[OpenLayers-Dev] OpenLayers.Feature.Vector question

Oscar Fonts oscar.fonts.lists at gmail.com
Tue Jun 3 03:06:43 EDT 2008


Hi,

There are "params" ->  WFS call, and "options" -> JS object properties.

Try moving "extractAttributes:true" from "params" to "options", as is an OL
fuctionality, not WFS protocol.

http://dev.openlayers.org/releases/OpenLayers-2.6/doc/apidocs/files/OpenLayers/Layer/WFS-js.html#OpenLayers.Layer.WFS.OpenLayers.Layer.WFS

Oscar.
---


2008/6/2 Robert Sanson <SansonR at asurequality.com>:

>  I am still struggling with attributes from a WFS layer.
>
> I have a WFS layer, which I understand inherits from
> OpenLayers.Feature.Vector. I set "extractAttributes: true" as in:
>
> var apiwfs = new OpenLayers.Layer.WFS("API WFS",
>           "http://10.65.192.1/cgi-bin/apinzmg.exe?",
>           {typename: 'apiaries_dev', maxfeatures: 100, extractAttributes:
> true},
>           {scales: [150000, 10]});
>
> The layer loads fine and displays on my map. When I try to extract the
> attributes with:
>
> var options = {
>                     hover: true,
>                     onSelect: function(feature) {
>                     OpenLayers.Util.getElement('apiary').innerHTML =
> "<strong>Apiary_id:</strong>" + feature.fid + " <strong>Geometry:</strong>"
> + feature.geometry + ":" + feature.attributes[0] + ":" +
> feature.attributes[1] + ":" + feature.attributes[2];
>                     }
> I can get at the feature.fid and feature.geometry, but calls to
> feature.attributes[n] return "undefined" (I have also tried
> "feature.data[n]".
>
> Any pointers appreciated.
>
> Robert Sanson
>
> >>> Christopher Schmidt <crschmidt at metacarta.com> 3/06/2008 2:21 a.m. >>>
> On Mon, Jun 02, 2008 at 09:38:34AM +0200, Eric Lemoine wrote:
> > On Mon, Jun 2, 2008 at 9:03 AM,  <bartvde at osgis.nl> wrote:
> > > Hi list,
> > >
> > > why does an OpenLayers.Feature.Vector instance have both "data" and
> > > "attributes" properties, which contain the same arrays AFAICT?
> >
> > I may be wrong but I'd say: "historical reasons" [*].
>
> Yes.
>
> Regards,
> --
> Christopher Schmidt
> MetaCarta
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