public HttpResponseMessage Patch(PatchModel<Todo> todoPatch)
{
// You first have to fetch the model from the database.
// DbContext makes partial database updates trivial !
// But you always first need to fetch the data from the database...
Todo updateModel = _db.Todoes.Find( todoPatch.GetKeys(_db));
// now you can apply the received updates on our fetched model
todoPatch.UpdateModel(updateModel);
// and save the changes
_db.SaveChanges();
// http status code 204 marks the request as excecuted
return new HttpResponseMessage<Todo>(HttpStatusCode.NoContent);
}
