Hello Jian,
 
I was able to finally get the application running.  I ran across a
posting that had the "featureNS" statement I've inserted below:
 
   var polygonLayer = new OpenLayers.Layer.WFS( "HOMELOT",
 
"http://localhost/cgi-bin/mapserv.exe?map=/ms4w/apache/htdocs/homeinfo_w
fs_attr.map&", 
    {typename: 'taxlots',
    featureNS:
"http://localhost/cgi-bin/mapserv.exe?map=/ms4w/apache/htdocs/homeinfo_w
fs_attr.map",
    typename: 'ms:taxlots'},
    {extractAttributes:true, visibility: false});  //, style:
OpenLayers.Util.extend({},OpenLayers.Feature.Vector.style['default'])});
 
I think the trick was having the typename: 'ms:taxlots' parameter
(taxlots is the name of my layer).
 
Once I did that I can see the WFS layer display, I can click on the tax
lot polygon and the framedcloud popup does pop up and the attributes are
displayed.  And the tax lot polygon is highlighted.  The next problem
now is that the WFS layer displays REAL slow.  Anything over 20 - 30
records takes too long.  I've been doing more reading on that and I'm
wondering if WFS is just that way.  So in the meantime I've switched
back to using a WMS layer and the getfeatureinfo method of displaying a
popup.

Cress

________________________________

From: Jian Zhou (via Nabble)
[mailto:[email protected]] 
Sent: Friday, October 09, 2009 2:41 AM
To: BATES Cress A (Lane Cty)
Subject: Re: [OpenLayers-Users] WFS Popup Attributes undefined


I have the same questiong like you. So your OpenLayers application is
running and all layers are displayed fine? 
What's the output after clicking on an object?Can you see the popup
fine? 
Regards 


        Cress B. wrote:
        I'm fairly new to OpenLayers and have been trying to get the
attributes from my WFS mapfile to display in a popup window.  I would
like the user to be able to click on a polygon and have the attributes
display as a list in a popup.   I've started with the
select-feature-openpoup.html example and have inserted by own WFS
mapfile.  I can load my polygon shapefile as a WFS service and see them
load as orange polygons - although they load REAL slow.  When I activate
the popup option and click on a polygon the popup window comes up and
the polygon is highlighted in blue.  The popup is returning the area of
the polygon as part of the 'feature.geometry.getArea()' parameter; but
the other attributes in my shapefile are "undefined" in the popup.  I've
hacked away for several days, reading almost all the posts dealing with
popup, WFS, attributes... and still can't figure out what I'm doing
wrong.  So I'm not sure if my WFS mapfile is wonky or if my script in
OpenLayers is missing something. 
        
        Below is my Mapfile: 
        
        
        MAP 
          NAME           'TAXLOT' 
          STATUS         ON 
          IMAGETYPE      PNG24 
          TRANSPARENT    ON 
          EXTENT         4239905 896089 4247235 902911 
          SIZE           1000 800 
          IMAGECOLOR     152 252 210 
          UNITS Feet 
          SHAPEPATH      "/ms4w/apps/tutorial/data" 
          FONTSET        "/ms4w/apps/tutorial/fonts/fonts.list" 
          SYMBOLSET      "/ms4w/apps/tutorial/symbols/symbols35.sym" 
           WEB 
            IMAGEPATH "/ms4w/tmp/ms_tmp/" 
            IMAGEURL  "/ms_tmp/" 
                   METADATA 
                   "wfs_title"           "TAXLOT" 
                   "wfs_onlineresource"
"http://localhost/cgi_bin/mapserv.exe?&";  #map=homeinfo_wfs.map&" 
                   "wms_srs"             "EPSG:32127" 
               END #end metadata 
                END #end web 
            PROJECTION 
            "init=epsg:32127" 
            END #end projection 
            
