set up rails

app/controllers/users/omniauth_callbacks_controller.rb

@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
+  # You should configure your model like this:
+  # devise :omniauthable, omniauth_providers: [:twitter]
+
+  # You should also create an action method in this controller like this:
+  # def twitter
+  # end
+
+  # More info at:
+  # https://github.com/heartcombo/devise#omniauth
+
+  # GET|POST /resource/auth/twitter
+  # def passthru
+  #   super
+  # end
+
+  # GET|POST /users/auth/twitter/callback
+  # def failure
+  #   super
+  # end
+
+  # protected
+
+  # The path used when OmniAuth fails
+  # def after_omniauth_failure_path_for(scope)
+  #   super(scope)
+  # end
+end