Simplify Authentication with OmniAuth Callbacks Passthru A Step-by-Step Guide

$ bin/rails g devise:install create config/initializers/devise.rb ... devise_for :users, controllers: {omniauth_callbacks: "users/ ... Authentication passthru after ... I found that is caused by the controller for :omniauth_callbacks in devise route is not specified. Besides the standard steps to set up Omniauth and Omniauth GitHub, we need to add omniauth-rails_csrf_protection to bring CSRF Protection to the requests. ... omniauth_callbacks => "callbacks" }, as: ' ... passthru auth_user_google_oauth2_omniauth_callback GET|POST /omniauth/google_oauth2 ... ... Devise in which controller we will implement Omniauth callbacks: ... Authentication passthru. try changing this. <%= link_to "Sign in with ... :format) omniauth_callbacks#passthru user_line_omniauth_callback GET ... DeviseでUserモデルを作成していると思うのでそのままUserモデルを ... :to => "devise/omniauth_callbacks#passthru",. 398. 398. :as => :omniauth_authorize,. 399. 399. :via => [:get, :post]. 400. 400. 401. 401. match "/users/auth/: ... 404, plain: "Not found. Authentication passthru." end def failure ... omniauth_callbacks' end end. https://github.com/heartcombo/devise ... flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => user.provider.titleize.split(" ").first sign_in_and_redirect user ... :format) | devise/omniauth_callbacks#facebook user_google_omniauth_authorize_path | GET\|POST | /omniauth/google(.:format) | devise/omniauth_callbacks#passthru ...