Add ActiveRecord translations support

lib/reform/form/active_model/validations.rb

@@ -17,17 +17,22 @@ def self.included(includer)
         class << self
           extend Uber::Delegates
           # # Hooray! Delegate translation back to Reform's Validator class which contains AM::Validations.
-          delegates :active_model_really_sucks, :human_attribute_name, :lookup_ancestors, :i18n_scope # Rails 3.1.
+          delegates :active_model_really_sucks, :human_attribute_name, :lookup_ancestors # Rails 3.1.
 
           def validation_group_class
             Group
           end
 
+          def i18n_scope
+            :activemodel
+          end
+
           # this is to allow calls like Form::human_attribute_name (note that this is on the CLASS level) to be resolved.
           # those calls happen when adding errors in a custom validation method, which is defined on the form (as an instance method).
           def active_model_really_sucks
             Class.new(Validator).tap do |v|
               v.model_name = model_name
+              v.i18n_scope = i18n_scope
             end
           end
         end
@@ -78,6 +83,14 @@ def model_name=(name)
           @_active_model_sucks = name
         end
 
+        def i18n_scope
+          @i18n_scope || super
+        end
+
+        def i18n_scope=(value)
+          @i18n_scope = value
+        end
+
         def validates(*args, &block)
           super(*Declarative::DeepDup.(args), &block)
         end

lib/reform/form/active_record.rb

@@ -7,6 +7,12 @@ def self.included(base)
       include Reform::Form::ActiveModel
       include Reform::Form::ORM
       extend ClassMethods
+
+      class << self
+        def i18n_scope
+          :activerecord
+        end
+      end
     end
   end
 
@@ -15,9 +21,6 @@ def validates_uniqueness_of(attribute, options={})
       options = options.merge(:attributes => [attribute])
       validates_with(UniquenessValidator, options)
     end
-    def i18n_scope
-      :activerecord
-    end
   end
 
   def to_nested_hash(*)

lib/reform/rails/railtie.rb

@@ -33,9 +33,9 @@ def active_model!
         Reform::Form.class_eval do
           include Reform::Form::ActiveModel
           include Reform::Form::ActiveModel::FormBuilderMethods
+          include Reform::Form::ActiveModel::Validations
           include Reform::Form::ActiveRecord if defined?(ActiveRecord)
           include Reform::Form::Mongoid if defined?(Mongoid)
-          include Reform::Form::ActiveModel::Validations
         end
       end
 

test/active_model_translations_test.rb

@@ -0,0 +1,28 @@
+require 'test_helper'
+
+class ActiveModelTranslationsTest < MiniTest::Spec
+  class SongForm < Reform::Form
+    property :title
+    property :created_at
+  end
+
+  before do
+    I18n.backend.store_translations(:en,
+      activemodel: {
+        attributes: {
+          'active_model_translations_test/song' => {
+            title: 'Song title',
+          }
+        }
+      }
+    )
+  end
+
+  it 'translate attribute with I18n' do
+    SongForm.human_attribute_name(:title).must_equal 'Song title'
+  end
+
+  it 'translate attribute without I18n' do
+    SongForm.human_attribute_name(:created_at).must_equal 'Created at'
+  end
+end

test/active_record_test.rb

@@ -268,6 +268,3 @@ class ActiveModelAlbumForm < Reform::Form
     end
   end
 end
-
-
-

test/active_record_translations_test.rb

@@ -0,0 +1,32 @@
+require 'test_helper'
+require 'reform/active_record'
+
+class ActiveRecordTranslationsTest < MiniTest::Spec
+  class SongForm < Reform::Form
+    include Reform::Form::ActiveModel::Validations
+    include Reform::Form::ActiveRecord
+
+    property :title
+    property :created_at
+  end
+
+  before do
+    I18n.backend.store_translations(:en,
+      activerecord: {
+        attributes: {
+          'active_record_translations_test/song' => {
+            title: 'Song title',
+          }
+        }
+      }
+    )
+  end
+
+  it 'translate attribute with I18n' do
+    SongForm.human_attribute_name(:title).must_equal 'Song title'
+  end
+
+  it 'translate attribute without I18n' do
+    SongForm.human_attribute_name(:created_at).must_equal 'Created at'
+  end
+end