先ず無い 引用元 https://github.com/plataformatec/devise/wiki/How-To%3a-Allow-users-to-sign-in-with-something-other-than-their-email-address Important note: remember that even if you don’t want to sign in using email, you must have email in…

今回は ドキュメントに倣って項目を username にする 分類: 準備 Devise 用設定ファイルの作成 $ rails g devise:install =============================================================================== Some setup you must do manually if you haven'…