Address model in the spree gem is used to track address information, mainly for orders. Address information can also be tied to the Spree::User objects which come from the Spree Auth Devise extension.firstname: The first name for the person at this address.lastname: The last name for the person at this address.address1: The address's first line.address2: The address's second line.city: The city where the address is.zipcode: The postal code.phone: The phone number.state_name: The name for the state.alternative_phone: The alternative phone number.company: A company name.Spree::Country object. It can optionally link to a Spree::State object, but only in the cases where the related country has no states listed. In that case, the state information is still required, and is kept within the state_name field on the address record. An easy way to get the state information for the address is to call state_text on that object.Spree::User can have multiple addresses and can manage them on the Checkout and Account page. Previously this feature was part of the Spree Address Book extension. Each Spree::Address object has a user_id column which links to the User.Spree::User there is ship_address_id and bill_address_id columns which indicates which addresses are the default ones for this User.