Dynamic database names on git checkout.

database.yml

#
# requires 'gem install git'
#

<%
  current_branch = Git.open('.').current_branch
  unless current_branch =~ /(master|rebasing)/
    branch = "_#{current_branch}"
  end
%>

development:
  adapter: postgresql
  encoding: unicode
  database: workstiming_development<%= branch %>
  host: localhost
  pool: 5
  username: aisdata
  password: wRew2pheheGE

test:
  adapter: postgresql
  encoding: unicode
  database: aisdata_test<%= branch %>
  host: localhost
  pool: 5
  username: aisdata
  password: wRew2pheheGE

Used in conjunction with my db helper so I can easily create a new database for each branch I work on.