attr_encrypted | Generates attr_accessors that encrypt and decrypt attributes | Encryption library

Curiously, updating my attr_encryptor on my model to

there're 2 method encrypt in the gem attr_encrypted, one is class method and one is instance method, the instance method will automatically generate random iv, meanwhile the class method will not, it uses the iv you setup.

when you call User.last.q2_email_address = "bob@bob.com", this method will call the class method encrypt, the instance method will not be called, so that if you don't setup iv, the error must specify an iv (ArgumentError) will be raised.

there's 2 ways to fix, the first one is setup the iv

Looks like you're running into compatibility issues trying to use the latest version of the activerecord-import gem at the time of writing (released in October 2020) with activerecord 3.2.22.5 (released in September 2016). You do mention it's a rails 3.2.15 app but you're not using activerecord 3.2.15 which is confusing.

Try using activerecord-import 0.4.1 (released in July 2013) and activerecord 3.2.15 which should be compatible with rails 3.2.15.