2 files changed, 60 insertions, 0 deletions
diff --git a/app/models/concerns/admin_column.rb b/app/models/concerns/admin_column.rb
new file mode 100644
index 000000000..6e19f5aa5
--- /dev/null
+++ b/app/models/concerns/admin_column.rb
@@ -0,0 +1,17 @@
+module AdminColumn
+  extend ActiveSupport::Concern
+
+  included do
+    class << self
+      attr_reader :non_admin_columns
+    end
+
+    @non_admin_columns = []
+  end
+
+  def for_admin_column
+    self.class.content_columns.reject { |c| self.class.non_admin_columns.include?(c.name) }.each do |column|
+      yield(column.human_name, send(column.name), column.type.to_s, column.name)
+    end
+  end
+end
diff --git a/app/models/concerns/translatable.rb b/app/models/concerns/translatable.rb
new file mode 100644
index 000000000..bc89e4c3b
--- /dev/null
+++ b/app/models/concerns/translatable.rb
@@ -0,0 +1,43 @@
+module Translatable
+  extend ActiveSupport::Concern
+
+  included do
+    accepts_nested_attributes_for :translations, :reject_if => :empty_translation_in_params?
+  end
+
+  def find_translation_by_locale(locale)
+    translations.find_by_locale(locale)
+  end
+
+  def translated_versions
+    translations
+  end
+
+  def ordered_translations
+    translations.select do |translation|
+      I18n.available_locales.include?(translation.locale)
+    end.sort_by do |translation|
+      I18n.available_locales.index(translation.locale)
+    end
+  end
+
+  def build_all_translations
+    I18n.available_locales.each do |locale|
+      if translations.none? { |translation| translation.locale == locale }
+        translations.build(:locale => locale)
+      end
+    end
+  end
+
+  def translated_versions=(translation_attrs)
+      warn "[DEPRECATION] #{self.class.name}#translated_versions= will be replaced " \
+           "by #{self.class.name}#translations_attributes= as of release 0.22"
+      self.translations_attributes = translation_attrs
+  end
+
+  private
+
+  def empty_translation_in_params?(attributes)
+    attributes.select { |k, v| v.present? && k.to_s != 'locale' }.empty?
+  end
+end