official_module/app/models/master_password.rb

class MasterPassword
	include Mongoid::Document
	include Mongoid::Timestamps
	include ActiveModel::SecurePassword
	
	field :password_digest, type: String 

	has_secure_password


	def changed_days_ago
		((Time.now - self.updated_at) / 86400).to_i
	end

end