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    Default Unanswered: Ext TreePanel: How to add Child Nodes to the expanded node ?

    Unanswered: Ext TreePanel: How to add Child Nodes to the expanded node ?


    Hi,
    I am trying to create a Tree from Ext.tree.Panel with JSON data.

    My JSON
    {
    "employees": [
    { "firstName":"John" , "lastName":"Doe" },
    { "firstName":"Anna" , "lastName":"Smith" },
    { "firstName":"Peter" , "lastName":"Jones" }
    ]
    }

    I want the first level nodes to be the "firstName: from the above JSON. I am able to achieve this but when any of the node is expanded the same nodes are displayed as children to the expanded node shown below.

    - John

    ---> + John
    ---> + Anna
    ---> + Peter
    + Anna
    + Peter


    When any of the node is expanded I want to add children from another JSON file. but here the problem is before adding the children to the node i can see the child nodes attached as above.

    Is there any way to avoid this behavior ?

    Code Snippet

    My TreePanel:

    Ext.define('MyApp.view.MyTreePanel', {
    extend: 'Ext.tree.Panel',
    height: 439,
    width: 400,
    title: 'My Tree Panel',
    store: 'MyTreeStore',
    displayField: 'firstName',
    rootVisible: false,
    initComponent: function() {
    var me = this;
    Ext.applyIf(me, {
    viewConfig: {
    }
    });
    me.callParent(arguments);
    }
    });

    TreeStore:

    Ext.define('MyApp.store.MyTreeStore', {
    extend: 'Ext.data.TreeStore',
    requires: [
    'MyApp.model.MyModel'
    ],
    constructor: function(cfg) {
    var me = this;
    cfg = cfg || {};
    me.callParent([Ext.apply({
    autoLoad: true,
    autoSync: true,
    model: 'MyApp.model.MyModel',
    storeId: 'MyTreeStore',
    proxy: {
    type: 'ajax',
    url: 'employees.json',
    reader: {
    type: 'json',
    root: 'employees'
    }
    }
    }, cfg)]);
    }
    });

    Model:

    Ext.define('MyApp.model.MyModel', {
    extend: 'Ext.data.Model',
    fields: [
    {
    name: 'firstName'
    }
    ]
    });

    Thanks in advance....


  2. #2
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    Any chance you can abandon this thread and post your related questions back to your original thread:
    http://www.sencha.com/forum/showthread.php?263170

  3. #3
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    Thanks Slemmon...
    I found the solution for the Thread you are referring to. Now I face the above mentioned problem. So i cannot make this thread abandon.

    Does any one have solution for the above problem ? Please share.

    Thanks in advance..

  4. #4
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    Thanks..
    I solved the above problem by overriding the doRequest() method of TreeStore.

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