* [Registerable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/Registerable): handles signing up users through a registration process, ... ... html.erb -->

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... Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController def facebook @user = User. ... users/omniauth_callbacks_controller.rb. В этой omniauth_callbacks_controller.rb class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController ... class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController ... # def passthru ... app/views/users/sessions/new.html.erb. View file ... I'm trying to use zammad as authentication backend for fabmanager trough oauth2,I've followed fab-manager/sso_with_github.md at master. This does make sense; because Users::OmniauthCallbacksController#passthru is getting the POST request as HTML, it's looking for an HTML template ... ... Devise/Google OAuth 2: Not found. Authentication passthru ... users featured in this video: Zack Shapiro (https://stackoverflow ... After reconfigure and restart gitlab, I was able to see the SSO sign in icon. But when i click it to login through the OpenID Connect provider, the 404 page ... Which means that devise is unable to recognize your facebook callback. Make sure you setup up your callback controller properly or post your ... Trying to implement omniauth + google_oauth2 into token auth, with no luck. Am I missing any settings required?