[Users] Question on multiple filters for a LayerContainer control

[Andrew Stewart]

Thanks a lot, that is exactly what I needed! :)

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From: users-bounces at geoext.org [mailto:users-bounces at geoext.org] On Behalf Of Ryan Williams
Sent: September 01, 2010 8:59 AM
To: users at geoext.org
Subject: Re: [Users] Question on multiple filters for a LayerContainer control

We had a similar challenge here, one of our web programmers helped me figure this out.
In this situation, I wanted all layers with a name that did NOT include "Balance", "Ratio",  or "Highlight" to appear in this layercontainer:

loader: {
                            filter: function(record) {
                                var myarr = new Array();
                                myarr[0]=record.get("layer").name.indexOf("Balance");
                                myarr[1]=record.get("layer").name.indexOf("Ratio");
                                myarr[2]=record.get("layer").name.indexOf("Highlight");

                                if(myarr[0]==-1 && myarr[1]==-1 && myarr[2]==-1){
                                    return true;
                                }else{
                                    return false;
                                }
                            }

Not sure if it's THE best solution, but it does work and it's fairly simple to add additional words to search for.
Hope this helps,

Ryan

On 9/1/2010 9:49 AM, Andrew Stewart wrote:
I am faily new to GeoExt and openlayers. What I am trying to do is add multiple filters to a layercontainer so that I can add multiple layers to each group. Not sure if this is the best way to do this but what I want to do is add all my Street Labels to a group called "Labels" I can add one no problem called Overview Streets with the following code, but I need to add additional layers like one called Quadrant Streets. When I try to modify the filter code to add additional names it doesn't work and I get javascript errors. Any help appreciated!

//Define Layer List Control - Tree Control for Legend Control
        var layerList_Labels = new GeoExt.tree.LayerContainer({
        text: 'Labels',
        layerStore: mapPanel.layers,
        leaf: false,
        expanded: false,
        loader: {
            filter: function(record) {
             return record.get("layer").name.indexOf("Overview Streets") !== -1          (need to add Quadrant Streets here also)
            }
        }
        });




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--
Ryan Williams, GISP
GIS Analyst / Programmer
PAQ Interactive Inc.
107 S State St., Suite 300
Monticello, IL 61856-1968


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