django-allauth SAML

account_adapter.py

class AcmeSocialAccountAdapter(DefaultSocialAccountAdapter):
    # ...or save_user
    def populate_user(self, request: Request, sociallogin: SocialLogin, data: dict) -> Any:
        user = super().populate_user(request, sociallogin, data)
        roles = sociallogin.account.extra_data.get("roles", [])
        # Do something with extra attributes incoming from the SAML authentication response
        user.roles = map_to_your_app_roles(roles)
        return user

settings.py

SOCIALACCOUNT_PROVIDERS = {
    "saml": {
        "APPS": [
            # Apps can be configured in the DB or listed here
        ],
    },
}