htmx 4.0 is under construction — migration guide

Accept

Content types htmx accepts from the server

The Accept request header is set to text/html, text/event-stream on all htmx requests.

This tells the server that htmx accepts both HTML and SSE streams.

Example

Accept: text/html, text/event-stream
accept = request.headers.get('Accept') if 'text/event-stream' in accept: return stream_sse_events() else: return render_html()