FeatureLayer selectFeatures only displays one feature

[SarahNoakes1]

I am creating a select features tool.  It will work as follows:

• The user draws a polygon
• The draw-end event fires a function that runs an identifyTask to query the visible layers (NB. the identifyTask does NOT return the geometry).
• The callback function from the identifyTask loops through the results set and creates four arrays - a list of the layers, a list of the ids, a list of the geometry types and a corresponding set of HTML tables detailing the feature attributes for that layer
• The first array is used to create a drop-down list of layers, and when the selection changes, the display changes to display the relevant table.

So far so straightforward.

I also want the selected features to be highlighted when the layer selection is changed.  To achieve this I have:

• Created a featureLayer (using the id from the array) with the mode set as MODE_SELECTION
• Set the selection symbol (uses the geometry type array to determine what type of symbol this should be)
• Created a queryTask using the geometry of the polygon created in the first step
• Run the selectFeatures method on the featureLayer using the queryTask
• Added the featureLayer to the map.

However, only the first feature in each layer is highlighted.  Yet if I look at the query results in the browser console I can see multiple results are returned.

What am I missing?

Thanks,

Sarah Noakes

Cornwall Council

[Anonymous User]

Do you have any code you could share?

I did notice on the API page that for 'MODE_SELECTION' there are specific instructions about adding features:

1. Call the selectFeatures method.
2. Listen for the onSelectionComplete event.
3. Once onSelectionComplete fires, retrieve the selected features using the getSelectedFeatures method.

[SarahNoakes1 · Accepted solution]

Hi Sarah,

Thanks for getting back to me.  I've figured it out now - It was to do with how I was creating the FeatureLayer.  I had:

featureLayerSelectManyURL = intranetMapServiceURL + "/" + arrTableIds[0];

featureLayerSelectMany = new FeatureLayer(featureLayerSelectManyURL, {mode: FeatureLayer.MODE_SELECTION});

whereas what I needed was:

featureLayerSelectManyURL = intranetMapServiceURL + "/" + arrTableIds[0];

featureLayerSelectMany = new FeatureLayer(featureLayerSelectManyURL, {mode: FeatureLayer.MODE_SELECTION, outFields: ["*"]});

Goodness only knows why defining the outFields makes as difference - but it does!  Only took the best part of a day ;o)

Cheers,

Sarah.