Question

我有以下模型

class Customer
   include Mongoid::Document
   field :first_name, type: String
   field :last_name, type: String
   embeds_one :billing_address, as: :addressable
   embeds_one :shipping_address, as: :addressable
end

class Address
  include Mongoid::Document
  field :country, type: String
  field :province, type: String
  field :city, type: String
  embedded_in :addressable, polymorphic: true
end

我希望能够直接通过1 POST到/ customer

保存帐单邮寄地址和送货地址

在我的CustomerController中，我有以下

   def create
      @customer = Customer.new(customer_params)
      if @customer.save
        render json: @customer, status: :created
      else
        render json: @customer.errors, status: :unprocessable_entity
      end
    end

   private
   def customer_params
      params.require(:customer).permit(:first_name, :last_name,
      :billing_address => [:country, :province, :city],
      :shipping_address => [:country, :province, :city])
   end

现在我每次运行它时都会出现错误uninitialized constant BillingAddress

params似乎试图将billing_address字段转换为模型，但我的模型是Address，而不是billing_address。

有没有告诉params使用Address而不是BillingAddress。如果没有，那么实现这种嵌套保存的最佳替代方法是什么？

Answer 1

billing_address应为billing_address_attributes：

def customer_params
  params.require(:customer).permit(:first_name, :last_name,
  :billing_address_attributes => [:country, :province, :city],
  :shipping_address_attributes => [:country, :province, :city])
end

uninitialized constant BillingAddress错误是因为它从billing_address猜测了类名。

要解决此问题，请添加class_name：embeds_one :billing_address, as: :addressable, class_name: "Address"

参数需要mongoid的嵌套属性

1 个答案: