Make version reification_class use Rails' customization on polymorphism

[fsuchan]

Problem

Rails has a built-in way to customize polymorphic_type, there's a good read about it here. In a nutshell, a namespaced model such as User::Model can be stored in database using polymorphic_type user, decoupling namespacing (architecture) from database.

PaperTrail heavily relies on polymorphism and by default breaks when customizing. Specifically: In the example from above version.reify throws an error: wrong constant name user.

Solution

Looking into PaperTrail's code we found that reifier.rb simply constantizes item_type.

This line can be improved by changing it to: clazz = version.class.polymorphic_class_for(version.item_type)

Alternatives

We currently patched this line in our own code, works.

[gurgelrenan]

Hi @fsuchan,

Feel free to submit a P.R whenever you're ready. We're looking forward to reviewing it!

Thanks!