10 Cool Things in Rails 2.3
This was presented to the Ruby Users of Minnesota on March 30, 2009.
Here’s a quick look at 10 new Rails features that I think are cool. Not all of them are huge new features, but instead help solve annoying problems. I’ve also crea......
Slow tests are a bug
I’ve been doing TDD for about three years now. Once I figured out how to do it right, it became a natural part of how I program, and I can’t really imagine doing development without it. This isn’t to say that TDD is...
Dealing with ‘duplicate key violates unique constraint’ on the primary key
I recently had to work through a problem where inserts were failing due to duplicate primary keys.
Here’s the error (edited for clarity):
PGError: ERROR: duplicate key violates unique constraint "contracts_pkey": INSERT INTO "contr...
Today’s hard-won lesson
An float subtracted from an integer results in a float. When typecast by ActiveRecord, this is converted to an integer.
validates_numericality_of with :only_integer => true results in a rather obscure error message if a non-integer i...
Fetcher moved to GitHub
A quick FYI for those who have been using the Fetcher plugin that we wrote (and use on FanChatter Events)...
I have moved the Fetcher plugin repository to GitHub. You can get it at git://github.com/look/fetcher.git
Happy forking!
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Rescuing autotest from a conflicting plugin
For the longest time, I wasn’t able to run autotest on one of my projects. That was OK; I was intrigued by autotest, but had never really committed to it. The problem: whenever I would try to run autotest, I’d get the following...
