[OpenLayers-Dev] Able to delete/ move feature and save it without problems, but upon refreshing the data, it is the same as before the delete/ move.

[Christopher Schmidt]

On Sun, Mar 08, 2009 at 04:57:49PM +0200, Sunder Raj Abbai Naidoo wrote:
> Good Day Everyone
> 
> I am busy working on a project that requires a feature to be added, moved and deleted.  The "add feature" functionality works i.e. able to add a feature, save it and upon refresh the feature is displayed. The "move feature" functionality is able to move a feature and save without any bugs, but upon refreshing the data the feature is in the old location. The "delete feature" functionality is able to delete a feature and save without any bugs, but upon refreshing the data the feature is displayed. Below is the coding that I am using. Your help is appreciated.

OpenLayers 2.7's WFS-T support does not support modification or deletes.
This missing functionality will be fixed in your current code sometime
before the 2.8 release (#1787), but it is recommended to use the WFS
protocol for all access of this sort, which is already in trunk.

http://openlayers.org/dev/examples/wfs-protocol-transactions.html


> Definition of WFS
> var cities = new OpenLayers.Layer.WFS(
>     "Cities",
>     "http://10.128.78.27:8080/geoserver/wfs",
>     {typename: topp:tasmania_cities'},
>     {featureNS: http://www.openplans.org/topp',
>      extractAttributes: true});
> cities.style = OpenLayers.Util.applyDefaults({strokeColor: "#0000ff"}, 
>                OpenLayers.Feature.Vector.style["default"]);
> 
> Defination of Add, Edit, Del, Save.
> 
> function deleteFeature(geometry)
> {
>   this.state = OpenLayers.State.DELETE;
>   this.layer.removeFeatures(geometry);
>   this.renderIntent = "select";
> }
> 
> var drawPoint = new OpenLayers.Control.DrawFeature(
>                     cities, OpenLayers.Handler.Point,
>                    {displayClass: 'olControlAddFeaturePoint'});
> drawPoint.featureAdded = function(feature) {
>   feature.layer.eraseFeatures([feature]);
>   // cast to point
>   feature.geometry = new OpenLayers.Geometry.MultiPoint(feature.geometry);
>   feature.style.strokeColor = "#0000ff";
>   feature.state = OpenLayers.State.INSERT;
>   feature.layer.drawFeature(feature);
> }
> 
> var edit = new OpenLayers.Control.ModifyFeature(cities, 
>     {title: "Modify Feature", 
>      displayClass: "olControlModifyFeature"});
> 
> var save  = new OpenLayers.Control.Button(
>     {title: "Save Changes",
>      trigger: OpenLayers.Function.bind(cities.commit, cities),
>      displayClass: "olControlSaveFeatures"});
> 
> var del = new OpenLayers.Control.SelectFeature(cities,
>     {title: "Delete Feature",
>      onSelect: deleteFeature,
>      displayClass: "olControlDeleteFeature"});
> 
> 
> Kind Regards,
>  
> Sunder Raj Abbai Naidoo
> Specialist: Analyst Programmer
> IT Consulting; Solution Delivery                           
> +27 (0)12 470 1584 (Office)
> +27 (0)12 470 1456 (Fax)
> +27 (0)83 461 3397 (Mobile)
> 
> 
> 
> .
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-- 
Christopher Schmidt
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