Angular XSRF rack middleware

rack-angular-xsrf.rb

class TokenAdder
  def initialize(app)
    @app = app
  end
 
  def call(env)
    status, headers, body = @app.call(env)
 
    response = Rack::Response.new body, status, headers

    response.set_cookie(:'XSRF-TOKEN', value: (env["rack.session"][:csrf] ||= SecureRandom.hex(32)), expires: Time.now + 3600*24)
 
    response.finish
  end
end