fizzy/config/database.yml

<%
  config_path = if Fizzy.saas?
    gem_path = Gem::Specification.find_by_name("fizzy-saas").gem_dir
    File.join(gem_path, "config", "database.yml")
  else
    File.join("config", "database.#{Fizzy.db_adapter}.yml")
  end
%>
<%= ERB.new(File.read(config_path)).result %>