Pass errors in Django using HttpResponseRedirect

I know that HttpResponseRedirect only takes one parameter, a URL. But there are cases when I want to redirect with an error message to display.

I was reading this post: How to pass information using an HTTP redirect (in Django) and there were a lot of good suggestions. I don't really want to use a library that I don't know how works. I don't want to rely on messages which, according to the Django docs, is going to be removed. I thought about using sessions. I also like the idea of passing it in a URL, something like:

return HttpResponseRedirect('/someurl/?error=1')

and then having some map from error code to message. Is it good practice to have a global map-like structure which hard codes in these error messages or is there a better way?

Or should I just use a session

EDIT: I got it working using a sessio开发者_StackOverflow中文版n. Is that a good practice to put things like this in the session?

You are right about the auth messages. They are deprecated but as the docs suggest you should use the django messages framework instead, which I think is the exact soultion for your case.