public ActionResult RegistrarCompostEntradaView(Entity.Entrada entrada)
 {
     Models.CompostEntradaModel db = new Models.CompostEntradaModel();
     entrada.Fecha = System.DateTime.Now;
     entrada.Medida = "g";
     if (db.crearCompostEntrada(entrada))
     {
         TempData["success"] = "true";
         return RedirectToAction("RegistrarCompostEntradaView");
     }
     else
     {
         TempData["error"] = "false";
     }//end if-else
     return View();
 }//endo method