Handle falsy value in ha-yaml-editor (object selector)

[farmio]

Proposed change

When the ha-yaml-editor was loaded with falsy data, it would show no data.
Eg. in an object selector, when data was explicitly 0 or false.
With this change it shows the data if it isn't explicitly undefined.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

This is a demo of the object selector handling falsy values before this change. (persistent notification just as example action that has an object selector and is available on every installation).

Bildschirmaufnahme.2024-09-27.um.23.01.01.mov

Additional information

• This PR fixes or closes issue: fixes When using the knx.send function to send a "0" to the bus, the UI does not show the "0" payload when reentering #22062
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

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[farmio]

What currently still doesn't work is explicit null.

data:
  data: null

This is because

frontend/src/components/ha-service-control.ts

Lines 802 to 810 in d7aaa41

	private _serviceDataChanged(ev: CustomEvent) {
	ev.stopPropagation();
	const key = (ev.currentTarget as any).key;
	const value = ev.detail.value;
	if (
	this._value?.data?.[key] === value ||
	(!this._value?.data?.[key] && (value === "" || value === undefined))
	) {
	return;

would return because of line 808.

Should this be changed too to support explicit null? Since this method is used for all selectors, I'm not sure if there are caveats here.

[bramkragten]

What currently still doesn't work is explicit null.

data:
  data: null

This is because

frontend/src/components/ha-service-control.ts

Lines 802 to 810 in d7aaa41

	private _serviceDataChanged(ev: CustomEvent) {
	ev.stopPropagation();
	const key = (ev.currentTarget as any).key;
	const value = ev.detail.value;
	if (
	this._value?.data?.[key] === value ||
	(!this._value?.data?.[key] && (value === "" || value === undefined))
	) {
	return;

would return because of line 808.
Should this be changed too to support explicit null? Since this method is used for all selectors, I'm not sure if there are caveats here.

I think that can be updated to support null. Change line 808 to:

      ((!this._value?.data || !(key in this._value.data)) && (value === "" || value === undefined))

[farmio]

Done. Seems to work nicely. 👍