问题
Rails 4 Active Record Enums are great, but what is the right pattern for translating with i18n?
回答1:
I didn't find any specific pattern either, so I simply added:
en:
user_status:
active: Active
pending: Pending...
archived: Archived
to an arbitrary .yml file. Then in my views:
I18n.t :"user_status.#{user.status}"
回答2:
Starting from Rails 5, all models will inherit from ApplicationRecord.
class User < ApplicationRecord
enum status: [:active, :pending, :archived]
end
I use this superclass to implement a generic solution for translating enums:
class ApplicationRecord < ActiveRecord::Base
self.abstract_class = true
def self.human_enum_name(enum_name, enum_value)
I18n.t("activerecord.attributes.#{model_name.i18n_key}.#{enum_name.to_s.pluralize}.#{enum_value}")
end
end
Then I add the translations in my .yml file:
en:
activerecord:
attributes:
user:
statuses:
active: "Active"
pending: "Pending"
archived: "Archived"
Finally, to get the translation I use:
User.human_enum_name(:status, :pending)
=> "Pending"
回答3:
Here is a view:
select_tag :gender, options_for_select(Profile.gender_attributes_for_select)
Here is a model (you can move this code into a helper or a decorator actually)
class Profile < ActiveRecord::Base
enum gender: {male: 1, female: 2, trans: 3}
# @return [Array<Array>]
def self.gender_attributes_for_select
genders.map do |gender, _|
[I18n.t("activerecord.attributes.#{model_name.i18n_key}.genders.#{gender}"), gender]
end
end
end
And here is locale file:
en:
activerecord:
attributes:
profile:
genders:
male: Male
female: Female
trans: Trans
回答4:
To keep the internationalization similar as any other attribute I followed the nested attribute way as you can see here.
If you have a class User:
class User < ActiveRecord::Base
enum role: [ :teacher, :coordinator ]
end
And a yml like this:
pt-BR:
activerecord:
attributes:
user/role: # You need to nest the values under model_name/attribute_name
coordinator: Coordenador
teacher: Professor
You can use:
User.human_attribute_name("role.#{@user.role}")
回答5:
Model:
enum stage: { starting: 1, course: 2, ending: 3 }
def self.i18n_stages(hash = {})
stages.keys.each { |key| hash[I18n.t("checkpoint_stages.#{key}")] = key }
hash
end
Locale:
checkpoint_stages:
starting: Saída
course: Percurso
ending: Chegada
And on the view (.slim):
= f.input_field :stage, collection: Checkpoint.i18n_stages, as: :radio_buttons
回答6:
Elaborating on user3647358's answer, you can accomplish that very closely to what you're used to when translating attributes names.
Locale file:
en:
activerecord:
attributes:
profile:
genders:
male: Male
female: Female
trans: Trans
Translate by calling I18n#t:
profile = Profile.first
I18n.t(profile.gender, scope: [:activerecord, :attributes, :profile, :genders])
回答7:
Try using TranslateEnum gem for these purposes
class Post < ActiveRecord::Base
enum status: { published: 0, archive: 1 }
translate_enum :status
end
Post.translated_status(:published)
Post.translated_statuses
@post = Post.new(status: :published)
@post.translated_status
回答8:
I've created a gem for this.
http://rubygems.org/gems/translated_attribute_value
Add to your gemfile:
gem 'translated_attribute_value'
If you have a status field for user:
pt-BR:
activerecord:
attributes:
user:
status_translation:
value1: 'Translation for value1'
value2: 'Translation for value2'
And in your view you can call like this:
user.status_translated
It works with active record, mongoid or any other class with getter/setters:
https://github.com/viniciusoyama/translated_attribute_value
回答9:
Combining the answers from Repolês and Aliaksandr, for Rails 5, we can build 2 methods that allow you to translate a single value or a collection of values from an enum attribute.
