Merge pull request #30 from dalthon/master

Loads helpers written in pure javascript files

lib/handlebars/context.rb

@@ -14,6 +14,14 @@ def compile(*args)
       ::Handlebars::Template.new(self, handlebars.compile(*args))
     end
 
+    def load_helpers(helpers_pattern)
+      Dir[helpers_pattern].each{ |path| load_helper(path) }
+    end
+
+    def load_helper(path)
+      @js.load(path)
+    end
+
     def precompile(*args)
       handlebars.precompile(*args)
     end

spec/handlebars_spec.rb

@@ -23,6 +23,17 @@
     end
   end
 
+  describe "loading Helpers" do
+    before do
+      subject.load_helper('spec/sample_helper.js')
+    end
+
+    it "can call helpers defined in a javascript file" do
+      t = compile('{{#nthTimes 2}}yep {{/nthTimes}}hurrah!')
+      t.call.should eql 'yep yep hurrah!'
+    end
+  end
+
   describe "registering Helpers" do
     before do
       subject.register_helper('alsowith') do |this, context, block|

spec/sample_helper.js

@@ -0,0 +1,9 @@
+Handlebars.registerHelper("nthTimes", function(n, options){
+  var buffer = "";
+
+  for(var i = 0; i < n; i++) {
+    buffer += options.fn();
+  }
+
+  return buffer;
+});