Config production

This is for checkpoint "Interlude."  Yet to see if this actually works in production.
Could I use a filter? So I would put `before_action :authorize_user` and then put a method down below, maybe in the private section like this:
```ruby
def authorize_user
  authorize @topic
end
```
That wouldn't mess with the authorize call to Pundit right?  But would calling it before an action mess with the @topic assignment?