CODEWITHSUNDEEP
ruby-on-railsrubydevise
user664833
user664833

Reputation: 19505

Why is current_user also available via @current_user with Devise?

The Devise README doesn't mention anything about @current_user, and I don't see any reference to it in Devise's source code - nor in my app's source code (grep -R "@current_user" app/) - yet I am able to use @current_user in my controllers. Why is that?

Upvotes: 1

Views: 116

Answers (1)

Kirti Thorat
Kirti Thorat

Reputation: 53038

When you create a Devise model, say User, then Devise generates a helper method for you dynamically, named current_user. This method returns the value of instance variable @current_user. By using @current_user you are just directly accessing the instance variable instead of via current_user method. So, you see why the values are the same.

In Devise, the implementation of the current_#{mapping} helper method is as below:

      def current_#{mapping}
        @current_#{mapping} ||= warden.authenticate(scope: :#{mapping})
      end

where mapping would be replaced by your Devise model name, which in your case is user.

Refer to current_#{mapping} method definition in Devise source code.

Upvotes: 3

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