Edit: As James pointed out, `django.views.decorators.http` already provides stuff for this. Use that instead. Old description: Should be pretty straightforward; you give it the method you can accept, it returns 405's for other methods. EG, `@method_required("POST")` at the top of your view.
Let's suppose you have a view that fetches an object and renders a template with it. def show_blog_post(request, post_id): post = Post.objects.get(pk=int(post_id)) return render_to_response("show_post.html", dict(post=post)) That's all well and good. This decorator just lets you move one statement into what is essentially a declaration at the top of the function: "this is a view, that gets passed a primary-key ID, which I want to get the Post object for." @sigtransform([Post, int]) def show_blog_post(request, post): # post is actually the Post instance now! return render_to_response("show_post.html", dict(post=post)) If you want to leave an argument alone, pass None as that positional argument (excluding `request`.) @sigtransform(None, [MyModel, str]): def show_mymodel_stuff(request, leave_me_alone, model_obj): # ...etc... Internally, this just calls get_object_or_404 with the pk kwarg, which means it's not limited to integer keys. However, Model.objects.get requires that the pk arg be of the correct type, hence why the arguments are 2-element lists or tuples: the first is the actual model, the second is what cleaner function to apply to the passed in argument.