How to move related feature to a new parent feature in Field Maps and update globalid upon relocation
I deployed the Signs Inventory ArcGIS Solution. One scenario coming up: moving a sign from one pole on one side of the street to a different pole on the other side of the street without retiring/creating a new sign id. I store the Pole ID and the Pole GlobalID in the Signs layer. The globalids are the keys between Signs and Poles.
I want Pole ID and the Pole GlobalID to update when I move a sign to a new post in Field Maps/Smart Form online. It currently does not.
The related records on Signs (Sign Maintenance table) also fetches Signs: sign ID, pole ID, sign global ID, pole global ID, and latitude/longitude each time a record is added - to retain the move history over the years (hypothetically).
How might I write Arcade to overwrite the pole's globalID in Signs layer with it's new related pole globalID?
My first thought was doing a "buffer/nearest" pole calculated expression, but it seems once the pole globalid field is populated in Signs upon creation - it is not editable and the calculated expression is ignored.
"Editing is disabled in the field settings". Is this a setting I can modify in the REST API or JSON using ArcGIS Assistant?
Expression to fetch Pole ID (assetid) into Signs layer for assetID_pole
var poles = FeatureSetByRelationshipName($feature, 'Poles',['assetid'],true)
// Get the feature set for the poles
// Get the first poles (should only be one)
var pole = First(poles)
// If there was a pole, return the assetid of it,
// Otherwise, return null
if (!IsEmpty(pole)) {
return pole['assetid']
} else {
return null
}
At some point I tried implementing a calculated expression in the form (like what I did for location description below, getting the nearest county road). For that it was told to fetch the nearest pole globalid within a 10 ft buffer of the sign, but didn't do anything so I removed it.
// If feature doesn't have geometry return null
if (IsEmpty(Geometry($feature))) { return null }
// Get the roads layer
var agol = 'https://www.arcgis.com/'
var roads = FeatureSetByPortalItem(Portal(agol), '7abbff41fefe4bfa88cec88256022c33',2,['RD_SYMBOL','RD_SYSTEM'],true)
var CR_CSAH = "RD_SYMBOL IS NOT NULL AND (RD_SYSTEM ='CR' OR RD_SYSTEM = 'CSAH')"
var rel_roads = Filter(roads, CR_CSAH)
// Buffer the current location and intersect with roads
var bufferedLocation = Buffer($feature, 200, 'feet')
var candidateroads = Intersects(rel_roads, bufferedLocation)
// Calculate the distance between the road and the current location
// Store the feature and distance as a dictionary and push it into an array
var featuresWithDistances = []
for (var f in candidateroads) {
Push(featuresWithDistances,
{
'distance': Distance($feature, f, 'feet'),
'feature': f
}
)
}
// Sort the candidate roads by distance using a custom function
function sortByDistance(a, b) {
return a['distance'] - b['distance']
}
var sorted = Sort(featuresWithDistances, sortByDistance)
// Get the closest feature
var closestFeatureWithDistance = First(sorted)
// If there was no feature, return null
if (IsEmpty(closestFeatureWithDistance)) { return null }
// Return the address */
return `${closestFeatureWithDistance['feature']['RD_SYSTEM']} ${closestFeatureWithDistance['feature']['RD_SYMBOL']}`
Sorry for any confusion... - any FeatureSetByRelationship expressions are all behaving and responding normally - sometimes it takes a moment, but it gets there. My pole globalid guid field is editable.
I just shared the two expressions to show:
- 1st: what I'm accomplishing (grabbing other attributes based of the guid of the pole) 👍
- 2nd: the concept I used to get the new pole globalid [using this example of grabbing nearest centerlines using FeatureSetByPortalID - which works when the sign is moved 👍] but when I swap out the centerlines layer for the Poles layer portal ID and ask to return the nearest pole globalid, it doesn't overwrite the guid field 👎. It does run and return values in the expression designer - so the expression seems to be operational - just like it is for centerlines.
- Of course, if the guid is not updating when moved - those other FeatureSetByRelationship won't update either because the guid is how I'm calling attributes in.
Do you also see on a key field in the form designer in a related layer where the Editable button is greyed out and the "editing is disabled in the field settings" message? I'm wondering if this is normal behavior or if it's something I need to change first.
This is my Signs feature layer form via Map Viewer:
