code: function(data) {
  		if( typeof data == "string" ) {
  			var transformed = {};
  			$.each(data.split(/\s/), function() {
  				transformed[this] = true;
  			});
  			data = transformed;
  		}
  		return data;
  	}
docs: Converts a simple string to a {string: true} rule, e.g., "required" to {required:true}