Why is Devise's “current_user” not available at the model layer?

问题

There are many posts about Devise and the lack of availability of "current_user" for use in models. There are numerous work arounds posted here and elsewhere. However, i haven't found the answer to "why" in any of the posts. Is this a security issue? If not, why?

回答1:

Because you don't have access to a session variable inside a model, it's not a Devise issue or something related to security. It's related to the MVC pattern used in Rails.

来源：https://stackoverflow.com/questions/5884132/why-is-devises-current-user-not-available-at-the-model-layer