Success! Looks like we've fixed this one. According to our records the fix was applied for EXTJS-8563 in
  1. #1
    Sencha Premium Member
    Join Date
    Mar 2012
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    andrewx is on a distinguished road


    Default Tree Duplicate Nodes

    Tree Duplicate Nodes

    Sorry if this has been reported, I tried to search but didn't see anything.

    REQUIRED INFORMATION Ext version tested:
    • Ext 4.2.0 rev 265
    Browser versions tested against:
    • Safari 5.1.2 (windows)
    • IE8
    • FF 18.0.1
    DOCTYPE tested against:
    • <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
    • When calling 'load' on the tree store after it has already been loaded once will duplicate Level 2 nodes. Additionally expanding the first Level 2 node will display the correct data, expanding the second Level 2 node will display the whole tree as a child.
    Steps to reproduce the problem:
    • Take the TreeGrid example and add a reload button that will simply call 'store.load()'
    The result that was expected:
    • Store to reload and data to remain the same (using the 'treegrid.json' file)
    The result that occurs instead:
    • Store reloads and duplicate nodes are created
    Test Case:
        name: 'app',
        appFolder: 'app',
        autoCreateViewport: false,
        requires: [
        controllers: [
        launch: function () {
            Ext.define('Task', {
                extend: '',
                fields: [
                { name: 'task', type: 'string' },
                { name: 'user', type: 'string' },
                { name: 'duration', type: 'string' },
                { name: 'done', type: 'boolean' }
            var store = Ext.create('', {
                model: 'Task',
                proxy: {
                    type: 'ajax',
                    url: 'treegrid.json'
                folderSort: true
            var tree = Ext.create('Ext.tree.Panel', {
                title: 'Core Team Projects',
                width: 500,
                height: 300,
                renderTo: Ext.getBody(),
                collapsible: true,
                useArrows: true,
                rootVisible: false,
                store: store,
                multiSelect: true,
                singleExpand: true,
                /* NEW CODE FOR BUG REPORT*/
                dockedItems: [{
                    xtype: 'toolbar',
                    dock: 'bottom',
                    items: [{
                        xtype: 'button',
                        text: 'Reload',
                        handler: function () {
                /* END NEW CODE FOR BUG REPORT*/
                //the 'columns' property is now 'headers'
                columns: [{
                    xtype: 'treecolumn', //this is so we know which column will show the tree
                    text: 'Task',
                    flex: 2,
                    sortable: true,
                    dataIndex: 'task'
                }, {
                    //we must use the templateheader component so we can use a custom tpl
                    xtype: 'templatecolumn',
                    text: 'Duration',
                    flex: 1,
                    sortable: true,
                    dataIndex: 'duration',
                    align: 'center',
                    //add in the custom tpl for the rows
                    tpl: Ext.create('Ext.XTemplate', '{duration:this.formatHours}', {
                        formatHours: function (v) {
                            if (v < 1) {
                                return Math.round(v * 60) + ' mins';
                            } else if (Math.floor(v) !== v) {
                                var min = v - Math.floor(v);
                                return Math.floor(v) + 'h ' + Math.round(min * 60) + 'm';
                            } else {
                                return v + ' hour' + (v === 1 ? '' : 's');
                }, {
                    text: 'Assigned To',
                    flex: 1,
                    dataIndex: 'user',
                    sortable: true
                }, {
                    text: 'Edit',
                    width: 40,
                    menuDisabled: true,
                    xtype: 'actioncolumn',
                    tooltip: 'Edit task',
                    align: 'center',
                    icon: '../simple-tasks/resources/images/edit_task.png',
                    handler: function (grid, rowIndex, colIndex, actionItem, event, record, row) {
                        Ext.Msg.alert('Editing' + (record.get('done') ? ' completed task' : ''), record.get('task'));
                    // Only leaf level tasks may be edited
                    isDisabled: function (view, rowIdx, colIdx, item, record) {
                        return !;

  2. #2
    Sencha Premium Member
    Join Date
    Jun 2009
    Vote Rating
    coolrb is on a distinguished road


    Default Not fixed : Duplicate tree node

    Not fixed : Duplicate tree node

    I am just scratching my head from last couple of days for this issue.

  3. #3
    Ext JS Premium Member
    Join Date
    Dec 2011
    Vote Rating
    nicolabaldo is on a distinguished road



    Any solution? I've got the same problem!

  4. #4
    Sencha User
    Join Date
    Feb 2013
    Vote Rating
    iwerks is on a distinguished road



    Did anyone find a fix to this problem. I'm running ExtJs 4.2.1 and have encountered this problem. The parent nodes are the child nodes unto themselves in an infinite loop. I have no idea what is causing this problem. Any help?

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