How to get the data source for added layer?

Ming

With Experience Builder Developer edition v1.15, after add a feature layer to map, is there any event knows that the data source has been updated?

In following code, the dsObservations is undefined.

 

 const fullObservationsLayer: __esri.FeatureLayer = new FeatureLayer({

                    url: props.config.fullObservationsUrl

                  })

                  currentJimuMapView.view.map.add(fullObservationsLayer)

                  currentJimuMapView.view.whenLayerView(fullObservationsLayer)

                    .then(async function (layerView) {

                      const dsManager = DataSourceManager.getInstance()

                      const dsMain = dsManager.getDataSource(currentJimuMapView.dataSourceId)

                      await dsMain.childDataSourcesReady()

                      const dsObservations: FeatureLayerDataSource = dsManager.getDataSource(`${dsMain.id}-${layerView.layer.id}`) as FeatureLayerDataSource

                    })

                    .catch(function (error) {

                      console.log(error.message)

                    })

 

Thanks for any idea!

 

Or this following link is the only way to add data source to map for Experience Builder Developer edition?

https://community.esri.com/t5/arcgis-experience-builder-questions/making-runtime-featurelayers-register-as/m-p/1473175#M12641

JeffreyThompson2

It took me about a year to fully understand this concept, but adding data to the map and creating an Experience Builder datasource are two entirely separate things. Adding a layer to the map will make it appear visually, but many of the advanced data functions will not be available. 

To get all of the data functions, you must convert your FeatureLayer to a datasource and send a message to the framework notifying it of a new datasource. Your code does not do these things. If you need all of the data functions, you need to use some code like in the link above. The solution in this post found a better version of my code. https://community.esri.com/t5/arcgis-experience-builder-questions/loss-of-renderer-with-runtime-created-data-source/m-p/1540095#M14963

Also here is a complete working widget that add and removes layers as datasources. https://community.esri.com/t5/experience-builder-custom-widgets/add-remove-layers-2-0/ta-p/1540096