Improve JS i18n

backend/app/assets/javascripts/spree/backend.js

@@ -12,6 +12,7 @@
 //= require solidus_admin/bootstrap
 //= require prism
 //= require spree
+//= require spree/backend/translation
 //= require spree/backend/backbone-overrides
 //= require spree/backend/spree-select2
 //

backend/app/assets/javascripts/spree/backend/handlebars_extensions.coffee

@@ -1,19 +1,11 @@
 #= require handlebars
+#= require spree/backend/translation
 
-# Resolves string keys with dots in a deeply nested object
-# http://stackoverflow.com/a/22129960/4405214
-resolveObject = (path, obj) ->
-  path.split('.').reduce ((prev, curr) ->
-    if prev then prev[curr] else undefined
-  ), obj || self
+Handlebars.registerHelper "t", (key, options) ->
+  Spree.t(key, options.hash)
 
-
-Handlebars.registerHelper "t", (key) ->
-  translation = resolveObject key, Spree.translations
-  return translation if translation
-
-  console.error "No translation found for #{key}."
-  key
+Handlebars.registerHelper "human_attribute_name", (model, attr) ->
+  Spree.human_attribute_name(model, attr)
 
 Handlebars.registerHelper "admin_url", ->
   Spree.pathFor("admin")

backend/app/assets/javascripts/spree/backend/translation.js

@@ -0,0 +1,29 @@
+(function() {
+  // Resolves string keys with dots in a deeply nested object
+  // http://stackoverflow.com/a/22129960/4405214
+  var resolveObject = function(path, obj) {
+    return path
+      .split('.')
+      .reduce(function(prev, curr) {
+        return prev && prev[curr];
+      }, obj || self);
+  }
+
+  Spree.t = function(key, options) {
+    options = (options || {});
+    if(options.scope) {
+      key = options.scope + "." + key;
+    }
+    var translation = resolveObject(key, Spree.translations);
+    if (translation) {
+      return translation;
+    } else {
+      console.warn("No translation found for " + key + ".");
+      return key;
+    }
+  }
+
+  Spree.human_attribute_name = function(model, attr) {
+    return Spree.t("activerecord.attributes." + model + '.' + attr);
+  }
+})();

backend/app/views/spree/admin/shared/_translations.html.erb

@@ -18,6 +18,7 @@
     :item_stock_placeholder   => Spree.t(:choose_location),
     :month_names              => I18n.t(:month_names, :scope => :date).reject(&:blank?),
     :currency_separator       => I18n.t('number.currency.format.separator'),
+    :activerecord             => I18n.t('activerecord')
   }).to_json
 %>
 </script>