Set up the translations in your .yml file:
en:
activerecord:
attributes:
user:
statuses:
active: "Active"
pending: "Pending"
archived: "Archived"
In the ApplicationRecord class, from which all models inherit, we define a method that handles translations for a single value and another one that handles arrays by calling it:
class ApplicationRecord < ActiveRecord::Base
self.abstract_class = true
def self.translate_enum_name(enum_name, enum_value)
I18n.t("activerecord.attributes.#{model_name.i18n_key}.#{enum_name.to_s.pluralize}.#{enum_value}")
end
def self.translate_enum_collection(enum_name)
enum_values = self.send(enum_name.to_s.pluralize).keys
enum_values.map do |enum_value|
self.translate_enum_name enum_name, enum_value
end
end
end
In our views, we can then translate single values:
<p>User Status: <%= User.translate_enum_name :status, @user.status %></p>
Or the entire collection of enum values:
<%= f.select(:status, User.translate_enum_collection :status) %>
回答10:
Try the enum_help gem. From its description:
Help ActiveRecord::Enum feature to work fine with I18n and simple_form.
回答11:
Heres a t_enum helper method that I use.
<%= t_enum(@user, :status) %>
enum_helper.rb:
module EnumHelper
def t_enum(inst, enum)
value = inst.send(enum);
t_enum_class(inst.class, enum, value)
end
def t_enum_class(klass, enum, value)
unless value.blank?
I18n.t("activerecord.enums.#{klass.to_s.demodulize.underscore}.#{enum}.#{value}")
end
end
end
user.rb:
class User < ActiveRecord::Base
enum status: [:active, :pending, :archived]
end
en.yml:
en:
activerecord:
enums:
user:
status:
active: "Active"
pending: "Pending..."
archived: "Archived"
回答12:
The model:
class User < ActiveRecord::Base
enum role: [:master, :apprentice]
end
The locale file:
en:
activerecord:
attributes:
user:
master: Master
apprentice: Apprentice
Usage:
User.human_attribute_name(:master) # => Master
User.human_attribute_name(:apprentice) # => Apprentice
回答13:
I prefer a simple helper in application_helper
def translate_enum(object, enum_name)
I18n.t("activerecord.attributes.#{object.model_name.i18n_key}.#{enum_name.to_s.pluralize}.#{object.send(enum_name)}")
end
Then in my YML file :
fr:
activerecord:
attributes:
my_model:
my_enum_plural:
pending: "En cours"
accepted: "Accepté"
refused: "Refusé"
回答14:
Yet another way, I find it a bit more convenient using a concern in models
Concern :
module EnumTranslation
extend ActiveSupport::Concern
def t_enum(enum)
I18n.t "activerecord.attributes.#{self.class.name.underscore}.enums.#{enum}.#{self.send(enum)}"
end
end
YML:
fr:
activerecord:
attributes:
campaign:
title: Titre
short_description: Description courte
enums:
status:
failed: "Echec"
View :
<% @campaigns.each do |c| %>
<%= c.t_enum("status") %>
<% end %>
Don't forget to add concern in your model :
class Campaign < ActiveRecord::Base
include EnumTranslation
enum status: [:designed, :created, :active, :failed, :success]
end
回答15:
You can simply add a helper:
def my_something_list
modes = 'activerecord.attributes.mymodel.my_somethings'
I18n.t(modes).map {|k, v| [v, k]}
end
and set it up as usually:
en:
activerecord:
attributes:
mymodel:
my_somethings:
my_enum_value: "My enum Value!"
then use it with your select: my_something_list
回答16:
class ApplicationRecord < ActiveRecord::Base
self.abstract_class = true
def self.enum(definitions)
defind_i18n_text(definitions) if definitions.delete(:_human)
super(definitions)
end
def self.defind_i18n_text(definitions)
scope = i18n_scope
definitions.each do |name, values|
next if name.to_s.start_with?('_')
define_singleton_method("human_#{name.to_s.tableize}") do
p values
values.map { |key, _value| [key, I18n.t("#{scope}.enums.#{model_name.i18n_key}.#{name}.#{key}")] }.to_h
end
define_method("human_#{name}") do
I18n.t("#{scope}.enums.#{model_name.i18n_key}.#{name}.#{send(name)}")
end
end
end
end
en:
activerecord:
enums:
mymodel:
my_somethings:
my_enum_value: "My enum Value!"
enum status: [:unread, :down], _human: true
来源：https://stackoverflow.com/questions/22827270/how-to-use-i18n-with-rails-4-enums