@@ -48,6 +48,37 @@ You might have some database tables that are read-only. For example, there might With that in place, you cannot modify the properties of any +Location+ instances, even new ones not yet saved to the database. You cannot save, create, update or destroy (or +delete_all+) any records from the table. +=== Associations + +You needn't worry that locking records or tables means they cannot be associated with anything. Using our geographic data example, we could have: + + # This table is for reference only + class Town < ActiveRecord::Base + table_locked + has_many :users + end + + class User < ActiveRecord::Base + attr_locked :username + belongs_to :town + end + +With this setup, we can still modify associations as usual: + + town = Town.find(:first) + user = User.find(:first) + + # Saves immediately + town.users = [user] + + # As does this + town.users << user + + # This works too + user.town = town + user.save + + === License Copyright (c) 2007 James Coglan README 148d9af20ed051a9b8f4c563aef6f029ab1a0207 James Coglan jcoglan@googlemail.com http://github.com/jcoglan/attr_locked/commit/af8a31281503d34b8b029fd56c77aed291abc8a3 af8a31281503d34b8b029fd56c77aed291abc8a3 2007-06-12T08:33:39-07:00 2007-06-12T08:33:39-07:00 Updated readme to explain associations. Manual testing indicates that associations can be made with locked records. 9e40984ca14a0a2978b827c7806929ac9e66a288 James Coglan jcoglan@googlemail.com