Filter (no display) layers in GeoExt.LegendPanel using LIKE operator

Question

This works to avoid Basemap layers such as Google Maps and overlays such as WMS to appear in the GeoExt Legend Panel:

var legendPanel = new GeoExt.LegendPanel({
    border: false,
    filter: function(record){
        if(!(record.getLayer().isBaseLayer) && (record.getLayer() instanceof OpenLayers.Layer.WMS)){
        return true;
        }
    } });

The problem is that I need to filter (ie. no display) layers with names having "beam" in their names, I tried with no success this:

return record.getLayer().displayInLayerSwitcher == false && record.getLayer().name == '%beam%';
return record.getLayer().displayInLayerSwitcher == false &&
record.get("layer").name.indexOf("%beam%") == -1;
return record.get("layer").name.indexOf("%beam%") == -1;

Any hints are welcomed,

Answer 1

Just remove the "%". Use

return record.getLayer().name.indexOf("beam") == -1;

instead of

return record.getLayer().name.indexOf("%beam%") == -1;