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I am very new to ROR. (Ruby 1.8.7, rails 2.1.1, rack 0.8.7, mysql 5.1.41) I has my_app/lib/migration_helpers.rb file: module MigrationHelpers def self.foreign_key(from_table, from_column, to_table) constraint_name = "fk_#{from_table}_#{to_table}" execute %{alter table #{from_table} add constraint #{constraint_name} foreign key (#{from_column}) references #{to_table}(id) }.... end In my_app/db/migrate/001_create_airpor...

...nd a good answer for the "foreign key problem" which forces OVirt to stay on pg. I have found a plugin on this particular problem, named foreigner : http://github.com/matthuhiggins/foreigner It provides a rails' syntax to common operation on them. For instance : add_foreign_key(from_table, to_table, options) remove_foreign_key(from_table, options) foreign_keys(table_name) I really like to keep my development computer to run as fast as possible (ie without a database service), so I have even tried to integrate this plugin into OVirt, in a transparent way for existing db. Af...

Hello, I had an application on Rails 1.2 or 1.1 (don''t remember). Now I have updated it to 2.1. I had a migrations_helper.rb in the Libs directory which defined foreign_key and drop_foreign_key methods. But now migrate task doesn''t find them. Have I to include this directory somewhere with Rails 2.1? Doesn''t it work as always? Could I use another thing to declare