Not able to select item by typing inside combobox - extjs

Question

This is my second time I am posting the same question as did not get answer till now.
I have a combobox and following is the store (ExtJs 2.3)
Combo Store:
Assignments
Meetings
Salary
I am filtering the combo on key up so that 'Salary' item wont be diaplyed int he list and it works fine.
But as the combobox item can also be selected by typing iside combobox, I have written following code on keyUp and beforeQuery of the combo.
keyup: function () {
combo2.selectedIndex = -1;
combo2.store.clearFilter();
combo2.store.filterBy(function (record) {
return record.get('text') != 'Salary';
});
}
beforequery: function (queryEvent) {
var combo1Val = combo.value; // Give the selected value correctly
if (combo1Val == 'Student' && combo2.store.isFiltered())
{
queryEvent.combo.expand();
queryEvent.combo.onLoad();
return false;
}
return true;
}
This filters out the 'Salary' option successfully, but now I am not able to select any option by typing the inside combobox as before i.e. now if I type 'As', it is not selecting 'Assignment' option anymore. What I am doing wrong here?

Answer 1

Have you tried using typeAhead?
something like this--
{
xtype: 'combobox',
name: 'address',
id: 'addressId',
store: Ext.create('myStore'),
valueField: 'fullAddress',
displayField: 'name',
minChars: 2,
typeAheadDelay: 100,
typeAhead: true,
emptyText: 'Select Address',
listEmptyText: 'error loading list!',
width: 300
}