插值阵列的I18n [英] Interpolation in I18n array

问题描述

我使用数组在区域文件能够生成各种输出方式的文本块（的ActionMailer模板，虾文件，HAML模板）是特定于语言环境。它完美地工作，但有时我想变量传递到这些调用的I18n。但是，这是行不通的。

I'm using arrays in a locale file to be able to generate blocks of text in various output methods (ActionMailer templates, Prawn documents, HAML templates) that are locale-specific. It works perfectly, but sometimes I want to pass variables into these I18n calls. However, this doesn't work.

说我的语言环境文件看起来像这样：

Say my locale file looks like this:

en:
  my_array:
    - "Line 1"
    - "Line 2"
    - "Line 3 has a %{variable}"
    - "Line 4"

我想 I18n.t的输出（'my_array'，：变量=＆GT;'变量命名变量'）来如下：

["Line 1", "Line 2", "Line 3 has a variable named variable", "Line 4"]

但是，输出是：

["Line 1", "Line 2", "Line 3 has a %{variable}", "Line 4"]

我会做插值自己检索后阵？还是有更好的方式来做到这一点？

Will I have to do the interpolation myself after retrieving the array? Or is there a better way to do this?

推荐答案

我觉得这样的事情是不是国际化的宝石原生支持，但它使用一些元编程的魔法是可行的。

I think such thing is not supported natively in i18n gem, but it's doable using some meta-programming magic.

在一个初始化（例如，配置/初始化/ i18n.rb ）添加以下

In an initializer (say, config/initializers/i18n.rb) add the following

I18n.backend.instance_eval do
  def interpolate(locale, string, values = {})
    if string.is_a?(::Array) && !values.empty?
      string.map { |el| super(locale, el, values) }
    else
      super
    end
  end
end

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