ruby-on-rails - 如何在验证期间将 ivars 插入 Rails i18n 字符串？

Question

假设我有一个像这样的模型类:

class Shoebox < ActiveRecord::Base
  validates_inclusion_of :description, :in => ["small", "medium"],
    :message => I18n.t("activerecord.errors.models.shoebox.with_name",
                     :name => name)
end

还有一些 yaml:

en:
 activerecord:
  errors:
   models:
    shoebox:
     with_name: "the description of %{name} is not in the approved list"

我创建了一个新的鞋盒:

   s = Shoebox.new(:description => "large", :name => "Bob")
   s.valid?

但是当我查看错误(s.errors.first.message)时，我看到:

"the description of Shoebox is not in the approved list"

而不是:

"the description of Bob is not in the approved list"

我尝试过 :name => name、:name => :name、:name => lambda{name}, :name => lambda{:name}.

我尝试创建一个辅助方法

 def shoebox_name
   name
 end

并传递 :name => Shoesbox_name、:name => :shoebox_name、:name => lambda{shoebox_name} 和 :name => lambda {:shoebox_name}.

如何获取要插入到字符串中的名称的 ivar 值？

Answer 1

尝试删除验证中的消息选项，并将您的 yaml 更改为:

en:
 activerecord:
  errors:
   models:
    shoebox:
     description:
       inclusion: "the description of %{name} is not in the approved list"

参见http://guides.rubyonrails.org/i18n.html#translations-for-active-record-models了解更多详情