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return BadRequest("Could not add item.");
}
return RedirectToAction("Index");
}
[ValidateAntiForgeryToken]
public async Task<IActionResult> MarkDone(Guid id)
{
if (id == Guid.Empty)
{
return RedirectToAction("Index");
}
var currentUser = await _userManager.GetUserAsync(User);
if (currentUser == null) return Challenge();
var successful = await _todoItemService
.MarkDoneAsync(id, currentUser);
if (!successful)
{
return BadRequest("Could not mark item as done.");
}
return RedirectToAction("Index");
83
Using identity in the application
}
Both service methods must now accept an ApplicationUser parameter.
Update the interface definition in ITodoItemService :
Task<bool> AddItemAsync(TodoItem newItem, ApplicationUser user);
Task<bool> MarkDoneAsync(Guid id, ApplicationUser user);
And finally, update the service method implementations in the
TodoItemService . In AddItemAsync method, set the UserId property
when you construct a new TodoItem :
public async Task<bool> AddItemAsync(
TodoItem newItem, ApplicationUser user)
{
newItem.Id = Guid.NewGuid();
newItem.IsDone = false;
newItem.DueAt = DateTimeOffset.Now.AddDays(3);
newItem.UserId = user.Id;
// ...
}
The Where clause in the MarkDoneAsync method also needs to check for
the user's ID, so a rogue user can't complete someone else's items by
guessing their IDs:
public async Task<bool> MarkDoneAsync(
Guid id, ApplicationUser user)
{
var item = await _context.Items
.Where(x => x.Id == id && x.UserId == user.Id)
.SingleOrDefaultAsync();
// ...
}