Ruby on Rails

Hi Rails Guru, Currently I am working i my project, and that project using rails_api gem. I want to add session management for authentication, but it seems the session does not working. Here is my configuration in config/initializer/session_store.rb:

Pmcapi::Application.config.session_store :cookie_store, {

key: '_pmcapi_session',   expire_after: 1.hour  

}

And I add config.api_only = false in application.rb (http://stackoverflow.com/questions/15342710/adding-cookie-session-store-back-to-rails-api-app)

and in my session_controller, I adding session to store token

(in session_controller.rb)

def create    #just to generate new token    user.reset_sso_token!    session[:token] ||= user.sso_token    self.current_user = user    redirect_to root_path  end  

when i am in application_controller, i want to access session[:token] but the result is nil (in application_controller.rb)

def authenticate_user!    #puts("User Authentication")    #puts(request.authorization)    #puts(request)    @user = User.authenticate_with_token(session[:token])    #head :unauthorized unless @user.present?    redirect_to sign_in_path if @user.nil?  end

Please, i need help. I have stucked with this, thanks