Allow includes to follow namespacing

[nagirrab]

Minor bug fix: there was a bug where if you do an include across a namespace boundary, e.g. in the case of:

class BaseResource
  relationship :intermediate, to: :one, class_name: "Namespaced::Intermediate",
end

class Namespaced::IntermediateResource
   relationship :child, to: :one
end

class Namspaced::ChildResource
  relationship :intermediate, to: :one
end

An includes request of ?includes=intermediate.child would bomb out because it was using BaseResource rather than Namespaced::IntermediateResource for looking up ChildResource. This fixes that specific issue.

Not sure what your intentions with regards to namespaced resources are in general - I've had to put a few hacks in place to make things work in general, but this particular bug fix seems like it should go in right away.

[lgebhardt]

@nagirrab Thanks!

The original intent was to have namespaces used for versioning, so it's not a surprise that you've had some issues mixing resources across namespaces. In the cases fully supported by JR the namespace of the @resource_klass and resource_klass should be the same. It's not going to be simple to get mixed namespaces fully supported, but it seems there is demand for it.