public ActionResult Update([DataSourceRequest]DataSourceRequest request, ManufacturerViewModel model)
{
if (model != null && ModelState.IsValid)
{
var manufacturerToUpdate = this.Data.Manufacturers.GetById(model.Id);
if (manufacturerToUpdate == null)
{
ModelState.AddModelError(
"alert",
"An unexpected error has occurred. The manufacturer you want to update was not found...");
return Json(ModelState.ToDataSourceResult());
}
var manufacturerNameLowerCase = model.Name.Trim().ToLower();
if (manufacturerToUpdate.Name.ToLower() != manufacturerNameLowerCase)
{
if (this.Data.Manufacturers.All().Any(m => m.Name.ToLower() == manufacturerNameLowerCase))
{
ModelState.AddModelError("Name", "There's already a manufacturer with this name!");
}
else
{
manufacturerToUpdate.Name = model.Name.Trim();
this.Data.SaveChanges();
}
}
if (ModelState.IsValid)
{
return Json(new object());
}
}
return Json(ModelState.ToDataSourceResult());
}
public ActionResult Create([DataSourceRequest]DataSourceRequest request, ManufacturerViewModel model)
{
var results = new List<ManufacturerViewModel>();
if (model != null && ModelState.IsValid)
{
var manufacturerNameLowerCase = model.Name.Trim().ToLower();
if (this.Data.Manufacturers.All().Any(m => m.Name.ToLower() == manufacturerNameLowerCase))
{
ModelState.AddModelError("Name", "There's already a manufacturer with this name!");
return Json(ModelState.ToDataSourceResult());
}
var newManufacturer = new Manufacturer() { Name = model.Name.Trim() };
this.Data.Manufacturers.Add(newManufacturer);
this.Data.SaveChanges();
model.Id = newManufacturer.Id;
results.Add(model);
}
return Json(results.ToDataSourceResult(request));
}
public ActionResult Destroy([DataSourceRequest]DataSourceRequest request, ManufacturerViewModel model)
{
if (model != null && ModelState.IsValid)
{
var manufacturerToDelete = this.Data.Manufacturers.GetById(model.Id);
if (manufacturerToDelete == null)
{
ModelState.AddModelError(
"alert",
"An unexpected error has occurred. The manufacturer you want to delet was not found...");
return Json(ModelState.ToDataSourceResult());
}
foreach (var laptop in manufacturerToDelete.Laptops.ToList())
{
foreach (var vote in laptop.Votes.ToList())
{
this.Data.Votes.Delete(vote);
}
foreach (var comment in laptop.Comments.ToList())
{
this.Data.Comments.Delete(comment);
}
this.Data.Laptops.Delete(laptop);
}
this.Data.Manufacturers.Delete(manufacturerToDelete);
this.Data.SaveChanges();
}
return Json(new object());
}