ruby-on-rails-3 - 'with_indifferent_access' 在 Rails 3 中具有多态关联

Question

我正在尝试使用一些嵌套属性创建记录，并且嵌套属性位于多态模型中；像这样的东西：

class Office < ActiveRecord::Base
  attr_accessible :name, :description, :address_attributes

  has_one :address, as: :location_data_source

  accepts_nested_attributes_for :address
end

class Shop < ActiveRecord::Base
  attr_accessible :name, :description, :address_attributes

  has_one :address, as: :location_data_source

  accepts_nested_attributes_for :address
end

class Address < ActiveRecord::Base
    attr_accessible :street, :city

    belongs_to :location_data_source, polymorphic: true
end

我想创建这样的记录：

o = Office.create(:name = 'The Big Office', description = 'a really big office' :address_attributes => [:street => 'main street', :city => 'No Name City'])

但我收到一个“with_indifferent_access”错误：

NoMethodError：未定义的方法“with_indifferent_access”用于...

我想我很挣扎，因为我真的不明白错误的含义。有任何想法吗？