namespace :deploy do

  desc 'Runs rake db:migrate if migrations are set'
  task :migrate do
    on primary fetch(:migration_role) do
      within release_path do
        with rails_env: fetch(:rails_env) do
          execute :rake, "db:migrate"
        end
      end
    end
  end

  after 'deploy:updated', 'deploy:migrate'
end

namespace :load do
  task :defaults do
    set :migration_role, fetch(:migration_role, :db)
  end
end