfectly. I poked around a little, took a few screenshots, then shut it down. It’s completely unsecured, and since I don’t know how to make it safe yet, I don’t want to leave it running unprotected. Right now I’m happy with taking baby steps.
By the way, here’s the command I used to run a squeak without a gui (headless). I’m saving it here for future reference; I had to do considerable digging to find it.
/opt/pharo-vm-15-2/squeak -vm-display-null /srv/www/pier-app-1.2/Contents/Resources/pier.image
My next step is to configure Apache to proxy Seaside. Once I get the proxy working, and learn more about securing the site, I’ll leave Seaside running. By the way, I have proof of life. Cool.
When I saw this page I rewarded myself with a cup of hot chocolate.
Keep hacking…
