Rails View 中 多语言的实践。

_filter_form.html.erb

<% # app/views/orders/_filter_form.html.erb %>
<%= t '.provider' %>
<%= t '.start_at' %>
<%= t '.end_at' %>
<%= t '.no' %>
<%= t '.mobile' %>

application_helper.rb

# -*- encoding: utf-8 -*-

module ApplicationHelper
  # 针对 VIEWS 中，多语言的加强
  def t(key, opts = {})
    # VIEWS 相关
    if key =~ /^\./
      lookups = []
        paths = @virtual_path.split("/")
      default = "defaults#{key}"
      # 避免再次调用，scope_key_by_partial
      # /actionview/lib/action_view/helpers/translation_helper.rb
      key = (paths.join('.') + key)
      # 根据路径找默认值
      total = paths.count
      if total >= 2 # 路径大于2级
        -2.downto(-total).each do |i|
          lookups << (paths[0..i] << default).join('.')
        end
      end
      lookups << default # 全局默认
      # 最后（找/返回）指定（路径/字符串）
      unless opts[:default].blank?
        if opts[:default].is_a?(Array)
          lookups += opts.delete(:default)
        else
          lookups << opts.delete(:default)
        end
      end
      # 
      opts[:default] = lookups
    end
    super(key, opts).presence
  end
end

zh.yml

# -*- encoding: utf-8 -*-
# config/locales/views/zh.yml

zh:
  defaults:
    provider: '平台'
    start_at: '开始时间'
    end_at: '结束时间'
  orders:
    defaults:
      mobile: '客人手机号'
    filter_form:
      'no': '订单号'