public IResult CheckReturnDate(int rentalsId)
{
var result = _rentalsDal.GetCarRentalDetails(r => r.RentalsId == rentalsId && r.ReturnDate == null);
if (result.RentalsId > 0)
{
return(new ErrorResult(Messages.RentalsAddedError));
}
return(new SuccessResult(Messages.RentalsAdded));
}