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<p class=MsoNormal>Hi there I was wondering if someone could give me some
advice on a problem I am having populating a combobox in GeoExt.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>First of all I have feature attribute store of my data given
by the following code called in when the page initialises:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>layer_attribute_store = new GeoExt.data.AttributeStore({<o:p></o:p></p>
<p class=MsoNormal> url:
"http://localhost:8080/geoserver/wfs?service=wfs&version=1.1.0&request=DescribeFeatureType&typeName=cite:USA"
<o:p></o:p></p>
<p class=MsoNormal> });<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> layer_attribute_store.load();<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>This store is then loaded into a combobox defined below:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>var themeCriteria = new Ext.form.ComboBox({<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> fieldLabel:
'Criteria',<o:p></o:p></p>
<p class=MsoNormal> width: 130,<o:p></o:p></p>
<p class=MsoNormal> id:
'criteriaId',<o:p></o:p></p>
<p class=MsoNormal> name:
'criteria',<o:p></o:p></p>
<p class=MsoNormal> hiddenName:
'criteria',<o:p></o:p></p>
<p class=MsoNormal> forceSelection:true,<o:p></o:p></p>
<p class=MsoNormal> editable:false,<o:p></o:p></p>
<p class=MsoNormal> triggerAction:
'all',<o:p></o:p></p>
<p class=MsoNormal> mode:
'local',<o:p></o:p></p>
<p class=MsoNormal> store:
layer_attribute_store,<o:p></o:p></p>
<p class=MsoNormal> valueField:
'name',<o:p></o:p></p>
<p class=MsoNormal> emptyText:
"Name",<o:p></o:p></p>
<p class=MsoNormal> triggerAction:
"all",<o:p></o:p></p>
<p class=MsoNormal> displayField:
"name"<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> });<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The combobox is then placed in a panel within a Viewport
using normal apporach and placing in "items" catagory:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>
items: [themeCriteria]<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>This all works fine and it displays the attributes within
the layer. Later however I want the use to be able to click on a radio button
to change the layer name and subsequently update the combobox with the new
layer attributes. Now I can get the layer name to change using the listner
method in the layertree as shown in the examples and I can update the
layer_attribute_store using the following:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> layer_attribute_store = new GeoExt.data.AttributeStore({<o:p></o:p></p>
<p class=MsoNormal> url:
"http://localhost:8080/geoserver/wfs?service=wfs&version=1.1.0&request=DescribeFeatureType&typeName="
+ node.layer.name<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> });<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> layer_attribute_store.load();<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>For the life of me, however, I cannot get this new store to
render into the combobox that is already created? I'm guessing there should be
a simple piece of code that would just refresh the contents of the combobox
accordingly but I've been searching online and trying different ways now for 2
weeks and still at a loss to a solution. If anyone has any ideas how to solve
this it would be a great help.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thank you.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Kind regards,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Barry<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Email: be208@exeter.ac.uk<o:p></o:p></p>
</div>
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