Django 3 Web Development Cookbook - Fourth Edition

How to do it...

We will enhance the Category model using the Materialized Path algorithm, as follows:

1. Open the models.py file and update the Category model to extend treebeard.mp_tree.MP_Node instead of the standard Django model. It should also inherit from CreationModificationDateMixin, which we defined in Chapter 2, Models and Database Structure. In addition to the fields coming from the mixins, the Category model will need to have a title field:

# myproject/apps/categories/models.pyfrom django.db import modelsfrom django.utils.translation import ugettext_lazy as _from treebeard.mp_tree import MP_Nodefrom myproject.apps.core.models import CreationModificationDateBaseclass Category(MP_Node, CreationModificationDateBase): title = models.CharField(_( ...