Pervasive Code

Nokogiri on a standard installation of Leopard is complain-y about a couple of old libraries:

“HI. You’re using libxml2 version 2.6.16 which is over 4 years old and has plenty of bugs. We suggest that for maximum HTML/XML parsing pleasure, you upgrade your version of libxml2 and re-install nokogiri. If you like using libxml2 version 2.6.16, but don’t like this warning, please define the constant I_KNOW_I_AM_USING_AN_OLD_AND_BUGGY_VERSION_OF_LIBXML2 before requring nokogiri.”

Aaron Kalin figured out how to fix this if you’re installing nokogiri as a system gem, but I want to use Bundler and keep my system gems down to the bare minimum. I figured out how to do this under Bundler 0.8.5.
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From the README:

AvantiConveniences is a set of convenience code for Ruby on Rails applications.

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The new features in Ruby on Rails 2.2.2 have been well documented, and I’m looking forward to using several of them on WhatYouAte.com. If you’re reading this you probably are too.

However, if you’re upgrading an existing project and you’re sticking with official releases (as opposed to edge Rails) like I am, your code probably needs some tweaking to work with Rails 2.2.2. Mine certainly did. Although there were a lot of failed tests with ugly stacktraces, there were only a few API changes in Rails that needed to be accomodated to fix them all. Here’s a list of the changes that broke my app, and what I had to do to get it working again.
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I recently upgraded WhatYouAte.com to Rails 2.2.2. I had been using advice from the Rails Wiki’s HowToUseValidationsWithoutExtendingActiveRecord page. I was using a class based on the RailsWeenie code (that site is down now) and it stopped working. Here’s a new replacement hack that works almost identically.
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