topic Re: how to Get all selected features Ids from a buffer results in ArcGIS JavaScript Maps SDK Questions

how to Get all selected features Ids from a buffer results

HushamHassan — Sat, 11 Dec 2021 20:10:06 GMT

Is it Possible to get prop_id for each Parcels selected in a buffer results, so I can pass them to SQL query, for example if the buffer return 10 parcels I need to get all the prop_id for the 10 parcels..

_showBuffer: function(features){
            $('.results.multipleBuffer').hide();
            var bufferSymbol = symbols.buffer;
            map.graphics.clear();
            if (features.length > 0) {
                var graphic = new Graphic(features[0], bufferSymbol);
                map.graphics.add(graphic);
                queryTask = new QueryTask(config.mapServices.dynamic + "/" + config.parcelLayerID);
                var bufferQuery = new Query();
                bufferQuery.outFields = ["*"];
                bufferQuery.returnGeometry = true;
                bufferQuery.geometry = features[0];
                queryTask.execute(bufferQuery).then(lang.hitch( this, function (fset) {
                    var bufferFeatures = fset.features;
                    console.log(bufferFeatures);
                    this._createTable(bufferFeatures);
                    //console.log(bufferFeatures);
                    navEvent('point');
                    if (fset.features.length > 0) {
                        var allGraphics = array.map(fset.features, function (feature) {
                            return feature;
                        });
                        unionExtent = graphicsUtils.graphicsExtent(allGraphics);
                        map.setExtent(unionExtent.expand(1.5));
                    }
                }));
            }
        },

Re: how to Get all selected features Ids from a buffer results

RobertScheitlin__GISP — Thu, 11 Aug 2016 13:18:19 GMT

Husham,

Sure you can. You already have the graphics that are selected based on intersecting the buffer(s). So you would loop through the fset.features and once you have a single feature (i.e. var feat = fset.features😉 then you would get that features attributes property and then the field you are interested in (i.e. fset.features[0].attributes.prop_id).

Re: how to Get all selected features Ids from a buffer results

HushamHassan — Thu, 11 Aug 2016 14:38:45 GMT

Thank you Robert, Could you please provide code sample for the loop.

Regards

Re: how to Get all selected features Ids from a buffer results

RobertScheitlin__GISP — Sat, 11 Dec 2021 20:10:08 GMT

Husham,

You are already looping through the results so it would simply be something like this:

                    if (fset.features.length > 0) {
                        var Gids = [];
                        var allGraphics = array.map(fset.features, function (feature) {
                            Gids.push(feature.attributes.prop_id);
                            return feature; 
                        }); 
                        unionExtent = graphicsUtils.graphicsExtent(allGraphics); 
                        map.setExtent(unionExtent.expand(1.5)); 
                    }
                    //Then you use the Gids array to populate your SQL query i.e. var sqlText = "Select * from TableX Where FieldX IN (" + Gids.join() + ")";

Re: how to Get all selected features Ids from a buffer results

HushamHassan — Thu, 11 Aug 2016 16:32:01 GMT

Robert,

That is really great Help.

Thank you