Can a Rails 3 engine access models from it's parent application?

问题

I have a Rails Engine and I want to access the parents models. Is that possible? If so, how would I do it?

回答1:

I didn't find any official documentation about it, but here's how you could still do it:

tests = ::Test.all

It'll return all tests from the parent app Test model.

来源：https://stackoverflow.com/questions/8855965/can-a-rails-3-engine-access-models-from-its-parent-application