Why can't find the user?

Question

Ruby on Rails

Hello. Following the instruction of the video lesson on codeschool ran into a problem. The situation is this:
There are users and there are articles. The models specify relationships, User has_many article and Articles belongs_to user. In routes we specify:

resources :users do
  resources :articles
end

Now we edit Articles_controller. The lesson says, you need to find users, do the following:

def get_user
  @user = User.find(params[:id])
end

before_filter :get_user to the very top.
I get the following Couldn't find user ='id'
How to be?
Now everything in my application is tied to current_user. But now I'm redoing it so that each user displays their own information.

Answer 1

try

resources :users do
 member do
  resources :articles
 end
end

well, put get_user under private

Answer 2

resources :users do
  resources :articles
end

In this case, in the articles controller there will be params[:user_id], look at the server console, what are the parameters of the request