Unable to check user information if user is not logged in

[oranges13]

We have a situation where we needed to create a pseudo-role, such that a guest user who has no other roles can see posts that belong to them.

However, we are coming across the issue that, if a user is not logged in we receive an error because it cannot find the attribute.

#in services_controller.rb
filter_access_to :show, :attribute_check => true

#in authorization_rules.rb
role :guest do
    #services
    has_permission_on :services, :to => [:create_new, :services_misc]
    has_permission_on :services, :to => [:read, :export] do
            if_attribute :supervisorID => is {user.ID}
    end 
end

As you can see our intent is to check to make sure that the record belongs to that person and they can view it. However if you are not logged in you receive this error:

undefined method `ID' for #<Authorization::AnonymousUser:0x007fe9f80a9da0>

We tried several things to force the log in first,

has_permission_on :services, :to => [:read, :export] do
     if_attribute :current_user => is {user} do   
          if_attribute :supervisorID => is {user.ID}
     end
end 

This did not work

Is there a way to force log in so that the user information is then set?

[stffn]

This really concerns the usage. Please use the mailing list for these requests.