…in the list of values that are used to create the hash. This ensures that even nearly identical Activerecord models will have unique hashes in all circumstances.
…n your models. This is especially helpful when adding acts_as_hashed to an existing model. Log into the console, YourModelName.rehash! and each instance will have it's hash updated. Note the exclaimation point! If the properties that you use with acts_as_hashed have changed since the hash was originally computed, this will _change_ that hash value. Keep that in mind if you use the crypto_hash values in URLs that would now be defunct.
…o not upset Rails