Sure. My url is generated in Arcade, see below. You can ignore most of it but I spent a long time trying to get the callback variables to work. Basically I found that if I included my callback variables in a parameters dictionary as I've done for the survey123 parameters and then used the UrlEncode function, Field Maps didn't appear to like that and kept telling me that I needed to supply the featureID parameter despite it being there in the url. I ended up realising that Field Maps doesn't like any ampersands after the callback which is why I've had to encode these manually rather than using the UrlEncode function on the parameters dictionary, which kept adding the ampersands back in.
The callback part of my script could probably be written a bit more elegantly as I'm still fairly new to Arcade but this worked so I didn't want to mess with it too much! Like you say it would be great to pull data back from S123 in the callback but I was at least glad to be able to get it to update the layer in Field Maps once the form had been completed. The only thing I don't like is that when it goes back to Field Maps the updateFeature element reopens the form and it'd be great if it just wrote "Yes" to the field without the form being opened again, to avoid the surveyor changing anything else by accident.
Don't know if that's of any of use but just wanted to acknowledge your post as it was the first thing I'd seen that suggested additional callback parameters may be possible. Cheers
//Convert coordinates to wgs84 for use in survey123
function WebMercatorToWGS84 (x, y) {
var lon = (x / 20037508.34) * 180;
var lat = (y / 20037508.34) * 180;
lat = 180/PI * (2 * Atan(Exp(lat * PI / 180)) - PI / 2);
return {
y: lat,
x: lon
}
}
//Launch survey123
var urlsource ="arcgis-survey123://?itemid=XXXXXXX&";
//Get centroid of feature
var geom = Centroid($feature)
//Generate coordinates from centroid
var coords = WebMercatorToWGS84(geom.x, geom.y)
//Format coordinates so they work with survey123 geopoint
var splitcoords = coords.y + "," + coords.x
//Get polygon area to pass to survey123
var featurearea = Round(AreaGeodetic($feature, 'square-meters'), 2)
//Format globalid
var fglobalid = Mid($feature.globalid, 1,36)
//Generate other url parameters to pass to survey123
var params = {
center: splitcoords,
"field:FeatureProjectCode": $feature.PolygonProjectCode,
"field:FeatureSiteID": $feature.PolygonSiteID,
"field:IDCount": $feature.PolygonCount,
"field:CommonName": $feature.PolygonCommonName,
"field:parentglobalid": $feature.parentglobalid,
"field:GeometryGUID": $feature.globalid,
"field:FeatureType": "Polygon",
"field:FeatureSize": featurearea
};
var callback = {
}
var callbackid = "featureID=" + fglobalid
var callbackattributes = 'featureAttributes={"PolygonDataEntered":"Yes"}'
return urlsource + UrlEncode(params) + "&" + UrlEncode(callback) + "%26" + UrlEncode(callbackid) + "%26" + UrlEncode(callbackattributes)