          LAYER # Taxlots polygon layer begins here 
            NAME         "taxlots" 
                CONNECTIONTYPE WFS 
                METADATA 
                  "wfs_typename"       "taxlots" 
                  "wfs_request_method" "GET" 
                  "gml_featureid"      "FID" 
                  "gml_include_items"  "all" 
                  "queryable" "true" 
            END 
            DATA         'HomeTaxlots' 
            TYPE         POLYGON 
            STATUS       ON 
                  PROJECTION 
                   "init=epsg:32127" 
                  END 
                DUMP         TRUE 
                TEMPLATE     /ms4w/apps/template/foo.html 
            CLASS 
              NAME       "lots" 
              STYLE 
                COLOR    155 155 255 
                        OUTLINECOLOR 0 15 27 
              END 
                  TEMPLATE "ttt_query.html" 
            END 
          END # Taxlots polygon layer ends here 
        END # All map files must come to an end just as all other things
must come to... 
        
        And this is the OpenLayers script piece for the popup: 
        
            <script type="text/javascript"> 
                var map, drawControls, selectControl, selectedFeature; 
                var lon = 4243545; 
                var lat = 900150; 
                var zoom = 0; 
                var map, test_wfs, layer; 
                        
                        
                function onPopupClose(evt) { 
                    selectControl.unselect(selectedFeature); 
                } 
                function onFeatureSelect(feature) { 
                    selectedFeature = feature; 
                                                var maplot =
selectedFeature.attributes['MAPLOT']; 
                                                var lot =
selectedFeature.attributes['LOT']; 
                                                var acres =
selectedFeature.attributes['ACRES']; 
                                                var taxcode =
selectedFeature.attributes['TAXCODE']; 
                    popup = new OpenLayers.Popup.FramedCloud("info", 
        
feature.geometry.getBounds().getCenterLonLat(), 
                                             null, 
                                             "<div
style='font-size:.8em'>TaxLot: " + maplot +"<br />Lot: " + lot+"<br
/>Acres: " +acres +"<br/>Taxcode: " +taxcode+"<br/>Area: " +
feature.geometry.getArea()+"</div>", 
                                             null, true,onPopupClose); 
                    feature.popup = popup; 
                    map.addPopup(popup); 
                } 
                        
                function onFeatureUnselect(feature) { 
                    map.removePopup(feature.popup); 
                    feature.popup.destroy(); 
                    feature.popup = null; 
                }     
                function init(){ 
                        
                        var options = { 
                        projection: new
OpenLayers.Projection("EPSG:32127"), 
                        displayProjection: new
OpenLayers.Projection("epsg:32127"), 
                        units: "feet", 
                        maxResolution: "auto", 
                                        allOverlays: true, 
                        maxExtent: new OpenLayers.Bounds(4239905,
895089, 
                                                         4247235,
906500) 
                    }; 
                                
                    map = new OpenLayers.Map("map",options 
                                                ); 
                    var polygonLayer = new OpenLayers.Layer.WFS(
"TAXLOT", 
        
"http://localhost/cgi-bin/mapserv.exe?map=/ms4w/apache/htdocs/homeinfo_w
fs_good.map&", 
                                        {typename: 'taxlots'}); 
        
                    //var polygonLayer = new
OpenLayers.Layer.Vector("Polygon Layer"); 
        
                    map.addLayers([polygonLayer]); 
                                
                    map.addControl(new
OpenLayers.Control.LayerSwitcher()); 
                    map.addControl(new
OpenLayers.Control.MousePosition()); 
                    
                    selectControl = new
OpenLayers.Control.SelectFeature(polygonLayer, 
                        {onSelect: onFeatureSelect, onUnselect:
onFeatureUnselect}); 
                    drawControls = { 
                        polygon: new
OpenLayers.Control.DrawFeature(polygonLayer, 
                                    OpenLayers.Handler.Polygon), 
                        select: selectControl 
                    }; 
                    
                    for(var key in drawControls) { 
                        map.addControl(drawControls[key]); 
                    } 
        
                    
                    map.setCenter(new OpenLayers.LonLat(0, 0), 3); 
        
                } 
        
                function toggleControl(element) { 
                    for(key in drawControls) { 
                        var control = drawControls[key]; 
                        if(element.value == key && element.checked) { 
                            control.activate(); 
                        } else { 
                            control.deactivate(); 
                        } 
                    } 
                } 

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