public ActionResult PostArithmetic(NewArithmeticModel model)
{
// ** Prototype pattern. the arithmetic object which has its default values set
var arithmetic = Mapper.Map<NewArithmeticModel, Arithmetic>(model, new Arithmetic(true));
if (arithmetic.Id != 0) // existing arithmetic
{
if (ModelState.IsValid)
{
var dt = new DataTable();
arithmetic.Result = (int)dt.Compute(model.ArithmeticOperation, "");
if (!arithmetic.IsValid) // shows how custom validation would be used
{
// examine arithmetic.Errors list
}
ProViewContext.Arithmetics.Update(arithmetic);
Success = "Biểu thức " + arithmetic.ArithmeticOperation + " được cập nhật thành công.";
return RedirectToAction("Arithmetics");
}
}
else // new arithmetic
{
if (ModelState.IsValid)
{
try
{
var dt = new DataTable();
arithmetic.Result = (double)dt.Compute(model.ArithmeticOperation, "");
// ** Facade pattern. Unit of Work pattern.
ProViewContext.Arithmetics.Insert(arithmetic);
Success = "Biểu thức " + arithmetic.ArithmeticOperation + " được thêm mới thành công.";
return RedirectToAction("Arithmetics");
}
catch (Exception ex)
{
Failure = ex.Message;
}
}
}
return View(model);
}
public ActionResult GetArithmetic(int? id = null)
{
var model = new NewArithmeticModel();
if (id != null)
{
var arithmetic = ProViewContext.Arithmetics.Single(id);
model = Mapper.Map<Arithmetic, NewArithmeticModel>(arithmetic);
}
model.HttpReferer = Request.UrlReferrer.PathAndQuery;
return View("Arithmetic", model);
}
