STI type not updatable

Sorry about the previous formatting issues, here again:

Imagine you have the following scenario:

class Employer < ActiveRecord::Base
end

class Manager < Employer
end

employer = Employer.find(1)          # => #<Employer>
manager  = employer.becomes(Manager) # => #<Manager>
manager.save!                        # => #<Manager>
Employer.find(1)                     # => #<Employer>

The problem is in Persistence#update. It calls Base#unscoped which calls Base#relation where type_condition is automatically applied. The resulting SQL statement is therefore

UPDATE employers SET .... WHERE employers.id = 1 AND employers.type = 'Manager'`

and although #save! doesn't throw an error the record is not actually updated.

A test case is attached.

Here the links:

• Code
• Documentation

Applied.

Not sure, I think becomes is already doing most of the job pretty well, but it's certainly incomplete.

This may be stale, but it's still a problem. AFAICS, you can't update the type of an STI record.

If a user changes an ArticleReference to a BookReference, I use #becomes on it, but then the update call tries to update a BookReference with that ID, and there isn't one. I think it's incorrect behavior to use the type column to find a single record - just the id should be used, as was apparently done in Rails < 3.

My workaround is

Reference.connection.execute "UPDATE `references` SET type = '#{@reference.type}' 
  WHERE id = '#{@reference.id}'"
@reference.update_attributes params[:reference]

What's the status of this issue, it should be fixed?

Thanks.