[Bug]: Blockly attributs in JSON show NULL

[Chris87-ux]

I'm sure that

• This issue is still present in the current beta version of this adapter
• There is no other (open) issue with the same topic (use the search!)
• This issue is not described in the adapter documentation / FAQ (read the docs!)

Script type

Blockly

The problem

I have a JSON with various attributes, some of them can be read out with the blocky function, otheronce cant.

I asked the question of Facebook already and a other user confirmed, that its a issue of the getAttr(). On use of JSON.parse() with [" "] it is working.

iobroker.current.log (in debug mode!)

No response

Version of nodejs

18.17.1

Version of ioBroker js-controller

5.0.19

Version of adapter

8.3.1

[klein0r]

Okay that's an edge case. You can use JSONata to get that Attribute.

position.altitute is a path in an object like

{
  "position": {
    "altitude": 1234
  }
}

But your attribute is named position.altitute like:

{
  "position.altitude": 1234
}

[klein0r]

This is not easy to implement. e.g.

{
  "bla": {
    "geo.position": {
      "altitude": 1234
    }
  }
}

What is the path? bla.geo.position.altitude ? Maybe we should implement the default JavaScript syntax:

bla['geo.position'].altitude

[Chris87-ux]

Thanks very much, this is the actual Json which I get from the Server:

Its an Array of these JSONs, in general I'm only interested on the last one (actual one).

[klein0r]

The structure of the response is not very common:

"position.altitude": 471,
"position.direction": 323,
"position.hdop": 1.6,
"position.latitude": 48.48151,
"position.longitude": 11.236118,
"position.pdop": 1.9,
"position satellites": 8,
"position.speed": 0,
"position.valid": true,

Should be:

"position": {
  "altitude": 471,
  "direction": 323,
  "hdop": 1.6,
  "latitude": 48.48151,
  "longitude": 11.236118,
  "pdop": 1.9,
  "satellites": 8,
  "speed": 0,
  "valid": true
}

Please use JSONata in Blockly to extract the information

[Chris87-ux]

Fully aggree with you, as it seems they convert it from a mqtt interface.
How would look the argument than for my first example? https://github.com/ioBroker/ioBroker.javascript/blob/master/docs/de/blockly.md#convert-by-jsonata-expression

If I don't split the JSON and I would like to use the last information:
Result[-1].["position.latitude"] ?