undefined method current_user: Cancan and Active Scaffold

Question

I'm trying to add an action link to an active scaffold controller using

if current_user.can? :update, Post
  config.action_links.add 'export', :label => 'Export', :page => true
end

but whatever controller I try to use, I always get undefined method current_user
So, how can I check if the logged user can/cannot do something?
I've even tried with

def ability
  @ability ||= Ability.new(self)
end
delegate :can?, :cannot?, :to => :ability

as suggested here, but without success.
What's wrong with this?

score 2 · Answer 1 · answered Mar 08 '11 at 03:15

2

Note that in the normal case ActiveScaffold config is done in the class not the instance so there is no current_user set because there is no request yet.

answered Mar 08 '11 at 03:15

Michael Latta

47
1
4

score 1 · Accepted Answer · answered Nov 16 '10 at 12:37

1

current_user is a typically defined method, but it is one that you must add. it is not supplied by rails. So, you need a current_user method in your ApplicationController. There are tons of examples but I would look at the authlogic example app on github

answered Nov 16 '10 at 12:37

Jed Schneider

14,085
4
35
46

I'm using Devise, and not Authlogic: is it the same? – pasine Nov 16 '10 at 12:51
take a look at the devise example app on github. if it is not the same, it is very similar. – Jed Schneider Nov 17 '10 at 02:00

undefined method current_user: Cancan and Active Scaffold

2 Answers2