define :create_database_config, :passwords=>{} do

  databases = Hash.new

  params[:databases].each do |db_name|
    if node[:rails][params[:name]][:db].has_key?(db_name)
      values = node[:rails][params[:name]][:db][db_name].to_hash
      if params[:passwords].has_key?(db_name.to_s)
        values["password"] = params[:passwords].fetch(db_name.to_s)
      end
      name = values.has_key?(name) ? values[:name] : db_name
      databases.merge!({ name.to_s => values })
    end
  end

  if params.has_key? :aliases
    params[:aliases].each do |target,source|
      databases[target.to_s] = databases[source.to_s]
    end
  end

  file "#{params[:app_root]}/shared/config/database.yml" do
    owner params[:deploy_user]
    group params[:deploy_user]
    mode '400'
    content databases.to_yaml
  end
end