[Users] GeoExt.AttributeStore question

[Eric Lemoine]

On Wed, Oct 13, 2010 at 9:25 PM, Andrew Stewart
<Andrew.Stewart at reddeer.ca> wrote:
> I am trying to use a GeoExt.data.attribute store to populate the data field
> of an ext.form.combobox. I have tried to debug using firebird etc to see
> stuff inside neighbourhood_name_store below but it doesn't seem to be
> working properly. When I actually copy the request URL it performs the
> request correctly and I am trying to put the data field as the attribute
> from the request which is like-
>
> - <xs:complexType name="NeighbourhoodsType">
> - <xs:complexContent>
> - <xs:extension base="gmgml:NeighbourhoodsSubType">
> - <xs:sequence>
>   <xs:element name="NEIGHBOURHOODID" type="xs:int" />
>   <xs:element name="NEIGHBOURHOOD_NAME"
> type="gmgml:Neighbourhoods_NEIGHBOURHOOD_NAMEType" minOccurs="0" />
>   <xs:element name="LABEL_LINE1" type="gmgml:Neighbourhoods_LABEL_LINE1Type"
> minOccurs="0" />
>   <xs:element name="LABEL_LINE2" type="gmgml:Neighbourhoods_LABEL_LINE2Type"
> minOccurs="0" />
>   <xs:element name="LABEL_LINE3" type="gmgml:Neighbourhoods_LABEL_LINE3Type"
> minOccurs="0" />
>   <xs:element name="YearBuilt" type="gmgml:Neighbourhoods_YearBuiltType"
> minOccurs="0" />
>   <xs:element name="Geometry"
> type="gmgml:Polygon_Surface_MultiSurface_CompositeSurfacePropertyType"
> minOccurs="0" />
>   </xs:sequence>
>   </xs:extension>
>   </xs:complexContent>
>   </xs:complexType>
>
>
> Not sure why but it doesn't seem to be working, appreciate any assistance.

Some comments below.

>
> var neighbourhood_name_store = new GeoExt.data.AttributeStore({
>     url:
> "http://localhost/RedWFS/request.aspx?REQUEST=describeFeatureType&SERVICE=WFS&version=1.1.0&typename=Neighbourhoods"
>     });
>
>     neighbourhood_name_store.load();

In your case you need not load the store yourself, the combobox will
load it when needed.

>
>     alert(neighbourhood_name_store.feature);

Your AttribureStore doesn't work with a feature, so you shouldn't
expect store.feature to be defined. Binding a feature to an
AttributeStore corresponds to a specific use of AttributeStore.

>
>   //Type dropdown
> var neighbourhoodCombo = new Ext.form.ComboBox({
>      fieldLabel: 'Neighbourhood Name',
>      boxMaxWidth: 159,
>      name: 'neighbourhood_Name',
>      hiddenName: 'NEIGHBOURHOOD_NAME',
>      forceSelection: true,
>      store:neighbourhood_name_store,
>      valueField: 'NEIGHBOURHOOD_NAME',
>      emptyText: "NEIGHBOURHOOD_NAME",
>      displayField: "NEIGHBOURHOOD_NAME",
>      selectOnFocus: true
>      });

You cannot set valueField, emptyText and displayField to
"NEIGHBOURHOOD_NAME". The AttributeStore stores attribute records,
whose fields are "name", "type", etc (edit AttributeStore.js and
AttributeReader.js for more information). I think you may want to set
these properties to "name" instead.

Hope it helps,

-- 
Eric Lemoine

Camptocamp France SAS
Savoie Technolac, BP 352
73377 Le Bourget du Lac, Cedex

Tel : 00 33 4 79 44 44 96
Mail : eric.lemoine at camptocamp.com
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