ruby-on-rails - Rails 覆盖验证器消息

Question

我有一个提供两种口味的网站:英语和法语。这是一些代码

app/views/user/register.html.erb
-----------------          
<% form_for .....>
  <%= f.text_field :first_name %> 
<% end %>

app/models/user.rb
------------------
class User < ActiveRecord::Base
  validates_presence_of :first_name

end 

现在，如果该网站以法语版本提供服务，则要显示错误消息，我有

app/config/locales/fr.yml
-------------------------
  activerecord:
    errors:
      messages:
        empty: "ne peut pas être vide"

因此，如果有人没有填写名字，验证器将采用该字段的名称并附加用于空子句的自定义消息

"First name ne peut pas être vide"

这是不正确的，因为法语中的“名字”是“Prénom”，因此应该是

"Prénom ne peut pas être vide"

请有人建议一种实现所需结果的方法。

Answer 1

摘自 Rails 文档中 ActiveRecord::Error 类中的generate_full_methods...

Wraps an error message into a full_message format.

The default full_message format for any locale is "{{attribute}} {{message}}". One can specify locale specific default full_message format by storing it as a translation for the key :"activerecord.errors.full_messages.format".

Additionally one can specify a validation specific error message format by storing a translation for :"activerecord.errors.full_messages.[message_key]". E.g. the full_message format for any validation that uses :blank as a message key (such as validates_presence_of) can be stored to :"activerecord.errors.full_messages.blank".

Because the message key used by a validation can be overwritten on the validates_* class macro level one can customize the full_message format for any particular validation:

# app/models/article.rb class Article < ActiveRecord::Base

validates_presence_of :title, :message => :"title.blank"   end   #  

config/locales/en.yml en:

activerecord:
  errors:
    full_messages:
      title:
        blank: This title is screwed!