我希望能够使用模型父级设置的货币动态设置模型上的货币。
像这样:
class Event < ActiveRecord::Base
belongs_to :edition
monetize :price_cents, :with_currency => proc { |event| event.edition.currency }
event.edition.currency从模型的父级返回一个符号。。。例如:gbp
但它不起作用。默认约定为:
monetize :bonus_cents, :with_currency => :gbp
这很好。。。有什么想法吗?
https://github.com/RubyMoney/money-rails
试试这个:
class Event < ActiveRecord::Base
belongs_to :edition
monetize :price_cents
def currency_for_price
Money::Currency.find(edition.currency)
end
end
我没有彻底测试,但它似乎有效。
2.0.0-p195 :012 > Event.new(
edition: Edition.new(currency: :gbp),
price: 123
).price
=> #<Money fractional:12300 currency:GBP>
2.0.0-p195 :013 > Event.new(
edition: Edition.new(currency: :usd),
price: 456
).price
=> #<Money fractional:45600 currency:USD>