Rails4.1でdeviseのログインIDをemailとusernameのどちらでも可能にする - Qiita

# 以下を追加 before_filter :configure_permitted_parameters, if: :devise_controller? protected def configure_permitted_parameters devise_parameter_sanitizer.for(:sign_up) { |u| u.permit(:username, :email, :password, :password_confirmation, :remember_me) } devise_parameter_sanitizer.for(:sign_in) { |u| u.permit(:login, :username, :email, :password, :remember_me) } devise_parameter_sanitizer.for(:account_