Devise JWT Auth

application_controller.rb

  before_action :authenticate_user_from_token!
  before_action :authenticate_user!

  # Ripped from ember-simple-auth-devise
  def authenticate_user_from_token!
    if user = user_via_token
      sign_in(user, store: false)
    else
      raise NotAuthorized, 'Access is denied due to invalid token.'
    end
  end

  def user_via_token
    authd_user = nil

    authenticate_with_http_token do |token, options|
      decoded  = JsonWebToken.decode(token)
      username = options[:username].presence
      if decoded and username
        authd_user = User.find_by(id: decoded['user_id'], username: username)
      end
    end

    authd_user
  end