if err := c.Db.Preload("Creator").Preload("Executor").Where("id= ?", id).Find(&testplan); err.Error != nil {
        log.Error("TestPlan", "type", "database", "msg", err.Error)
        return errors.HttpError{Status: http.StatusInternalServerError, Desc: "An error while select operation in TestPlans.PlanView"}
    }