Single Table Inheritance and :conditions

Single Table Inheritance question.

class Employee is the master model (table is employees) class Cog is the subclass model, and uses single table inheritance to be a subclass of Employee class Blurfl is a normal model (table is blurfls)

in cog.rb, I have something like:

def foo     Cog.find(:all, :include=>'blurfl', :condition=> ["cogs.status = 'Active'"] end

So we're joining active cogs and blurfls. Now, and this is the thang, assume that the blurlfs and cogs tables both have a status column.

The problem is that the conditional statement above won't work. There isn't a cogs table. And I have to qualify the column name since it exists in blurfls and employees.

Rails seems to have all the information it needs to do this translation.

I find it egregious that I'd have to refer to "employees.status" instead of "cogs.status" in that conditional. Is there a way around this?