[OpenLayers-Users] WFS Popup Attributes undefined
Cress B.
cress.bates at co.lane.or.us
Fri Oct 9 11:29:30 EDT 2009
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:ml-user+294929-2098314117 at n2.nabble.com]
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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