Brancher is a rubygem to switch databases connected with ActiveRecord by Git branch.

For example, if the name of a database is sample_app_dev, Brancher will switch the database to sample_app_dev_master at master branch, and sample_app_dev_some_feature at some_feature branch.

Add this line to your application's Gemfile:

group :development do
  gem "brancher"
end

And then execute:

$ bundle

# config/environments/development.rb

Brancher.configure do |c|
  # if branch is "master" or "develop", database name has no suffix.
  c.except_branches << "master"
  c.except_branches << "develop"

  # if auto_copy is true and database does not exist,
  # copy database from no suffix name database to suffixed name one.
  c.auto_copy = true
end

1. Fork it ( https://github.com/[my-github-username]/brancher/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

naoty