app/api/api.rb
class API < Grape::API
format :json
formatter :json, Grape::Formatter::ActiveModelSerializers
rescue_from Mongoid::Errors::DocumentNotFound do
error!({ message: "not found" }, 404)
end
before do
header("Access-Control-Expose-Headers", "total")
header("Access-Control-Allow-Origin", "*")
end
mount API::V1
end