Short MongoDB Fields with Mongoid

Need to have shorter field name in MongoDB, but still use readable names in code?

# Mongoid Timestamps include Mongoid::Timestamps::Short

# fields field :aid, as: :application_id, type:String

# one to one embeds_one :address, :store_as => :ad

# collections field :aid, as: :application_id belongs_to :application, foreign_key: :aid