Update deeply nested property - transform

Apologies that this is not a real issue related to JSONata, but my misunderstand of its inner works (or maybe it is)

Consider following object:

{
  "ipaddress": "10.0.0.218",
  "network": {
    "children": [
      {
        "children": [
          {
            "children": [
              {
                "children": [
                  {
                    "name": "iMac",
                    "properties": {
                      "ip": "10.0.0.217",
                      "reachable": false
                    }
                  },
                  {
                    "name": "XPenology NAS",
                    "properties": {
                      "ip": "10.0.0.200",
                      "reachable": false
                    }
                  },
                  {
                    "name": "Laser Printer",
                    "properties": {
                      "ip": "10.0.0.100",
                      "reachable": false
                    }
                  }
                ],
                "name": "SWITCH_CF2",
                "properties": {
                  "ip": "10.0.0.3",
                  "reachable": false
                }
              },
              {
                "name": "Home Automation Server",
                "properties": {
                  "ip": "10.0.0.6",
                  "reachable": false
                }
              }
            ],
            "name": "SWITCH_CF1",
            "properties": {
              "ip": "10.0.0.2",
              "reachable": false
            }
          },
          {
            "children": [
              {
                "name": "espressif",
                "properties": {
                  "ip": "10.0.0.218",
                  "reachable": false
                }
              },
              {
                "name": "Sonoff Bridge",
                "properties": {
                  "ip": "10.0.0.26",
                  "reachable": false
                }
              },
              {
                "name": "Sonoff - Printer Power",
                "properties": {
                  "ip": "10.0.0.232",
                  "reachable": false
                }
              },
              {
                "name": "NL0130",
                "properties": {
                  "ip": "10.0.0.234",
                  "reachable": false
                }
              }
            ],
            "name": "UBNT AP",
            "properties": {
              "ip": "10.0.0.230",
              "reachable": false
            }
          }
        ],
        "name": "UBNT ERX",
        "properties": {
          "ip": "10.0.0.1",
          "reachable": false
        }
      }
    ],
    "name": "Internet",
    "properties": {
      "ip": "google.com",
      "reachable": false
    }
  },
  "state": true
}

General idea: find ipaddress in ip and set reachable to the state value, while keeping the network object in tact.

I ended up with a transform expression:

**.network ~>| *.properties[$contains(ip,$$.ipaddress)] |{"reachable":$boolean($$.state)} |

This sometimes works, sometimes doesn’t. I use $$.ipaddress and wonder if that correct, something like **.ipaddress (?) but jsonata does not accept it.

Can anyone perhaps steer me in the right direction ?

[andrew-coleman]

You’re nearly there. I think this does what you want:

network ~>| **.properties[$contains(ip,$$.ipaddress)] |{"reachable":$boolean($$.state)} |

See https://try.jsonata.org/jAS6Kqp5b

[bakman2]

I see what went wrong, I had to use the $globalContext object as input instead of the network object that I passed through. Thanks again.