Django Warn on Refresh and Leaving Page with JS Django.How

Redirect (will prevent resubmitting the form)

from django.shortcuts import redirect
return redirect(f'/customer/{pk}')

WAY 1: Prevent by passing paraments

base.html

    {% if warn_before_leaving_page %}
        
    {% endif %}


    {% if warn_before_leaving_page_or_refresh %}
        
    {% endif %}

views.py

    context = {
        'warn_before_leaving_page': True,
        'warn_before_leaving_page_or_refresh ': True,
    }