Latest Contributions by UndralBatsukh

Hi there,  So in your example, your layer will always have null values for all features except for the objectId. You can change this by setting the outFields property on the FeatureLayer so the layer fetches attributes for additional fields. I changed it so that it fetches attributes for all fields.  const layers1 = new FeatureLayer({ url: "https://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer/0", featureReduction: clusterConfig, outFields: ["*"], popupTemplate: { title: "city", content: popupListContent } });   Then in your popupListContent, you can check if the feature has null values as shown below:  function popupListContent(feature) { const tableContent = document.createElement("table"); tableContent.classList.add('tablelayout'); tableContent.classList.add('esri-widget__table'); let infoTamplateData = ""; let object = feature.graphic.attributes; const fieldArr = []; if (feature.graphic.layer && feature.graphic.layer.fields) { feature.graphic.layer.fields.forEach(element => { // check if the feature has values if (feature.graphic.attributes[element.name] && feature.graphic.attributes[element.name] !== null){ fieldArr.push(element.name); } }); } fieldArr.forEach((f) => { infoTamplateData += "<tr label= " + f + "><th class='esri-feature__field-header' >" + f + " </th><td class='esri-feature__field-data'>" + object[f] + "</td> </tr>"; }); tableContent.innerHTML = infoTamplateData; return tableContent; } ... View more

Hi there,  Depends on what version of the API we are talking about here. At 4.21 and 4.22, we made improvements to refreshable layers.  At 4.21: https://developers.arcgis.com/javascript/latest/4.21/#refreshable-layers, we made changes to FeatureLayer refresh logic.  To reduce load on the server and minimize unnecessary requests, the FeatureLayer will only request data at its specified refreshInterval if the lastEditDate in the layer's metadata has changed. If the FeatureLayer does not have lastEditDate info, then the layer will refresh unconditionally. We added support for refreshInterval and refresh method on WFSLayer at 4.21. We added support for refreshInterval and refresh method on GeoJSONLayer, CSVLayer and GeoRSSLayer at 4.22 So if you have a FeatureLayer has has LastEditDate, then you will not see refresh requests to the service unless the lastEditDate changes (meaning the data has changed). This is the only time you will see requests to the service.  For other layers, yes you should see requests at specified intervals. You will requests for all layers. Number of requests won't match the number of layers. You can see multiple requests for each layer. We need to fetch enough data to cover the view.extent.  ... View more

Yes indeed. We did make improvements to refreshable layers at version 4.21 and 4.22. In the process we fixed bugs as well.  https://developers.arcgis.com/javascript/latest/4.21/#refreshable-layers https://developers.arcgis.com/javascript/latest/release-notes/#refreshable-layers   ... View more