// POST api/Todo
public HttpResponseMessage PostTodoItem(TodoItemDto todoItemDto)
{
if (ModelState.IsValid)
{
TodoList todoList = db.TodoLists.Find(todoItemDto.TodoListId);
if (todoList == null)
{
return Request.CreateResponse(HttpStatusCode.NotFound);
}
if (todoList.UserId != User.Identity.Name)
{
// Trying to add a record that does not belong to the user
return Request.CreateResponse(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("DefaultApi", new { id = todoItemDto.TodoItemId }));
return response;
}
else
{
return Request.CreateResponse(HttpStatusCode.BadRequest);
}
}
// PUT api/Todo/5
public HttpResponseMessage PutTodoItem(TodoItemDto todoItemDto)
{
if (ModelState.IsValid)
{
TodoItem todoItem = todoItemDto.ToEntity();
TodoList todoList = db.TodoLists.Find(todoItem.TodoListId);
if (todoList == null)
{
return Request.CreateResponse(HttpStatusCode.NotFound);
}
if (todoList.UserId != User.Identity.Name)
{
// Trying to modify a record that does not belong to the user
return Request.CreateResponse(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 Request.CreateResponse(HttpStatusCode.InternalServerError);
}
return Request.CreateResponse(HttpStatusCode.OK);
}
else
{
return Request.CreateResponse(HttpStatusCode.BadRequest);
}
}