用于创建属性“货币”的弃用警告
我正在使用Rails 3.2.3和money-rails gem,我有一个产品型号,其中包含以下内容:
我的模特
class Product "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
我得到的弃权警告。
% 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 at /home/map7/project/spec/models/product_spec.rb:6) creates product with price Finished in 0.06682 seconds 1 example, 0 failures
如何修复此弃用警告?
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?
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)。 似乎没有办法绕过它。
以下是弃用消息的提交: 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和货币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。
在我的模型中添加了’currency:string’