ernie/squeel — pull request #279 by Peeja (2013-10-22 22:05:33+00:00)
Title: Bug: scope_for_create with polymorphic association

In a #where specifying a value for a polymorphic association, the _type is
not set in the #scope_for_create attributes. In vanilla AR4, _type and _id
are both set.

Failing spec is attached.