[Users] Load combo, FeatureStore and filter values

[Jorge Lopez]

Hello everyone:



I am driving mad with this problem. I am doing a web application with
OpenLayers, ExtJs and GeoExt and the simple fact to load values in a combo
have become hard.

Step1: I have defined a featurestore that stores the records from a layer
in Geoserver. No problem to load these items in a GeoExt gridPanel. This
store has been generated with this code:



----

store = new GeoExt.data.FeatureStore({

                        layer: wfslayer,

                        fields: [

                             {name: 'PLANT', type: 'string'},

                             {name: ‘COUNTRY’, type: ‘string’},

                            {name: ‘STATUS', type: 'string'},

                            {name: 'long', type:
'float'},

                            {name: 'lat', type: 'float'},

                        ],

                            proxy: new GeoExt.data.ProtocolProxy({

                                    protocol: new OpenLayers.Protocol.WFS({

                                 //version: "1.0.0",

                                               srsName: 'EPSG:900913',

                                             url: "
http://localhost:8080/geoserver/wfs",

                                             featureNS: '
http://localhost:8080/wfs',

                                               featurePrefix: nomPrefix,

                                               featureType: nomLayer,

                                               geometryName: nomGeometry,

                                               schema:
http://localhost:8080/geoserver/wfs?service=WFS&request=DescribeFeatureType&typename=lonlat22
"


})

                                                           }),

                                               autoLoad: true

                                   });

--



This store has records with fields (COUNTRY) that contains repeated values
and I would like to filter that store by this field: COUNTRY. For that, I
have created a ComboBox and I am trying to show only “no repeated” values
but no success.



var combo1=new Ext.form.ComboBox({

                                               fieldLabel:'Filtro Pais',

                                               name:'cmb-P',

                                               forceSelection: true,

                                               store: store,

                                               emptyText:'Escoge un país',

                                               triggerAction: 'all',

                                               //allQuery: 'DISTINCT',

                                               editable:false,

                                               displayField:'COUNTRY',

                                               valueField: 'COUNTRY'

                                   });

This combo shows a list of all (repeated) values from store. This a
question of ExtJS forum but I would appreciate if anyone knew how to filter
it out.



Once a country is selected from combo, I would like to be shown the STATUS
associated to that selected COUNTRY. This is a question of anidated combos
but I don’t know how to ‘featurefilter’ config tag would be entered in this
problem.



Any ideas?



Thanks in advanced



Jorge
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