在RoR中对UTF-8字符串进行排序 [英] Sorting UTF-8 strings in RoR

问题描述

我正在尝试找出在Ruby on Rails中对UTF-8字符串进行排序的正确"方法.

I am trying to figure out a 'proper' way of sorting UTF-8 strings in Ruby on Rails.

在我的应用程序中，我有一个选择框，其中填充了国家/地区.当我的应用程序已本地化时，每个现有的语言环境都有一个country.yml文件，该文件将一个国家/地区的ID与该国家/地区的本地化名称相关联.我无法在yml文件中手动对字符串进行排序，因为我需要ID在所有语言环境中都保持一致.

In my application, I have a select box that is populated with countries. As my application is localized, each existing locale has a countries.yml file that relates a country's id to the localized name for that country. I can't sort the strings manually in the yml file because I need the ID to be consistent across all locales.

我所做的是创建一个ascii_name方法，该方法使用 unidecode gem将带重音符号和非拉丁字母的字符转换为它们的ascii等效字符(例如，Afeganistão"将变为"Afeganistao")，然后对其进行排序:

What I have done is create a ascii_name method which uses the unidecode gem to convert accented and non-latin characters to their ascii equivalent (for instance, "Afeganistão" would become "Afeganistao"), and then sort on that:

require 'unidecode'

class Country
  def ascii_name
    Unidecoder.decode(name).gsub("[?]", "").gsub(/`/, "'").strip
  end
end

Country.all.sort_by(:&ascii_name)

但是，这存在明显的问题:

However, there are obvious issues with this:

• 由于可能没有直接相似的拉丁字符，因此无法正确地对非拉丁语言环境进行排序.
• 在字母和字母的所有重音形式之间没有区别(例如，A和Ä可以互换)

有人知道我可以对字符串进行排序的更好方法吗?

Does anyone know of a better way that I could sort my strings?

推荐答案

http://github.com/grosser/sort_alphabetical

该宝石应有帮助.它将sort_alphabetical和sort_alphabetical_by方法添加到Enumberable.

This gem should help. It adds sort_alphabetical and sort_alphabetical_by methods to Enumberable.

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