class JuventudePlugin::API < Grape::API resource :states do get do states = State.select([:id, :name]).order(:name) present states end get ':id' do state = State.select([:id, :name]).find(params[:id]) present state end get ':id/cities' do state = State.find(params[:id]) cities = City.where(:parent_id => state.id).select([:id, :name]).order(:name) present cities end get ':id/cities/:city_id' do city = City.select([:id, :name]).find(params[:city_id]) present city end end end