trustieforge/app/api/mobile/apis/users.rb

module Mobile
  class Users < Grape::API
    resource :users do
      desc "get all users"
      get do
        ['hello']
      end

      desc "add a user"
      params do
        requires :login, type: String, desc: 'username'
        requires :mail, type: String, desc: 'mail'
        requires :password, type: String, desc: 'password'
      end
      post do
        us = UsersService.new
        begin
          user = us.register params.merge(:password_confirmation => params[:password],
                                          :should_confirmation_password => true)
          raise "register failed." if user.new_record?
          {status: 0, data: user}
        rescue => e
          {status: 1, message: e.message}
        end
      end
    end
  end
end