public async Task <ActionResult> Create(CategoryViewModel model)
{
if (ModelState.IsValid)
{
if (BooksAdded != null)
{
model.Books = BooksAdded;
}
else
{
model.Books = new List <BookViewModel>();
}
using (DbContextTransaction dbTran = db.Database.BeginTransaction())
{
try
{
Category category = new Category();
category.CategoryName = model.Name;
db.Categories.Add(category);
if (BooksAdded != null)
{
foreach (var book in BooksAdded)
{
Book b = await db.Books.FindAsync(book.Id);
category.Books.Add(b);
}
}
await db.SaveChangesAsync();
dbTran.Commit();
BooksAdded = null;
return(RedirectToAction("Index"));
}
catch (DbUpdateException dbEx)
{
SqlException sqlEx = dbEx.GetBaseException() as SqlException;
if (sqlEx.Errors[0].Number == 2601)
{
TempData["ErrorMessage"] = "Duplicated code";
}
else
{
TempData["ErrorMessage"] = sqlEx.Errors[0].Message;
}
dbTran.Rollback();
List <BookViewModel> pendingBooks = await GetPendingBooks();
ViewBag.BookId = new SelectList(pendingBooks, "Id", "Title");
return(View(model));
}
}
}
return(View(model));
}
public async Task <ActionResult> Create([Bind(Include = "AuthorId,AuthorName,Nacionality")] Author author)
{
if (ModelState.IsValid)
{
db.Authors.Add(author);
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}
return(View(author));
}
public async Task <ActionResult> Edit(BookViewModel model)
{
if (ModelState.IsValid)
{
try
{
Book book = await db.Books.FindAsync(model.Id);
book.Title = model.Title;
book.AuthorId = model.AuthorId;
book.Price = model.Price;
book.Editorial = model.Editorial;
db.Entry(book).State = EntityState.Modified;
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}
catch (DbUpdateException dbEx)
{
SqlException sqlEx = dbEx.GetBaseException() as SqlException;
if (sqlEx.Errors[0].Number == 2601)
{
TempData["ErrorMessage"] = "Duplicated code";
}
else
{
TempData["ErrorMessage"] = sqlEx.Errors[0].Message;
}
ViewBag.AuthorId = new SelectList(db.Authors, "AuthorId", "AuthorName", model.AuthorId);
return(View(model));
}
}
ViewBag.AuthorId = new SelectList(db.Authors, "AuthorId", "AuthorName", model.AuthorId);
return(View(model));
}