ID is excluded?

[matt17r]

I'm looking for a solution to be able to write a column named 'ID' (which isn't the primary key) in an external database.

I noticed in the README it says

Instance methods in ActiveRecord::Base, except for 'id', are combined into a list

Is there any reason why id is excluded? Is id= excluded too?

So far my best (only) solution is to monkey patch ActiveRecord::AttributeMethods::Write.write_attribute(attr_name, value) and then access it using square brackets:

external_object = ExternalObject.new(mapped_attributes_other_than_person_id)
external_object[:id] = person_id
external_object.save