public async Task <IActionResult> Edit(ImageEditVM viewModel)
{
if (!ModelState.IsValid)
{
return(View(viewModel));
}
await service.UpdateImage(viewModel);
return(RedirectToAction(nameof(GalleryController.Index), Gallery));
}
public async Task UpdateImage(ImageEditVM viewModel)
{
Image image = context.Image.Include(o => o.TagToImage).Single(o => o.Id == viewModel.ImageId);
image.Title = viewModel.Title;
image.GalleryId = viewModel.GalleryId;
if (!string.IsNullOrWhiteSpace(viewModel.Tags))
{
var tags = await context.Tag.ToListAsync();
foreach (var tag in viewModel.Tags.Split(","))
{
var tagName = tag.Trim();
var tagToBeInserted = tags.SingleOrDefault(t => t.Name == tagName);
var tagToImage = new TagToImage();
if (tagToBeInserted == null)
{
tagToImage.Tag = new Tag {
Name = tagName
};
tagToImage.Image = image;
image.TagToImage.Add(tagToImage);
}
else
{
if (image.TagToImage.Count(o => o.ImageId == image.Id && o.TagId == tagToBeInserted.Id) == 0)
{
tagToImage.Tag = tagToBeInserted;
tagToImage.Image = image;
image.TagToImage.Add(tagToImage);
}
tags.Remove(tagToBeInserted);
}
}
var tagsToRemove = tags.Where(o => o.TagToImage.Any(t => t.ImageId == image.Id)).SelectMany(a => a.TagToImage);
if (tagsToRemove != null)
{
context.TagToImage.RemoveRange(tagsToRemove);
}
}
await context.SaveChangesAsync();
await RemoveUnusedTags();
}
public async Task <IActionResult> Edit(int id)
{
var image = await service.GetSingleImage(id);
var tags = await service.GetTagsForImage(id);
ImageEditVM viewModel = new ImageEditVM
{
Title = image.Title,
ImageId = image.Id,
GalleryId = image.GalleryId,
ImageUrl = image.Url,
Tags = string.Join(", ", tags.Select(t => t.Name)),
Galleries = service.GetAllGalleries(),
};
return(View(viewModel));
}