Add ability to specify specific struct class for auto_struct

Issues
3

Sorry for the late reply, busy these last few weeks.

After thinking about this a little more, I think we definitely should add a way to ensure a proper struct/entity is generated. I see two options:

  1. Specify the exact class that should be inherited from when building the struct class.

  2. And/or specify the behavior the resulting struct should have by allowing modules to be included when building the class.

So something like:

class Product < ROM::Relation[:sql]
  decorate(
    AttachedFile[:warranty],
    Reviewable,
    Categorizable
  )
  # ...
end

This would be nice because it makes it much less tedious to setup commonly used data access methods, without having to drop into another file/etc. I often find myself hopping around to do this when all I really need is some simple behavior.

I think having the ability to do both 1 and 2 would be a huge win :slight_smile: