How do I use messages with third-party views?

I've implemented a notification bar using django.contrib.messages. Now, I w开发者_StackOverflowant to make extended use of it, e.g. to display a "Welcome back" or "Logout successful" messages. However, I prefer to use builtin views for basic actions, so I use django.contrib.auth.views.logout_then_login for logging out and django.contrib.auth.views.login for logging in. Therefore, there isn't a single place where I could insert my messages.success(...), since those views are not mine.

Is there an elegant way to add those messages nevertheless without copying or overwriting views?

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Signals are your friends. See in particular the login and logout signals.