bigjason

import play.api.libs.json._
import play.api.libs.functional.syntax._
import play.api.data.validation.ValidationError

implicit class JsPathPimps(path: JsPath) extends JsPath {
  def readOrError[T](error: => String)(implicit r: Reads[T]): Reads[T] = new Reads[T] {
    def reads(json: JsValue): JsResult[T] = path.readNullable(r).reads(json) match {
      case JsSuccess(Some(value), _) => JsSuccess(value, path)
      case JsSuccess(None, _)        => JsError((path, ValidationError(error)))
      case err@JsError(_)            => err

thomseddon

app.filter('bytes', function() {
	return function(bytes, precision) {
		if (isNaN(parseFloat(bytes)) || !isFinite(bytes)) return '-';
		if (typeof precision === 'undefined') precision = 1;
		var units = ['bytes', 'kB', 'MB', 'GB', 'TB', 'PB'],
			number = Math.floor(Math.log(bytes) / Math.log(1024));
		return (bytes / Math.pow(1024, Math.floor(number))).toFixed(precision) +  ' ' + units[number];
	}
});