Django: Web Development with Python

Using a single selection field to choose a category in forms

What happens if you want to show category selection in a form? How will the hierarchy be presented? In django-mptt, there is a special TreeNodeChoiceField form field that you can use to show the hierarchical structures in a selected field. Let's take a look at how to do this.

Getting ready

We will start with the movies app that we defined in the previous recipes.

How to do it...

Let's create a form with the category field and then show it in a view:

1. In the forms.py file of the app, create a form with a category field as follows:

   # movies/forms.py # -*- coding: UTF-8 -*- from __future__ import unicode_literals from django import forms from django.utils.translation import ugettext_lazy as _ ...