Feature translation status country flags

lib/active_admin/globalize3/engine.rb

@@ -1,3 +1,5 @@
+require 'active_admin/globalize3/filter_empty_translations'
+
 module ActiveAdmin
   module Globalize3
     class Engine < ::Rails::Engine
@@ -13,6 +15,14 @@ class Engine < ::Rails::Engine
         ActiveAdmin.application.register_javascript "active_admin/active_admin_globalize3.js"
       end
 
+      # Register a before_filter in ActionController that will filter out
+      # empty translations submitted by activeadmin-globalize3.
+      # See ActiveAdmin::Globalize3::FilterEmptyTranslations#filter_empty_translations
+      initializer "activeadmin-globalize3.load_helpers" do |app|
+        ActionController::Base.send :include, ActiveAdmin::Globalize3::FilterEmptyTranslations
+        ActionController::Base.send :before_filter, :filter_empty_translations, only: [:create, :update]
+      end
+
     end
   end
 end

lib/active_admin/globalize3/filter_empty_translations.rb

@@ -0,0 +1,48 @@
+module ActiveAdmin
+  module Globalize3
+    module FilterEmptyTranslations
+      private
+      # Activeadmin-globalize3 renders inputs for all translations,
+      # resulting in many empty translations being created by globalize.
+      #
+      # For instance, given the available locales L1, L2 and L2, the
+      # following params would be submitted on 'create':
+      #
+      # {
+      #   :
+      #   MODEL => {
+      #     "translations_attributes" => {
+      #       "0" => {
+      #         "locale"=>"L1", "id" => "", ATTR1 => "", ATTR2 => "", ...
+      #       }
+      #       "1" => {
+      #         "locale"=>"L2", "id" => "", ATTR1 => "", ATTR2 => "", ...
+      #       }
+      #       "2" => {
+      #         "locale"=>"L3", "id" => "", ATTR1 => "", ATTR2 => "", ...
+      #       }
+      #     }
+      #   }
+      #   :
+      # }
+      #
+      # Given these parameters, globalize3 would create a record for every
+      # possible translation - even empty ones.
+      #
+      # This filter removes all empty and unsaved translations from params
+      # and marks empty and saved translation for deletion.
+      def filter_empty_translations
+        model = controller_name.singularize.to_sym
+        params[model][:translations_attributes].each do |t|
+          if !(t.last.map { |_, v| v.empty? ? true : false }[2..-1]).include?(false)
+            if t.last[:id].empty?
+              params[model][:translations_attributes].delete(t.first)
+            else
+              params[model][:translations_attributes][t.first]['_destroy'] = '1'
+            end
+          end
+        end
+      end
+    end
+  end
+end

lib/active_admin/globalize3/index_table_for_extension.rb

@@ -10,6 +10,13 @@ def translation_status
           end.join(" ").html_safe
         end
       end
+      def translation_status_flags
+        column I18n.t("active_admin.globalize3.translations") do |obj|
+          obj.translated_locales.map do |l|
+            image_tag '%s.gif' % [ l.to_s ]
+          end.join(" ").html_safe
+        end
+      end
     end
   end
 end