public IHttpActionResult PostTodoItem(TodoItemViewModel todoItemDto)
{
if (!ModelState.IsValid)
{
return Message(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState));
}
TodoList todoList = db.TodoLists.Find(todoItemDto.TodoListId);
if (todoList == null)
{
return StatusCode(HttpStatusCode.NotFound);
}
if (!String.Equals(todoList.UserId, User.Identity.GetUserId(), StringComparison.OrdinalIgnoreCase))
{
// Trying to add a record that does not belong to the user
return StatusCode(HttpStatusCode.Unauthorized);
}
TodoItem todoItem = todoItemDto.ToEntity();
// Need to detach to avoid loop reference exception during JSON serialization
db.Entry(todoList).State = EntityState.Detached;
db.TodoItems.Add(todoItem);
db.SaveChanges();
todoItemDto.TodoItemId = todoItem.TodoItemId;
HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, todoItemDto);
response.Headers.Location = new Uri(Url.Link("TodoItem", new { id = todoItemDto.TodoItemId }));
return Message(response);
}
public IHttpActionResult DeleteTodoItem(int id)
{
TodoItem todoItem = db.TodoItems.Find(id);
if (todoItem == null)
{
return StatusCode(HttpStatusCode.NotFound);
}
if (!String.Equals(db.Entry(todoItem.TodoList).Entity.UserId, User.Identity.GetUserId(), StringComparison.OrdinalIgnoreCase))
{
// Trying to delete a record that does not belong to the user
return StatusCode(HttpStatusCode.Unauthorized);
}
TodoItemViewModel todoItemDto = new TodoItemViewModel(todoItem);
db.TodoItems.Remove(todoItem);
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
return StatusCode(HttpStatusCode.InternalServerError);
}
return Content(HttpStatusCode.OK, todoItemDto);
}
public IHttpActionResult PutTodoItem(int id, TodoItemViewModel todoItemDto)
{
if (!ModelState.IsValid)
{
return Message(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState));
}
if (id != todoItemDto.TodoItemId)
{
return StatusCode(HttpStatusCode.BadRequest);
}
TodoItem todoItem = todoItemDto.ToEntity();
TodoList todoList = db.TodoLists.Find(todoItem.TodoListId);
if (todoList == null)
{
return StatusCode(HttpStatusCode.NotFound);
}
if (!String.Equals(todoList.UserId, User.Identity.GetUserId(), StringComparison.OrdinalIgnoreCase))
{
// Trying to modify a record that does not belong to the user
return StatusCode(HttpStatusCode.Unauthorized);
}
// Need to detach to avoid duplicate primary key exception when SaveChanges is called
db.Entry(todoList).State = EntityState.Detached;
db.Entry(todoItem).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
return StatusCode(HttpStatusCode.InternalServerError);
}
return StatusCode(HttpStatusCode.OK);
}
