If-None-Match ~ htmx

The If-None-Match request header is sent when the element has a cached ETag from a previous response.

Use this for conditional requests. Return 304 Not Modified if content hasn’t changed to save bandwidth.

Example

Server checks the ETag.


If-None-Match: "33a64df551425fcc55e4d42a148795d9f25f89d4"


etag = request.headers.get('If-None-Match')
if etag == current_etag:
    return Response(status=304)
else:
    return Response(content, headers={'ETag': current_etag})