https://www.malcolmhardie.com/weblogs/angus/tags/ruby/ Recent content in Ruby on Angus Thinks Hugo en @2026 Angus Hardie Fri, 26 Feb 2010 00:00:00 +0000 https://www.malcolmhardie.com/weblogs/angus/posts/2010/02/26/rails-migrations-and-schemas/ Fri, 26 Feb 2010 00:00:00 +0000 https://www.malcolmhardie.com/weblogs/angus/posts/2010/02/26/rails-migrations-and-schemas/ <ul> <li> <p>A schema.rb file is typically a ruby script containing a call to the ActiveRecord::Schema.define method.</p> </li> <li> <p>A rails migration is a ruby class which inherits from ActiveRecord::Migration and contains a method called up</p> </li> </ul> <p>The useful fact that I realized only after doing some ultimately unnecessary work today is that because the schema file contains a method call, it&rsquo;s actually easier to extract the information from it than with a migration (which needs SQLEditor to figure out a class name and then call the up method)</p>