Transparently intercept requests for templates that are known to rails and rewrite the URL

gistfile1.js

angular.module('templates', []).config(['$httpProvider', function($httpProvider) {
  /* Injector to rewrite template filenames like template.html to
     rails asset paths like /assets/template-0def1e14f3772cda8a0110f73fb6beb1.html */
  $httpProvider.interceptors.push(['$cacheFactory', '$sce', function($cacheFactory, $sce) {
    var cache = $cacheFactory('templatesMap');
    /* Rails derives this list automatically */
    // <% Dir.glob(Rails.root.join('app','assets','templates', '*.html')).each do |f| file = File.basename(f) %>
    cache.put('<%= file %>', '<%= asset_path file %>');
    // <% end %>
    return {
      request: function(config) {
        var templateUrl = cache.get(config.url);
        if(templateUrl) {
          config.url = $sce.getTrustedResourceUrl(templateUrl);
        }
        return config;
      }
    };
  }]);
}]);

Tested in Angular 1.2.0rc1