public async Task <LearningResource> Update(LearningResource learningResource)
{
_context.Entry(learningResource).State = EntityState.Modified;
await _context.SaveChangesAsync();
return(learningResource);
}
public async Task <IActionResult> Create([Bind("RentedBookID,StudentID,BookID,RentDate,ReturnDate")] RentedBook rentedBook)
{
Book book = _context.Books.Find(rentedBook.BookID);
var checkBook = _context.RentedBooks
.Include(r => r.Book)
.Include(r => r.Student).ToList();
// if there are more than 1, book will be issued
if (book.AvailableQuantity >= 1)
{
book.AvailableQuantity -= 1;
_context.Entry(book).State = EntityState.Modified;
if (ModelState.IsValid)
{
_context.Add(rentedBook);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
}
// if none, give a message telling user that the book is current unavailable
else
{
ModelState.AddModelError(string.Empty,
"The book is unavailable! It is rented by other students.");
}
ViewData["BookID"] = new SelectList(_context.Books, "BookID", "BookID", rentedBook.BookID);
ViewData["StudentID"] = new SelectList(_context.Students, "StudentID", "StudentID", rentedBook.StudentID);
return(View(rentedBook));
}
public async Task <CinematicItem> Update(CinematicItem cinematicItem)
{
_context.Entry(cinematicItem).State = EntityState.Modified;
await _context.SaveChangesAsync();
return(cinematicItem);
}
public async Task <ResourceList> Update(ResourceList resourceList)
{
_context.Entry(resourceList).State = EntityState.Modified;
await _context.SaveChangesAsync();
return(resourceList);
}
public void Update(T entity)
{
_context.Entry(entity).State =
EntityState.Modified;
Save();
}