search for: irreversiblemigrations

Hi, To make a migration irreversable, one has to execute "raise IrreversibleMigration". This is how it''s documented everywhere. However, when I do that, I get this: rake aborted! uninitialized constant IrreversibleMigration This is the migration (the file is called 022_ldap_fix.rb): class LdapFix < ActiveRecord::Migration def self.up execute File.open(

Hi! It seems that migration doesn''t use single transcation to execute the needed migrations for the database upgrade, so if I have database at version 5, and I wrote some migrations 6..10, and error occurs while executing migration 7, the database stays in state 6? I also think that migration taks could use some more verbosity, for example if migration fails, there''s no

I''ve spent the last several months learning RoR and building my first app. I''ve not used migrations yet and honestly don''t understand them much, and have not had my app under version control. I''ve decided it''s time (I know, some will say way past time ;-) ) to put the app under version control. I''ll be using Subversion and have begun working

Hi, is the following migration really supposed to be irreversible? class AddColumnsToUsers < ActiveRecord::Migration def change change_table :users do |t| t.integer :foo t.integer :bar end end end I''m using Rails 3.1 RC6 and when trying to redo this migration I''m getting ActiveRecord::IrreversibleMigration error. Cheers, Szymon -- You received

I''m having a bit of trouble getting a rails project to build properly within cruisecontrolrb. My cruise task is in lib/tasks/my_project.rake, and looks like this: task :cruise => [''db:test:purge'', ''db:migrate'', ''db:test:prepare'', ''test:coverage:clean'', ''test:coverage:prepare'',