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?