public IActionResult Edit(int? id, EditCategoryViewModel viewModel)
{
if (id == null)
return new NotFoundResult();
var ordinals = new Dictionary<int, int>();
var isBig = new Dictionary<int, bool>();
int index = 0;
foreach (var pictureId in viewModel.GetPictureIds())
{
isBig[pictureId] = viewModel.GetPictureIsBigs()[index];
ordinals[pictureId] = index++;
}
foreach (var picture in _context.Categories
.Include(c => c.Pictures)
.Single(c => c.Id == id)
.Pictures)
picture.CategoryId = null;
foreach (var picture in _context.Pictures
.Where(p => viewModel.GetPictureIds().Contains(p.Id)))
{
picture.CategoryId = id;
picture.Ordinal = ordinals[picture.Id];
picture.IsFriendly = isBig[picture.Id];
}
var category = _context.Categories.Single(c => c.Id == id);
category.Name = viewModel.Name;
category.Caption = viewModel.Caption;
category.ThumbnailId = viewModel.ThumbnailId;
category.ParentCategoryId = viewModel.SelectedParentCategory;
_context.SaveChanges();
return RedirectToAction("Edit");
}
public IActionResult Edit(int? id)
{
if (id == null)
return new NotFoundResult();
var category = _context.Categories
.Single(c => c.Id == id);
category.Pictures = _context.Pictures
.Where(p => p.CategoryId == category.Id)
.OrderBy(p => p.Ordinal)
.ToList();
var model = new EditCategoryViewModel()
{
Name = category.Name,
Caption = category.Caption,
ThumbnailId = category.ThumbnailId,
Pictures = category.Pictures.ToList(),
Categories = _context.Categories.Select(c => new SelectListItem { Text = c.Name, Value = c.Id.ToString() }).ToList(),
SelectedParentCategory = category.ParentCategoryId.GetValueOrDefault()
};
var thumbnails = _context.Categories.Select(c => c.Thumbnail).ToList();
model.UnsortedPictures = _context.Pictures
.Where(p => p.CategoryId == null)
.Where(p => !thumbnails.Contains(p))
.ToList();
if (model.ThumbnailId != null)
model.ThumbnailUrl = _context.Pictures
.SingleOrDefault(p => p.Id == model.ThumbnailId)?.Filename;
return View(model);
}