Model mixin module madness

If I have several models which exhibit the same functionality, it seems
makes sense to create a mixin, ‘include’ it in each model and save
myself some work and repeated code.

Where can I define a module which will be available to all models? I
can’t seem to find a documented place for them.

Alternatively, is there a Rails-standard way of achieving the effect?

Ben

I’ve done this before by adding the mixin source file to the model
folder.
I suspect it would work from lib/ too.

Cheers,

Dan.