app/models/user_messages.rb
class UserMessage
include DataMapper::Resource
property :id, Serial
property :content, Text
property :sender_id, Serial
belongs_to :user
validates_length_of :content, max: 128
validates_presence_of :sender_id
end
# let(:albert) { User.create(email: "asdasd@test.com",
# rfid_code: 'gfasdfsd',
# github_user: 'kikrahau',
# password: "oranges",
# password_confirmation: "oranges")}