Django raising 404 with a message

Question

I like to raise 404 with some error message at different places in the script eg: Http404(\"some error msg: %s\" %msg) So, in my urls.py I included:

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Answer 1

Raise an Http404 exception inside a view. It's usually done when you catch a DoesNotExist exception. For example:

from django.http import Http404

def article_view(request, slug):
    try:
        entry = Article.objects.get(slug=slug)
    except Article.DoesNotExist:
        raise Http404()
    return render(request, 'news/article.html', {'article': entry, })

Even better, use get_object_or_404 shortcut:

from django.shortcuts import get_object_or_404

def article_view(request):
    article = get_object_or_404(MyModel, pk=1)
    return render(request, 'news/article.html', {'article': entry, })

If you'd like to customize the default 404 Page not found response, put your own template called 404.html to the templates folder.