Source: 📖 Test Driven Development with Python ch13 p233

Defining get_absolute_url for a Django model

You can define a special model method in Django called get_absolute_url to get the URL of the page that displays the instance of the model it is called on. Assume we have the following model:

# models.py

...

class Item(models.Model):
	
	...
	
	def get_absolute_url(self):
		return reverse('view_item', args=[self.id])

This finds the URL associated with the name 'view_item' and combines it with the ID (or pk) of the item it is called on. The method is implicitly called on an object which is passed to redirect() as an argument:

# views.py

def some_view(request):
	item = Item.objects.create()
	return redirect(item)