View Full Version : Ajax autocomplete combobox

24 May 2007, 5:00 PM
I've just started using Ext, and I love the ajax autocomplete combobox!!

I've got the Live Search example working, and I need help to add a type ahead feature to filter the ajax returned data from JSON. I'm using a asp.net and call web service method to retun the JSON data. The web services return all employee from database.

Below is my code,

<script type="text/javascript">

var ds = new Ext.data.Store({
proxy: new Ext.data.HttpProxy({
url: 'svc_employee.aspx'
reader: new Ext.data.JsonReader({
root: 'Employees',
id: 'ID'
}, [
{name: 'ID', mapping: 'ID', type: 'int'},
{name: 'Name', mapping: 'Name', type: 'string'},
{name: 'Title', mapping: 'Title', type: 'string'}
// Custom rendering Template
var resultTpl = new Ext.Template(
'<div class="search-item">',

var search = new Ext.form.ComboBox({
store: ds,
typeAhead: true,
loadingText: 'Searching...',
width: 300,
tpl: resultTpl

// apply it to the exsting input element
How can I apply a type ahead filtering function?

24 May 2007, 6:10 PM
This is my combo config that does work out of the box. It's part of grid editor so I hope you extract the required info from it:

editor = new Ext.grid.GridEditor(new Ext.form.ComboBox({
store: new Ext.data.Store({
baseParams: {
requestID: 'getComboRows'
, objName: field.alias || field.name
, db: 'prs_system'
, proxy: new Ext.data.HttpProxy({method:'post', url:'/ajax.php'})
, reader: new Ext.data.JsonReader({
root: 'records'
, totalProperty: 'totalCount'
, id: 'valueField'
}, [{name:'valueField'},{name:'displayField'}])
, listeners: {select:{scope:grid.store, fn:function(combo, record, index) {
var srcRecord = combo.store.getById(combo.getValue());
if(srcRecord) {
var displayField = srcRecord.get('displayField');
var dstRecord = grid.activeEditor.record;
if(dstRecord) {
dstRecord.set(field.alias || field.name, displayField);
, mode:'remote'
, triggerAction: 'all'
, forceSelection: true
// , typeAhead: true
, minChars: this.filterChars
, editable: true
, valueField: 'valueField'
, displayField: 'displayField'
, pageSize: 12
, minListWidth: 250
, minChars: 3