Merge pull request #230 from ryu-sato/i18n

support i18n

README.md

@@ -606,6 +606,20 @@ Constants are formed by first stripping all non-word characters and then upcasin
 
 The field specified as the _enum_accessor_ must contain unique data values.
 
+## I18n
+
+ActiveHash supports i18n as ActiveModel.
+Put following code in one of your locale file (e.g. `config/locales/LANGUAGE_CODE.yml`)
+
+```yaml
+# for example, inside config/locales/ja.yml
+ja:
+  activemodel:
+    models:
+      # `Country.model_name.human` will evaluates to "国"
+      country: "国"
+```
+
 ## Contributing
 
 If you'd like to become an ActiveHash contributor, the easiest way it to fork this repo, make your changes, run the specs and submit a pull request once they pass.

lib/active_hash/base.rb

@@ -24,7 +24,7 @@ class Base
     class_attribute :_data, :dirty, :default_attributes, :scopes
 
     if Object.const_defined?(:ActiveModel)
-      extend ActiveModel::Naming
+      extend ActiveModel::Translation
       include ActiveModel::Conversion
     else
       def to_param

spec/active_hash/base_spec.rb

@@ -1830,4 +1830,28 @@ class Book < ActiveRecord::Base
     end
   end
 
+  describe 'ActiveModel::Translation' do
+    around(:example) do |example|
+      if Object.const_defined?(:ActiveModel)
+        example.run
+      else
+        skip
+      end
+    end
+
+    context 'if the locale is set to :ja' do
+      around(:example) do |example|
+        current_locale = I18n.locale
+        I18n.locale = :ja
+
+        example.run
+
+        I18n.locale = current_locale
+      end
+
+      subject { Country.model_name.human }
+
+      it { is_expected.to eq('国') }
+    end
+  end
 end

spec/fixtures/locales/ja.yml

@@ -0,0 +1,4 @@
+ja:
+  activemodel:
+    models:
+      country: "国"

spec/spec_helper.rb

@@ -23,3 +23,5 @@
     end
   end
 end
+
+I18n.load_path << File.expand_path("fixtures/locales/ja.yml", __dir__)