topic Re: Loading FeatureLayer with Treeview.OnClick in ArcGIS JavaScript Maps SDK Questions

Loading FeatureLayer with Treeview.OnClick

KeithAnderson — Wed, 28 Jan 2015 20:53:50 GMT

Friends

I want to create and display a single FeatureLayer from a different endpoint each time a tree node is clicked on.

The FeatureLayer should include symbology.

I pass in the Item.url with onClick and it works on the first pass.

The next .onClick is a different item.url and it bombs because it cannot create a new FeatureLayer.

TypeError: FeatureLayer is not a constructor

Suggestion on how to structure this.

Thanks

Keith

Re: Loading FeatureLayer with Treeview.OnClick

KenBuja — Sat, 11 Dec 2021 09:21:40 GMT

Change the name of your FeatureLayer variable to see if that makes any difference. It could be getting confused with the variable name assigned to the module "esri/layers/FeatureLayer",

  featureLayer = new FeatureLayer(item.endpointurl,
    {
        mode: FeatureLayer.MODE_ONDEMAND,
        infoTemplate: infoTemplate,
        outFields: ["*"]
    });

  featureLayer.setSelectionSymbol(fieldsSelectionSymbol);
  map.addLayer(featureLayer);

Re: Loading FeatureLayer with Treeview.OnClick

KeithAnderson — Wed, 28 Jan 2015 21:22:01 GMT

Thank you Ken!

Don’t I feel like a dope.

I was thinking this would destroy the previous FeatureLayer and display only the new one.

Now I have two FeatureLayers displaying.

If I put an id: on it would that overwrite it?

Suggestions?

Thanks again.

Re: Loading FeatureLayer with Treeview.OnClick

KenBuja — Wed, 28 Jan 2015 21:34:42 GMT

If you only want to show one layer at a time, then you could simply remove the old one "map.removeLayer(featureLayer)" and add in the new one. You'll get an error if you put in the same id for two different items.

Re: Loading FeatureLayer with Treeview.OnClick

KeithAnderson — Wed, 28 Jan 2015 21:39:25 GMT

Thank you so much for your services.