Using haml for express views

gistfile1.js

var haml = require('haml');

/*
 * Register .haml so that markdown complies with express view system by
 * implementing a compile method
 */
app.register('.haml', {
  compile: function(str, options) {
    return function(locals) {
      return haml.render(str, {locals: locals});
    }
  }
});