Allow to specify default attributes names translation in I18n yml files.

For example, you could easily specify :created_at and :updated_at translations as:

  en:
    attributes:
      created_at: "Created at"
      updated_at: "Updated at"

This configuration is built on ActiveModel, so it means those translations are
shared between different ORMs as well (but always as a fallback).

2 files changed, 8 insertions, 2 deletions

diff --git a/activemodel/lib/active_model/translation.rb b/activemodel/lib/active_model/translation.rb
index e5ef1e6114..2d2df269d0 100644
--- a/activemodel/lib/active_model/translation.rb
+++ b/activemodel/lib/active_model/translation.rb
@@ -25,13 +25,14 @@ module ActiveModel
     # Specify +options+ with additional translating options.
     def human_attribute_name(attribute, options = {})
       defaults = lookup_ancestors.map do |klass|
-        :"#{klass.model_name.underscore}.#{attribute}"
+        :"#{self.i18n_scope}.attributes.#{klass.model_name.underscore}.#{attribute}"
       end
 
+      defaults << :"attributes.#{attribute}"
       defaults << options.delete(:default) if options[:default]
       defaults << attribute.to_s.humanize
 
-      options.reverse_merge! :scope => [self.i18n_scope, :attributes], :count => 1, :default => defaults
+      options.reverse_merge! :count => 1, :default => defaults
       I18n.translate(defaults.shift, options)
     end
 
diff --git a/activemodel/test/cases/translation_test.rb b/activemodel/test/cases/translation_test.rb
index bfc1ca12e6..e25d308ca1 100644
--- a/activemodel/test/cases/translation_test.rb
+++ b/activemodel/test/cases/translation_test.rb
@@ -11,6 +11,11 @@ class ActiveModelI18nTests < ActiveModel::TestCase
     I18n.backend.store_translations 'en', :activemodel => {:attributes => {:person => {:name => 'person name attribute'} } }
     assert_equal 'person name attribute', Person.human_attribute_name('name')
   end
+
+  def test_translated_model_attributes_with_default
+    I18n.backend.store_translations 'en', :attributes => { :name => 'name default attribute' }
+    assert_equal 'name default attribute', Person.human_attribute_name('name')
+  end
   
   def test_translated_model_attributes_with_symbols
     I18n.backend.store_translations 'en', :activemodel => {:attributes => {:person => {:name => 'person name attribute'} } }