vhochstein/active_scaffold — comment on commit 0ff2d7f56810896af417f21f55095d9337a35c10
File:  line 0
By vhochstein:

That simplification was orginally added to activescaffold s official git repro. I thought, cool, looks nice and simplifies code, which was the reason I added it to my fork also.
Unfortuently, I had to realize that my specific features in my apps where broken. Reason for this is that for associations build is nt just an alias. Just try and search for "build" in activerecord gem.
So, I had to revert that "simplification"