Archive for the ‘Technical’ Category

Switching from Edge Rails to 1.2 stable with Piston

Wednesday, January 24th, 2007

Update 1/25/07: Francois pointed out that now as of Piston 1.3.0 you can now do this all with the following command:

piston switch http://dev.rubyonrails.org/svn/rails/tags/rel_1-2-1 vendor/rails

For starters, if you’re still using svn:externals to manage your vendor/rails directory it’s time to switch to using Piston. svn:externals is so Q4!
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An interview with the authors of JRuby

Monday, January 22nd, 2007

The Java Posse hosted a great podcast interview with the authors of JRuby: Charles Nutter and Thomas Enebo. Additionally you get to hear what Tor Norbye is up to with his work on NetBeans Ruby integration and it looks like there’s some nice code assist features in the works! Really good code assist is the thing I miss most when doing Ruby (in RadRails) as opposed to Java (in IDEA).

It’s exciting to see the convergence of my two favorite languages coming along!

Keeping Ruby on Rails running at Dreamhost

Tuesday, January 9th, 2007

Update 1/12/07: This solution has reduced my 500 error rate down to less than 0.2% but it’s still not perfect. I continue to plug away at this…

Update 1/24/07: I’ve finally solved my Dreamhost 500 error problems with a different solution described in Keeping Rails running at Dreamhost part 2

This weekend I moved two of my newer Ruby on Rails based sites (http://windandtides.com and http://gearandboats.com) over to Dreamhost. You simply can’t beat their prices for hosting a small site (if you prepay for 2 years and use coupon code GABRITO to save $50 the total is $140.80) and I’ve found their customer service to be pretty responsive too.
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The Rails Way delivers the goods

Monday, December 18th, 2006

I had a piece of data import code in Wind and Tides that I just knew could be cleaner and more elegant. Last week I submitted it to Jamis and Michael who write the Rails Way blog and their refactoring of it exceeded my expectations and taught me a thing or two in the process. Their blog is definitely worth a read if you’re trying to take your rails coding to the next level!

Tab completion and history with irb and script/console

Wednesday, December 6th, 2006

One thing I love about Ruby (and really miss when working in Java) is its interactive command line interpreter irb (or script/console if you’re using Rails). I really wish irb had tab completion and saved history configured by default out of the box. The good news is it’s easy to configure by creating a $HOME/.irbrc file with the following contents:
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Hello Newshutch, goodbye Bloglines

Monday, December 4th, 2006

I’ve been a Bloglines user for a long time. However, after hearing about Newshutch on the Web 2.0 show podcast Episode 26 I’ve made the switch and couldn’t be happier. It sports just the right amount of Ajax, good keyboard shortcuts, and it’s built with Ruby on Rails. In short it’s by far the best web based RSS reader out there, check it out!

Comparing Amazon EC2 with VPS and dedicated hosting

Thursday, November 30th, 2006

I’ve been reading all the great things about Amazon EC2 (or Elastic Compute Cloud) and lots of pricing comparisons with VPS and dedicated hosting. I finally got an EC2 account and tinkered a bit and there’s a big difference between EC2 and Virtual Private Server or Dedicated hosting that most of the preliminary write-ups I’ve seen completely overlook.
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Ajax enabling crusty legacy webapps with Prototype

Sunday, November 26th, 2006

With all of the hype around Ajax it’s easy to think you might need an MVC framework with baked in Ajax support like Rails ActionPack or JBoss Seam to make Ajax easy. However, libraries like Prototype (which is what Rails uses) make it so easy that it’s a snap to Ajax enable even the crustiest legacy web application!

Let’s take a look at what it takes to put a simple unordered list on a page with a refresh button to refresh the list without doing and page reload and then we’ll spruce it up a bit:
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Javascript debugging in Internet Explorer

Tuesday, November 21st, 2006

It always drives me nuts when I get a Javascript error in Internet Explorer that I can’t reproduce in Firefox because I’m used to debugging Javascript in Firefox with Firebug. I finally had to buckle down and figure out how to debug Javascript in IE and fortunately the IE Blog has a nice post on how to do this. The solution I used:

1. Install the free Microsoft Script Debugger
2. In Internet Explorer:

Tools->Internet Options…->Advanced->Disable Script Debugging (Internet Explorer)
Tools->Internet Options…->Advanced->Disable Script Debugging (Other)

3. Hit a page with a Javascript error and it asks you Do you wish to Debug? and click Yes

It’ll bring up the debugger with a nice yellow line on the Javascript causing the error.

Instantiating and populating a list or collection

Monday, November 20th, 2006

In Java it always irks me when I have to create a collection and then populate it in separate steps as follows:

List states = new ArrayList();
state.add(State.CA);
state.add(State.WY);

Then today I read about using an anonymous subclass with instance initializer to initialize a collection which appeals to the block loving Rubyist in me:
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