Add optional Datastar plumbing

2026-07-30 19:41:52 +00:00
parent d0efab7db0
commit 36d6207bf2
5 changed files with 82 additions and 0 deletions
@@ -0,0 +1,38 @@
+String datastar_data_lines(String field, String value)
+{
+	String out = "";
+	for(String line : split(value, "\n"))
+		out += "data: " + field + " " + line + "\n";
+	return(out);
+}
+
+void datastar_sse_headers(Request& context)
+{
+	context.call["app"]["page_type"] = "blank";
+	context.header["Content-Type"] = "text/event-stream; charset=utf-8";
+	context.header["Cache-Control"] = "no-cache, no-store, must-revalidate";
+	context.header["X-Accel-Buffering"] = "no";
+}
+
+String datastar_event(String event_name, StringMap fields)
+{
+	String out = "event: " + event_name + "\n";
+	for(const auto& field : fields)
+		out += datastar_data_lines(field.first, field.second);
+	out += "\n";
+	return(out);
+}
+
+String datastar_patch_elements(String html)
+{
+	StringMap fields;
+	fields["elements"] = html;
+	return(datastar_event("datastar-patch-elements", fields));
+}
+
+String datastar_patch_signals(String signals_json)
+{
+	StringMap fields;
+	fields["signals"] = signals_json;
+	return(datastar_event("datastar-patch-signals", fields));
+}