カラムを追加後にApplicationContorllerを変更
class ApplicationController < ActionController::Base
before_action :configure_permitted_parameters, if: :devise_controller?
protected
def configure_permitted_parameters
added_attrs = [ :email, :admin, :password, :password_confirmation ]
devise_parameter_sanitizer.permit :sign_up, keys: added_attrs
devise_parameter_sanitizer.permit :account_update, keys: added_attrs
devise_parameter_sanitizer.permit :sign_in, keys: added_attrs
end
end
参考記事
https://qiita.com/ryutaro9595/items/985ade15b5316e4cad82
https://qiita.com/hz1_d/items/77e440b09a1ddbe56263