Django 3 Web Development Cookbook - Fourth Edition

How to do it...

Follow these steps to create notifications for administrators:

1. Create a signals.py file with the following content:

# myproject/apps/viral_videos/signals.pyfrom django.db.models.signals import post_savefrom django.dispatch import receiverfrom django.template.loader import render_to_stringfrom .models import ViralVideo@receiver(post_save, sender=ViralVideo)def inform_administrators(sender, **kwargs):    from django.core.mail import mail_admins    instance = kwargs["instance"]    created = kwargs["created"]    if created:        context = {"title": instance.title, "link":          instance.get_url()}        subject = render_to_string(            "viral_videos/email/administrator/subject.txt", context        )        plain_text_message = render_to_string(            "viral_videos/email/administrator/message.txt" ...