It would be lovely if the rake command db:create could be followed by a postgresql installation script. This, for example. (It must be run as postgres user):
CREATE EXTENSION "fuzzystrmatch"; This because, in this moment, i'm doing it manually every time I create a database.
Any hints?
As of Rails 4, there is a enable_extension method:
class AddFuzzyStringMatching < ActiveRecord::Migration def change enable_extension "fuzzystrmatch" end end I just do this in a migration
class AddCryptoToDb < ActiveRecord::Migration def up execute <<-SQL CREATE extension IF NOT EXISTS pgcrypto; SQL end end You can execute any sql want there. I also do it for functions
class BuildFnSetWebUsersUid < ActiveRecord::Migration def up say "building fn_set_web_users_uid function" execute <<-SQL CREATE OR REPLACE FUNCTION fn_set_web_users_uid() RETURNS trigger AS $BODY$ BEGIN IF NEW.uid IS NULL THEN SELECT UID into NEW.uid FROM generate_series(10000, (SELECT last_value FROM web_users_uid_seq)) AS s(uid) EXCEPT SELECT uid FROM web_users ORDER BY uid; IF NEW.uid is NULL THEN SELECT nextval('web_users_uid_seq') INTO NEW.uid; END IF; END IF; RETURN NEW; END; $BODY$ LANGUAGE 'plpgsql'; SQL end def down execute "DROP FUNCTION IF EXISTS fn_set_web_users_uid;" end end Also it doesn't need to be postgres user, depending upon the extension it needs to be superuser or database owner. So on my dev boxes I give the user Super User Rights for ease of use.
You could create a rake task (it's fairly straightforward), or mess around with the template1 database (not recommended, but possible):
http://www.postgresql.org/docs/9.2/static/manage-ag-templatedbs.html
