如何将Rails中的devise设置为将一个特定电子邮件作为有效电子邮件接受

gem 'devise'

rails generate devise User
rails db:migrate

class User < ApplicationRecord
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable
end

<%= f.email_field :email_confirmation, autofocus: true, autocomplete: "email" %>

<%= f.label :email_confirmation %>

class ApplicationController < ActionController::Base
  before_action :configure_permitted_parameters, if: :devise_controller?

  protected

  def configure_permitted_parameters
    devise_parameter_sanitizer.permit(:sign_up, keys: [:email_confirmation])
  end
end

en:
  devise:
    registrations:
      signed_up_but_unconfirmed: "A message with a confirmation link has been sent to your email address. Please follow the link to activate your account."