Change Valuefield Config On Ext-js Combobox?

I have a combobox on a form where I need to reset its store along with the 'displayField' and 'valueField' configs. Resetting the store via cmb.bindStore(newStore) works great. Set

Solution 1:

You are nearly there but you where looking at the wrong property cause valueField is not your issue, it is displayField. Your exact problem are preconfigured and cached properties. The first is the display template the second is the picker instance. You need to override the template and remove the picker instance. Here's a working snipped (JSFiddle)

In the example I added a second trigger with a cross. Hit it and the ComboBox get the new values. I recommend you to create your own component for this by extending from ComboBox and wrap all into a reconfigure method that would expect tree parameters.

Ext.onReady(function() {
    // The data store containing the list of statesvar states = Ext.create('Ext.data.Store', {
        fields: ['abbr', 'name'],
        data : [
            {"abbr":"AL1", "name":"Alabama1"},
            {"abbr":"AK1", "name":"Alaska1"},
            {"abbr":"AZ1", "name":"Arizona1"}
            //...
        ]
    });

    var comp = Ext.create('Ext.form.field.ComboBox', {
        fieldLabel: 'Choose State',
        id: 'combo-ident',
        trigger2Cls: 'x-form-clear-trigger',
        onTrigger2Click: function (args) {
            var comp = Ext.getCmp('combo-ident');
            comp.clearValue();
            comp.bindStore(Ext.create('Ext.data.Store', {
                fields : [ {
                    name : 'abbr',
                    type : 'string'
                }, {
                    name : 'name',
                    type : 'string'
                }, {
                    name : 'slogan',
                    type : 'string'
                } ],
                data : [ {
                    "abbr" : "AL",
                    "name" : "Alabama",
                    "slogan" : "The Heart of Dixie"
                }, {
                    "abbr" : "AK",
                    "name" : "Alaska",
                    "slogan" : "The Land of the Midnight Sun"
                }, {
                    "abbr" : "AZ",
                    "name" : "Arizona",
                    "slogan" : "The Grand Canyon State"
                }, {
                    "abbr" : "AR",
                    "name" : "Arkansas",
                    "slogan" : "The Natural State"
                }, ]
            }));

            comp.displayField = 'abbr';
            comp.valueField = 'name';
            comp.displayTpl = newExt.XTemplate(
                '<tpl for=".">' +
                    '{[typeof values === "string" ? values : values["' + comp.displayField + '"]]}' +
                    '<tpl if="xindex < xcount">' + comp.delimiter + '</tpl>' +
                '</tpl>'
            );
            comp.picker = null;
        },
        store: states,
        queryMode: 'local',
        displayField: 'name',
        valueField: 'abbr',
        renderTo: Ext.getBody()
    });
    comp.on('select', function(){ console.log(arguments); console.log(arguments[0].getSubmitValue()); })

});

Solution 2:

I am not sure it is possible to reconfigure the combo box this way, but perhaps you can create another combobox with a different store and valueField. Hide/destroy one or the other based on your logic.