communication with rails and coffeescript

alert displays

The page at localhost:3000 says:
first_time=true; profile=afidwogiowjero;

gistfile1.rb

class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  protect_from_forgery with: :exception
  before_action :first_time_cookie_to_js, :set_hash
  after_filter :set_first_time_cookie
  private

  def is_active controller
    'active' if params[:controller] == controller
  end

  def set_first_time_cookie
    ## trigger jquery model popup
    cookies.permanent[:first_time] ||= true
  end

  def first_time_cookie_to_js
    ### cookie to var and to js available.output in js is "first_time=true" if it is set
    @cookie = cookies[:first_time]
  end

  def set_hash
    @hashids = Hashids.new(("blah blah blah", 8)
  end
end

js

ready =  ->
  alert(@cookie)
  unless @cookie == "true"
    $('#myModal').modal()

$(document).on('page:change', ready)