DATABASES = {
    'default': {
        'ENGINE': 'djongo',
        'NAME': 'db_name',
    }
}

from django.views.generic import TemplateView
from .models import Part, Books

class Index(TemplateView):
    template_name = "base.html"

    def get_context_data(self, *args, **kwargs):
        context = super().get_context_data(*args, **kwargs)
        context['books_list'] = Books.objects.all()
        context['len'] = len(Books.objects.all())
        return context

from djongo import models

class Part(models.Model):
    name = models.CharField(max_length=12)

class Books(models.Model):
    name = models.CharField(max_length=18)
    part_id = models.ForeignKey(Part, on_delete=models.CASCADE)

{% for li in books_list%}
<a href="">{{ li.name }}</a>