Django & Nginx w/Gunicorn full https

settings.py

# Forward all to https for Django / DRF viewsets

# settings.py
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTOCOL', 'https')

# Nginx location header (see also http://nginx.org/en/docs/http/configuring_https_servers.html)
location / {
    # ...
    proxy_set_header X-Forwarded-Protocol $scheme;
    # ...
}