Support i18n attributes for confirmation

Author: bcardarella

activemodel/lib/active_model/validations/confirmation.rb

@@ -5,7 +5,8 @@ module Validations
     class ConfirmationValidator < EachValidator
       def validate_each(record, attribute, value)
         if (confirmed = record.send("#{attribute}_confirmation")) && (value != confirmed)
-          record.errors.add(:"#{attribute}_confirmation", :confirmation, options.merge(:attribute => attribute))
+          human_attribute_name = record.class.human_attribute_name(attribute)
+          record.errors.add(:"#{attribute}_confirmation", :confirmation, options.merge(:attribute => human_attribute_name))
         end
       end
 

activemodel/test/cases/validations/confirmation_validation_test.rb

@@ -44,12 +44,31 @@ def test_validates_confirmation_of_for_ruby_class
     p.karma_confirmation = "None"
     assert p.invalid?
 
-    assert_equal ["doesn't match karma"], p.errors[:karma_confirmation]
+    assert_equal ["doesn't match Karma"], p.errors[:karma_confirmation]
 
     p.karma = "None"
     assert p.valid?
   ensure
     Person.reset_callbacks(:validate)
   end
 
+  def test_title_confirmation_with_i18n_attribute
+    @old_load_path, @old_backend = I18n.load_path.dup, I18n.backend
+    I18n.load_path.clear
+    I18n.backend = I18n::Backend::Simple.new
+    I18n.backend.store_translations('en', {
+      :errors => {:messages => {:confirmation => "doesn't match %{attribute}"}},
+      :activemodel => {:attributes => {:topic => {:title => 'Test Title'}}}
+    })
+
+    Topic.validates_confirmation_of(:title)
+
+    t = Topic.new("title" => "We should be confirmed","title_confirmation" => "")
+    assert t.invalid?
+    assert_equal ["doesn't match Test Title"], t.errors[:title_confirmation]
+
+    I18n.load_path.replace @old_load_path
+    I18n.backend = @old_backend
+  end
+
 end

activemodel/test/cases/validations/i18n_validation_test.rb

@@ -81,7 +81,7 @@ def test_errors_full_messages_uses_format
     test "validates_confirmation_of on generated message #{name}" do
       Person.validates_confirmation_of :title, validation_options
       @person.title_confirmation = 'foo'
-      @person.errors.expects(:generate_message).with(:title_confirmation, :confirmation, generate_message_options.merge(:attribute => :title))
+      @person.errors.expects(:generate_message).with(:title_confirmation, :confirmation, generate_message_options.merge(:attribute => 'Title'))
       @person.valid?
     end
   end