Rails 5：你能用两个不同的计数将字符串中的两个单词复数吗？

Question

我正在为列出产品评论摘要的商店构建视图。我正在按分数对评论进行分组，我希望在每组顶部有一个字符串，形式为“10 条 5 星评论”。我知道，如果我只想将“评论”复数化，我可以这样做en.rb：

en: {
  reviews_header: {
    one: "1 review",
    other: "%{count} reviews"
  }
}

是否有一种reviews_header哈希格式可以让我指定“评论”和“明星”的计数，以便在必要时将它们都复数化？在伪代码中，我想象的是：

en: {
    reviews_header: {
        counts: [ :review_count, :star_count ],
        review_count: {
            one: {
                star_count: {
                    one: "1 review with 1 star",
                    other: "1 review with %{star_count} stars"
                }
            },
            other: {
                star_count: {
                    one: "%{review_count} reviews with 1 star",
                    other: "%{review_count} reviews with %{star_count} stars"
                }
            }        
        }
    }
}

我会用t(:reviews_header, review_count: 10, star_count: 5).

我现在正在做的是将字符串更改为“10 条 5 星评论”的形式，这解决了“星级”复数的问题，但这在其他语言中不起作用。

Answer 1

这里有一个嵌套复数的情况。虽然我对 Ruby 的了解还很初级，但我找不到任何文档可以通过 Ruby 内置的 i18n 功能为这种嵌套复数情况提供解决方案。然而，在支持ICU Library的编程语言中，可以从MessageFormat中受益。

使用这个Ruby 库进行 MessageFormat 解析和格式化，可以手工制作一个嵌套的 MessageFormat 来覆盖该字符串的所有变体，从而覆盖任何语言中嵌套复数规则的复杂性。请记住，对于大多数语言来说，您不需要大部分规则，但有少数语言（例如阿拉伯语和俄语）需要许多这样的情况；阿拉伯语有 2 的特殊情况，俄语有 1 的特殊情况（1、21、31、1001，但没有 11）。可以在此处找到 Unicode CLDR 项目的图表，其中列出了所有语言的复数规则。

通常，我会培训翻译人员使用这个在线工具（来自同一开发人员message-format-rb）并根据其语言的需要翻译 MessageFormat。

这是一个完整的、最大的 MessageFormat，后面是 Ruby 代码片段：

{review_count, plural, 
=0 {
    {star_count, plural,
        other {no reviews}}
}
zero {
    {star_count, plural,
        zero {{review_count} reviews with {star_count} stars} 
        one {{review_count} review with {star_count} star}
        two {{review_count} reviews with {star_count} stars}
        few {{review_count} reviews with {star_count} stars}
        other {{review_count} reviews with {star_count} stars}}
}
one {
    {star_count, plural,
        zero {{review_count} review with {star_count} stars}
        one {{review_count} review with {star_count} star}
        two {{review_count} review with {star_count} stars}
        few {{review_count} review with {star_count} stars}
        other {{review_count} review with {star_count} stars}}
}
two {
    {star_count, plural,
        zero {{review_count} reviews with {star_count} stars}
        one {{review_count} review with {star_count} star}
        two {{review_count} reviews with {star_count} stars}
        few {{review_count} reviews with {star_count} stars}
        other {{review_count} reviews with {star_count} stars}}
}
 few { 
    {star_count, plural,
         zero {{review_count} reviews with {star_count} stars} 
         one {{review_count} review with {star_count} star}
         two {{review_count} reviews with {star_count} stars}
         few {{review_count} reviews with {star_count} stars}
         other {{review_count} reviews with {star_count} stars}}
}
other {
    {star_count, plural,
        zero {{review_count} reviews with {star_count} stars}
        one {{review_count} review with {star_count} star}
        two {{review_count} reviews with {star_count} stars}
        few {{review_count} reviews with {star_count} stars}
        other {{review_count} reviews with {star_count} stars}}
}
}

以及 Ruby 片段：

require 'message_format'
require 'test/unit/assertions'
include Test::Unit::Assertions

icumf = "{review_count, plural, =0 {{star_count, plural,other {no reviews}}} zero { {star_count, plural, zero {{review_count} reviews with {star_count} stars} one {{review_count} review with {star_count} star} two {{review_count} reviews with {star_count} stars} few {{review_count} reviews with {star_count} stars} other {{review_count} reviews with {star_count} stars}}}one {{star_count, plural, zero {{review_count} review with {star_count} stars} one {{review_count} review with {star_count} star} two {{review_count} review with {star_count} stars} few {{review_count} review with {star_count} stars} other {{review_count} review with {star_count} stars}}} two {{star_count, plural, zero {{review_count} reviews with {star_count} stars} one {{review_count} review with {star_count} star} two {{review_count} reviews with {star_count} stars} few {{review_count} reviews with {star_count} stars} other {{review_count} reviews with {star_count} stars}}} few {{star_count, plural,zero {{review_count} reviews with {star_count} stars} one {{review_count} review with {star_count} star} two {{review_count} reviews with {star_count} stars} few {{review_count} reviews with {star_count} stars} other {{review_count} reviews with {star_count} stars}}} other {{star_count, plural, zero {{review_count} reviews with {star_count} stars} one {{review_count} review with {star_count} star} two {{review_count} reviews with {star_count} stars} few {{review_count} reviews with {star_count} stars}        other {{review_count} reviews with {star_count} stars}}}}"

# Set the locale to get the plural rules for that locale
message = MessageFormat.new(icumf, 'en')
assert_equal message.format({ :review_count => 0, :star_count => 0 }), 'no reviews'
assert_equal message.format({ :review_count => 0, :star_count => 100 }), 'no reviews'
assert_equal message.format({ :review_count => 1, :star_count => 2 }), '1 review with 2 stars'
assert_equal message.format({ :review_count => 2, :star_count => 5 }), '2 reviews with 5 stars'