datastar/site/static/md/examples/update_signals.md

Update Signals

Demo

Apply random signals Remove 2 random signals

 <pre
      class="border-2 border-accent bg-base-200 text-accent text-sm rounded-lg focus:ring-primary focus:border-primary block w-full p-2.5"
      data-text="ctx.signals.JSON()"
      data-on-signals-change="ctx.el.textContent = ctx.signals.JSON()"
 >
      Stuff in signals
 </pre>

Explanation

This example demonstrates how to update the signals using an SSE event.

event: datastar-merge-signals,
data: signals { HYAAA4BK7IFQE: "2024-05-23T10:33:14.167189214-07:00", existingSignals: "this already exists"}

It will accept anything that is also accepted by the data-signals attribute.

The removal event looks like this:

event: datastar-remove-signals,
data: paths 12768 existingSignals

Where the paths are . delimited paths. For namespaced signals it might look like foo.bar.baz. Using the Go helpers for example this looks like datastar.RemoveSignals(sse, keysToRemove...)