I\'ve a settings page where users can select if they want to receive a newsletter or not.
I want a checkbox for this, and I want that Django select it if \'newsletter\'
You use a CheckBoxInput widget on your form:
https://docs.djangoproject.com/en/dev/ref/forms/widgets/#django.forms.CheckboxInput
If you're directly using ModelForms, you just want to use a BooleanField in your model.
https://docs.djangoproject.com/en/stable/ref/models/fields/#booleanfield