@paul53
Thanks, works like a charm. I've put 28800000 for 8-hour save interval and instantly sd card writes dropped to almost zero on that PRI. Would be great if that interval could be configurable somewhere in the future

Yes, that's true.

And for the record, this issue (with Fibaro sceneId) is totally solved with two PR's to mqtt-client adapter proposed by @AlCalzone (#46 & #47) and merged by @apollon77

You guys are amazing!

Yes, that's true.

And for the record, this issue (with Fibaro sceneId) is totally solved with two PR's to mqtt-client adapter proposed by @AlCalzone (#46 & #47) and merged by @apollon77

You guys are amazing!

I've never used Javascript in ioBroker, but I have installed Javascript adapter now, created that channel and object under 0_userdata.0 and......
WOW, it works as it should !!!!!!!!!!!!
I get 26 and 24 values on 1- and 2-click and then the objects turns to 0. And it works with mqtt-client putting it to the broker just fine:

Thank you @paul53 for this quick solution!

I hope mqtt-client (and probably zwave2) adapters will be address with this issue in the future, but for now I may switch my lights again!

@apollon77

That issue I've also reported here
https://github.com/AlCalzone/ioBroker.zwave2/issues/597

tnowak created this issue in AlCalzone/ioBroker.zwave2

closed Scene_Activation.sceneId null value seems to be crashing mqtt-client #597

Thats strange:

And I still see this object in ioBroker admin panel

@apollon77 said in How to replace null with 0 using alias-manager:

Ok, jetuzt mal ganz genau: was ist der exakte wert?

• In allen screenshots ist gar kein Wert zu sehen - auch nicht "null"
• Der mqtt-client Adapter crasht weil der state an sich "null" ist - also NICHT "state wert ist null" sondern es gibt gar keinen state!! Nix
• Aliasse greifen dann nicht weil Sie nur Werte mappen - bedeutet also das der resulting Alias auch "keinen Wert hat"

Am besten dazu jetzt mal

iobroker state get zwave2.0.Node_014.Scene_Activation.sceneId

machen und Ausgabe posten.

Yes, no value is seen on the screenshots because there no value at all for most of the time. It gets "26" or "24" depending on number of clicks, but only for a second. Then it returns to empty / null.
Now, because mqtt-client can't handle this correctly, I've been trying to alias this object somehow to push it to MQTT anyway. So, I can not rewrite empty object with any custom value (such as "0" for instance)?

@apollon77

• JS-Controller version: 3.2.16
• Node version: v12.22.1
• Operating system: docker image @ Raspberry OS
• all adapters in current released versions

Mqtt-client crash log is here (I've created an issue out of this):
https://github.com/Pmant/ioBroker.mqtt-client/issues/45

tnowak created this issue in Pmant/ioBroker.mqtt-client

closed Uncaught exception: Cannot read property 'from' of null #45

@apollon77

This is JSON for an alias object:

{
  "from": "system.adapter.admin.0",
  "user": "system.user.admin",
  "ts": 1619609676629,
  "common": {
    "name": "Scene ID",
    "role": "level",
    "type": "number",
    "read": true,
    "write": true,
    "alias": {
      "id": "zwave2.0.Node_014.Scene_Activation.sceneId",
      "read": "val == null?0:val"
    }
  },
  "native": {},
  "acl": {
    "object": 1636,
    "owner": "system.user.admin",
    "ownerGroup": "system.group.administrator",
    "state": 1636
  },
  "_id": "alias.0.Fibaro_Dimmer_1_SceneID.sceneId",
  "type": "state"
}

and this is for the source object:

{
  "type": "state",
  "common": {
    "role": "level",
    "read": true,
    "write": true,
    "name": "Scene ID",
    "type": "number",
    "min": 1,
    "max": 255
  },
  "native": {
    "nodeId": 14,
    "valueId": {
      "commandClass": 43,
      "endpoint": 0,
      "property": "sceneId"
    }
  },
  "from": "system.adapter.zwave2.0",
  "user": "system.user.admin",
  "ts": 1619558168447,
  "_id": "zwave2.0.Node_014.Scene_Activation.sceneId",
  "acl": {
    "object": 1636,
    "state": 1636,
    "owner": "system.user.admin",
    "ownerGroup": "system.group.administrator"
  }
}

Thanks

@alcalzone I've changed common.type to number - no change.
@Homoran Tried also == and no change.

So I have this object: SceneId:

When I press a mono-switch connected that dimmer I see value "26" for a blink of an eye, than there's noting in that field (I believe its "null"). This null somehow crashes mqtt-broker, so I wanted to change "null" to "0".

But in an alias object:

Its exactly the same - 26 shows for a blink of the eye and then nothing. Both with val === null?0:val and val == null?0:val.
This alias object also crashes mqtt-client adapter with uncaught null exception.

This is full config of my alias. I'm not sure if I understand all correctly.

@homoran said in How to replace null with 0 using alias-manager:

I really don't know, but please try val === null?0:val

Thanks, but it doesn't seem to work