使用Mongoid添加DateTime(日期时间隐藏)

class User
  include Mongoid::Document
  field :created_at, type: DateTime
end

class User
  include Mongoid::Document
  field :created_at, type: DateTime

  def hide_created_at
    self.created_at = nil
  end
end

def create
  @user = User.new(user_params)
  @user.hide_created_at
  @user.save
  redirect_to @user
end

<h1>User Information</h1>
<p>Name: <%= @user.name %></p>
<p>Email: <%= @user.email %></p>
<!-- Do not display the created_at field -->