[Rails] Sign in and sign out

Hello,

My name is Javier Molina and I am programming a simple app to manage users in Ruby on Rails.

I read RoR Tutorial from http://ruby.railstutorial.org/chapters/sign-in-sign-out#top to sign in and sign out my app. I implemented the same configuration as it said:

sessions_helper.rb

def sign_out    

    self.current_user = nil

    cookies.delete(:remember_token)

end

sessions_controller.rb

  def destroy

    sign_out

    redirect_to root_url

  end

application.html.erb

<%= link_to "Sign out", signout_path, method: "delete" %>

routes.rb

  match '/signout', to: 'sessions#destroy',     via: 'delete'

I am able to sign in, but I can't sign out. The problem is that there are not any log error and I don't know what to do.

Any ideas?

Thanks!

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