locale data as js asset

app/assets/javascripts/darkswarm/i18n.js.coffee.erb

@@ -1,3 +1,7 @@
+# Defines a global I18n object containing the language of the current locale
+<%- I18n.backend.send(:init_translations) unless I18n.backend.initialized? %>
+window.I18n = <%= I18n.backend.send(:translations)[I18n.locale].with_indifferent_access.to_json.html_safe %>
+
 # Declares the translation function t.
 # You can use t('login') in Javascript.
 window.t = (key, options = {}) ->

app/views/layouts/_i18n_translations.html.haml

@@ -1,5 +0,0 @@
-- # TODO: load json from separate file that can be cached
-%script
-  window.I18n =
-  = I18n.backend.send(:translations)[I18n.locale].with_indifferent_access.to_json.html_safe
-

app/views/layouts/darkswarm.html.haml

@@ -11,7 +11,6 @@
     %link{href: "https://fonts.googleapis.com/css?family=Roboto:400,300italic,400italic,300,700,700italic|Oswald:300,400,700", rel: "stylesheet", type: "text/css"}
 
     = yield :scripts
-    = render "layouts/i18n_translations"
     %script{src: "//maps.googleapis.com/maps/api/js?libraries=places,geometry&sensor=false"}
     = split_stylesheet_link_tag "darkswarm/all"
     = javascript_include_tag "darkswarm/all"

app/views/layouts/registration.html.haml

@@ -11,7 +11,6 @@
     %link{href: "https://fonts.googleapis.com/css?family=Roboto:400,300italic,400italic,300,700,700italic|Oswald:300,400,700", rel: "stylesheet", type: "text/css"}
 
     = yield :scripts
-    = render "layouts/i18n_translations"
     %script{src: "//maps.googleapis.com/maps/api/js?libraries=places&sensor=false"}
     = stylesheet_link_tag "darkswarm/all"
     = javascript_include_tag "darkswarm/all"