As long as you either
a) include the rendering module as shown here for Padrino 0.9.26 (which simply makes the render method more powerful)
Note that b only works after changes I just made in Padrino so you must work off git because in edge padrino, I also added another way to get partials working without the need for augmenting rendering:
Option A works with stable gem Padrino. By adding rendering module you can also do things like this:
render 'foo' # rather than erb :foo
without an engine and Sinatra will autodetect that for you along with smarter rendering overall.