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
end

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,
                       if: proc { request.headers["X-Auth"] != "tutorial_secret" }
end

Disable csrf for tutorial react-native app
Disable csrf for tutorial react-native app

Tutorial has to send the following header:

"X-Auth": "tutorial_secret"

and then CSRF is ignored.
