9

我正在使用带有 money-rails gem 的 Rails 3.2.3,并且我有一个产品模型,它具有以下内容:

我的模型

class Product < ActiveRecord::Base
  attr_accessible :name, :price

  composed_of :price,
  :class_name => "Money",
  :mapping => [%w(price_cents cents), %w(currency currency_as_string)],
  :constructor => Proc.new { |cents, currency| Money.new(cents || 0, currency || Money.default_currency) },
  :converter => Proc.new { |value| value.respond_to?(:to_money) ? value.to_money : raise(ArgumentError, "Can't convert #{value.class} to Money") }


end

我的测试

require 'spec_helper'

describe Product do
  context "testing money gem" do
    it "creates product with price" do
      product = Product.create(:price => 200)
      product.price.should eq(200)
      product.price_cents.should eq(20000)
    end
  end
end

我收到了弃用警告。

% rspec spec/models/product_spec.rb

Product
  testing money gem
DEPRECATION WARNING: You're trying to create an attribute `currency'. Writing arbitrary attributes on a model is deprecated. Please just use `attr_writer` etc. (called from block (3 levels) in <top (required)> at /home/map7/project/spec/models/product_spec.rb:6)
    creates product with price

Finished in 0.06682 seconds
1 example, 0 failures

如何解决此弃用警告?

更新

如果我在表格中添加“货币”,它就会开始工作。我应该这样做吗?

4

2 回答 2

14

显然,在 Rails 3.2 及更高版本中,不再允许任意属性(未存储在数据库中的属性)。似乎没有办法解决它。

这是弃用消息的提交:https ://github.com/rails/rails/commit/b2955edc ,原因如下:https ://github.com/rails/rails/commit/50d395f96ea05da1e02459688e94bff5872c307b

在您的情况下 price_cents 和 currency 仍然需要存储在数据库中,然后您的组合类将从那里获取它。

于 2012-05-16T19:00:15.650 回答
1

在我的模型中添加了“货币:字符串”

于 2012-05-16T04:10:48.983 回答