Django - Getting last object created, simultaneous filters

Question

Apologies, I am completely new to Django and Python.

I have 2 questions. First, how would I go about getting the last object created (or highest pk) in a list of obj

Answer 1

I am working on Django version is 1.4.22, neither last nor lastet is working. My way to solve with minimum db loading is like:

latest = lambda model_objects, field : model_objects.values_list( field, flat = True ).order_by( "-" + field )[ 0 ]
latest_pk = latest( List.objects, "pk" )

This function accepts query_set as input.

You may bind this function dynamically by doing:

import types
List.objects.latest = types.MethodType( latest, List.objects )

Then you should be able to get the last object by this latest pk easily.