public async Task <IActionResult> Edit(int id, ItemModel item)
{
// Check if logged in user is still in the system, if not then sign user out and return to homepage
if (!await _applicationUser.UserExistsById(User.FindFirst(ClaimTypes.NameIdentifier).Value))
{
await _signInManager.SignOutAsync();
return(RedirectToAction("Index", "Home", new { area = "" }));
}
if (id != item.Id)
{
return(NotFound());
}
if (ModelState.IsValid)
{
// This all should probably be in the Service logic class, not doing it right now because can't find a way to return NotFound() 404 from the Service class.
// Try and Catch for database concurrency, what if someone else was already editing and saved changes, we would just overwrite his changes
// doing this to prevent that
// Might not actually work if we don't throw concurrency exception by ourselves.
try {
ICollection <ItemImage> ItemImages = new List <ItemImage>();
List <int> ItemImagesToRemoveIds = new List <int>();
// Check if user has chosen to remove all the images
if (item.Images != null && item.Images.Any())
{
// Since we are using ItemModel which doesn't know about the Image list that every item has,
// we'll add them to an Image list and after create the Item to be inserted to the database
foreach (var modelImage in item.Images)
{
ItemImages.Add(new ItemImage {
Id = modelImage.Id,
ImageFileName = modelImage.ImageFileName
});
// Check if user selected the image to be removed
if (modelImage.RemoveImage)
{
ItemImagesToRemoveIds.Add(modelImage.Id);
}
}
}
// Create Item for database insertion from the ItemEditModel class
Item EditedItem = new Item {
Id = item.Id,
Name = item.Name,
Description = item.Description,
Images = ItemImages,
Price = item.Price
};
// Check if new added images are the right type.
if (item.ImagesToAdd != null && item.ImagesToAdd.Any())
{
foreach (var img in item.ImagesToAdd)
{
if (!img.ContentType.Contains("image"))
{
return(StatusCode(StatusCodes.Status415UnsupportedMediaType));
}
}
}
await _leiunurk.EditItem(EditedItem, ItemImagesToRemoveIds, item.ImagesToAdd, imgUploadPath);
StatusMessage = "The Item has been edited!";
}
catch (DbUpdateConcurrencyException) {
if (!(await _leiunurk.ItemExists(item.Id)))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
// show form again if model not valid
return(View(item));
}
