Rails 3.1，habtm关系的价值内部化? [英] Rails 3.1, internalization of values from a habtm relationship?

问题描述

我得到了一个HABTM类别的事件模型.这种关系可以正常工作，我可以毫无问题地从类别"中插入/检索值.

I got a Event model that HABTM Categories. The relationship works fine and I can insert/retrieve values from Categories with no problem.

我的问题是，有没有一种方法可以对这些类别的值进行interzationalize(I18n).

My questions is, is there a way to interzationalize(I18n) the values of this categories.

类别模型

class Category < ActiveRecord::Base
 has_and_belongs_to_many :events
end

事件模型

class Event < ActiveRecord::Base
....
has_and_belongs_to_many :categories
....

_form.html.haml(用于事件)

_form.html.haml (for events)

- Category.all.each do |category|
 .field
   = check_box_tag "category_ids[]", category.id, @event.category_ids.include?(category.id)
   = category.name

推荐答案

我假设类别几乎是固定的(否则您将无法对它们进行任何i18n操作)

I'm assuming the categories are pretty much fixed (otherwise you wouldn't really be able to do any i18n on them)

一种解决方案是将类别存储为键(带有下划线)，并为每个键将i18n添加到您的语言环境文件中:

One solution would be to save the categories in the database as keys (with underscores) and for each key add the i18n to your locale files:

en.yml

categories:
  some_category: "Some category text"
  some_other_category: "Some other category text"
  ......

如果您这样做，例如Category.all.map(&:name)将导致["some_category", "some_other_category", ....]

And if you do for example Category.all.map(&:name) will result in ["some_category", "some_other_category", ....]

在您看来:

- Category.all.each do |category|
 .field
   = check_box_tag "category_ids[]", category.id, @event.category_ids.include (category.id)
   = I18n.t("categories.#{category.name}")

请注意，如果您尝试动态执行此操作，那么这不是一个好的解决方案(如果是这种情况，则需要将翻译存储在数据库中，并且

Note this is not a good solution if you're trying to do this dynamically (if that's the case, you're going to need to store the translations in the database, and this might help)

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