1. #1
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    Default Answered: Using Examples

    Answered: Using Examples


    Sorry for mistakes in English.
    I am trying to use example from Drag and Drop betweens two TreePanels, but it isn`t working good. When I try to expand folders or drag, I receive error that 'internalId' is null or not object'.
    I`m using ASP.NET.
    It is code of webform
    Code:
    <%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="TestTree.WebForm1" %>
    <asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">
    </asp:Content>
    <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <link rel="stylesheet" type="text/css" href="js/resources/css/ext-all.css" />
        <!-- GC -->
    <script type="text/javascript" src="js/ext-all.js"></script>
    <style type="text/css">
    #tree, #tree2 {
        float: left;
        margin: 20px;
    }
    </style>
    <script type="text/javascript" language="javascript">
        Ext.require(['*']);
    
    
        Ext.onReady(function () {
            var store = Ext.create('Ext.data.TreeStore', {
                proxy: {
                    type: 'ajax',
                    url: 'aaa.php'
                },
                root: {
                    text: 'Ext JS',
                    id: 'src',
                    expanded: true
                },
                folderSort: true,
                sorters: [{
                    property: 'text',
                    direction: 'ASC'
                }]
            });
    
    
            var tree = Ext.create('Ext.tree.Panel', {
                id: 'tree',
                store: store,
                width: 250,
                height: 300,
                viewConfig: {
                    plugins: {
                        ptype: 'treeviewdragdrop',
                        appendOnly: true
                    }
                },
                renderTo: 'ftree'
            });
    
    
            var store2 = Ext.create('Ext.data.TreeStore', {
                proxy: {
                    type: 'ajax',
                    url: 'aaa.php'
                },
                root: {
                    text: 'Custom Ext JS',
                    id: 'src',
                    expanded: true,
                    children: []
                },
                folderSort: true,
                sorters: [{
                    property: 'text',
                    direction: 'ASC'
                }]
            });
    
    
            var tree2 = Ext.create('Ext.tree.Panel', {
                id: 'tree2',
                width: 250,
                height: 300,
                store: store2,
                viewConfig: {
                    plugins: {
                        ptype: 'treeviewdragdrop',
                        appendOnly: true
                    }
                },
                renderTo: 'ftree'
            });
        });
    </script>
        <asp:PlaceHolder ID="PlaceHolder1" runat="server"><div id="ftree" /></asp:PlaceHolder>
    </asp:Content>
    File `aaa.php` is copy of file 'get-nodes.php' from example. Can you explain me, where is error and how to fix it?

  2. If a node (not a leaf) has no children specified, it will try to load it via the tree store's proxy. If you give it an empty array, children : [], it shouldn't try to load children.

  3. #2
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    Default


    What Ext JS 4.x.x version are you using?
    Mitchell Simoens @SenchaMitch
    Sencha Inc, Senior Forum Manager
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  4. #3
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    Default


    4.1.1
    As I understand, problem is that, when node is expanded, tree is loaded again. How can I deny that?

  5. #4
    Sencha - Senior Forum Manager mitchellsimoens's Avatar
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      0  

    Default


    If a node (not a leaf) has no children specified, it will try to load it via the tree store's proxy. If you give it an empty array, children : [], it shouldn't try to load children.
    Mitchell Simoens @SenchaMitch
    Sencha Inc, Senior Forum Manager
    ________________
    Check out my GitHub, lots of nice things for Ext JS 4 and Sencha Touch 2
    https://github.com/mitchellsimoens

    Think my support is good? Get more personalized support via a support subscription. https://www.sencha.com/store/

    Need more help with your app? Hire Sencha Services services@sencha.com

    Want to learn Sencha Touch 2? Check out Sencha Touch in Action that is in print!

    When posting code, please use BBCode's CODE tags.

  6. #5
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    Default


    Thanks, problem is solved.

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