add customization of li content rendering via block

app/helpers/spree/base_helper_decorator.rb

@@ -1,6 +1,6 @@
 Spree::BaseHelper.module_eval do
 
-  def featured_taxon_list(taxons, *args)
+  def featured_taxon_list(taxons, *args, &b)
     return '' if taxons.empty?
     opt        = args.extract_options!
     list_id    = opt.fetch(:id)    { 'featured-taxons' }
@@ -11,7 +11,7 @@ def featured_taxon_list(taxons, *args)
       taxons.map do |taxon|
         item_class = current.include?(taxon) ? 'current' : nil
         content_tag :li, :class => item_class do
-          link_to(taxon.name, seo_url(taxon))
+          block_given? ? b.call(taxon) : link_to(taxon.name, seo_url(taxon))
         end
       end.join("\n").html_safe
     end

spec/helpers/spree/base_helper_spec.rb

@@ -30,6 +30,13 @@
     it "should not give a current class for list items" do
       featured_taxon_list(taxons).should_not have_selector("li.current")
     end
+
+    it "should link to taxons" do
+      list = featured_taxon_list(taxons)
+      taxons.each do |t|
+        list.should have_selector("a[href='/t/#{t.permalink}']")
+      end
+    end
   end
 
   describe "with given options" do
@@ -50,4 +57,13 @@
         should have_selector("li.current")
     end
   end
+
+  describe "when customizing item renderer" do
+    it "should yield to given block for taxon rendering inside of li" do
+      list = featured_taxon_list(taxons) { |t| "Hello, #{t.name}" }
+      taxons.each do |t|
+        list.should have_selector("li", :text => "Hello, #{t.name}")
+      end
+    end
+  end
 end