Ruby on rails RubyonRails-更改哈希中的价格值

我通过活动reocrd获得所有产品

@results = Product.all

现在我想把每个“价格”值乘以“价格*100” 我该怎么做

@results = Product.all.select("*, `price` * 100 AS `price`")

或

类产品

或

类产品

将虚拟属性添加到app/models/product.rb

class Product < ActiveRecord::Base
  ...

  def price_in_cents  # or some other appropriate name
    price * 100
  end
  ...
end

类产品

并将其用作@results.first.price（单位：美分）

class Product < ActiveRecord::Base
  def cents
    price * 100
  end
end

class Product < ActiveRecord::Base
  ...

  def price_in_cents  # or some other appropriate name
    price * 100
  end
  ...
end