How to Raise a 404 Page Not Found Error in Django

In this article, we go over how to raise a 404 Page Not Found Error in Django.

There are certain instances where you would want to raise a 404 Page Not Found Error in Django.

This could possibly be when a user tries to access a database object that doesn't exist. Or anything of that sort.

Django has a built-in function that allows us to raise a 404 error.

So from django.http, you have import Http404.

Then after this, in your code, you have to put in the line, raise Http404

So, we'll see demonstrate below how this works in code.

from django.http import HttpResponse, Http404 def showview(request): if request.user.is_authenticated(): return HttpResponse("<h1>Hello</h1>") else: raise Http404

So in this code, we have to import Http404, as well HttpResponse because we're importing that as well.

We then have our function, showview().

In this function, we use the line, request.user.is_authenticated() to see whether a user is logged in or not. If, so we return the page, "Hello". If not (if a user is not logged in), we return a 404 Page Not Found Error.

So, again, all you have to do is import Http404 from django.http

Then, you just have to use the line, Http404

And this creates a 404 Page Not Found Error.

So this is all that is required in Django to create a 404 Page Not Found Error.

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