Misago apps define plenty of decorators for you to wrap your views with.
misago.core.decorators.require_POSTFunction that checks if request made to access view is POST. If it's not, decorator renders wrong_way.html template and returns it in 405 response. This is its only difference to Django's counterpart.
misago.core.errorpages.shared_403_exception_handlerIf your project has different error handler for 403 errors defined, you can use this decorator to make your function shared handler between Misago and other views. This will make Misago handle 403 exceptions coming from under its path while leaving alone exceptions coming from your site.
misago.core.errorpages.shared_404_exception_handlerSame as above but for custom 404 error handler.
misago.users.decorators.deny_authenticatedThis decorator will block requests made to view if user is authenticated, displaying page with error message or returning JSON/XML in its stead.
misago.users.decorators.deny_guestsThis decorator will block requests made to view if user is not authenticated, displaying page with error message or returning JSON/XML in its stead.
misago.users.decorators.deny_banned_ipsThis decorator will block requests made to view if user IP is banned, displaying page with error message or returning JSON/XML in its stead.
misago.users.decorators.deflect_authenticatedThis decorator will return redirect to forum index if user is authenticated.
misago.users.decorators.deflect_guestsThis decorator will return redirect to forum index if user is not authenticated.
misago.users.decorators.deflect_banned_ipsThis decorator will return redirect to forum index if user IP is banned.