public ActionResult Create(BorrowCreateViewModel model)
{
if (model.ChoosenBooks.Contains(-1))
{
ModelState.AddModelError("emptyBook", "Each list must have a book selected");
}
if (model.ChoosenBooks.Length != model.ChoosenBooks.Distinct().Count())
{
ModelState.AddModelError("haveDuplicate", "It isn't possible to borrow two identical books.");
}
if (!ModelState.IsValid)
{
var errorList = (from item in ModelState
where item.Value.Errors.Any()
select item.Value.Errors[0].ErrorMessage).ToList();
return(Json(new { success = false, errors = errorList }, JsonRequestBehavior.AllowGet));
}
borrowService.InsertBorrows(model);
return(Json(new { success = true }, JsonRequestBehavior.AllowGet));
}
public void InsertBorrows(BorrowCreateViewModel model)
{
var newBorrows = new List <Borrow>();
foreach (var book in model.ChoosenBooks)
{
newBorrows.Add(new Borrow
{
UserId = model.UserId,
BookId = book,
FromDate = DateTime.Now,
ToDate = model.ToDate,
IsReturned = false
});
}
libraryEntities.Borrows.AddRange(newBorrows);
libraryEntities.SaveChanges();
var books = libraryEntities.Books.Where(x => model.ChoosenBooks.Contains(x.BookId)).ToList();
books.ForEach(x => x.Count = x.Count - 1);
libraryEntities.SaveChanges();
}
