public async Task <IActionResult> Create(BookViewModels bookViewModels)
{
if (!ModelState.IsValid)
{
_logger.LogError($"Create book model is invalid. Model: {bookViewModels}");
return(RedirectToAction(nameof(Index)));
}
try
{
var fileName = await ProcessBookCoverImage(bookViewModels);
var bookEntity = new Book
{
UserName = GetUserEmail(),
CreateTime = DateTime.Now,
UpdateTime = DateTime.Now,
Description = bookViewModels.Description,
Name = bookViewModels.Name,
Quantity = bookViewModels.Quantity,
Image = fileName
};
_context.Add(bookEntity);
await _context.SaveChangesAsync();
}
catch (Exception ex)
{
_logger.LogError(ex, "Create book errors.");
}
return(RedirectToAction(nameof(Index)));
}
public IViewComponentResult Invoke()
{
var items = new BookViewModels();
if (!_cache.TryGetValue("top5download", out items))
{
if (items == null)
{
var books = _bookRepository.Top5Download.Where(x => x.Status).ToList();
items = new BookViewModels
{
Books = books
};
}
var cacheEntryOptions = new MemoryCacheEntryOptions()
.SetSlidingExpiration(TimeSpan.FromMinutes(3));
_cache.Set("top5download", items, cacheEntryOptions);
}
return(View(items));
}
private async Task <string> ProcessBookCoverImage(BookViewModels bookViewModels)
{
if (null == bookViewModels.Files)
{
return(string.Empty);
}
else
{
var filePath = _env.WebRootPath + BookImagePath;
var fileName = Guid.NewGuid() + Path.GetExtension(bookViewModels.Files.FileName);
if (bookViewModels.Files.Length > 0)
{
using (var stream = new FileStream(filePath + fileName, FileMode.Create))
{
await bookViewModels.Files.CopyToAsync(stream);
}
}
return(fileName);
}
}
