[CLOSED] Store seems empty on DocumentReady

  1. #1

    [CLOSED] Store seems empty on DocumentReady

    Hi,

    This is probably a basic configuration issue that I'm facing. A Store control appears empty within the DocumentReady event listener. Once the handler code has executed, the Store data can be accessed normally.

    <%@ Page Language="C#" %>
    
    <%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
    <script runat="server">     
        private object[] TestData
        {
            get
            {
                var now = DateTime.Now;
                return new object[]
                {
                    new object[] { "3m Co", 71.72, 0.02, 0.03, now },
                    new object[] { "Alcoa Inc", 29.01, 0.42, 1.47, now },
                    new object[] { "Altria Group Inc", 83.81, 0.28, 0.34, now },
                    new object[] { "American Express Company", 52.55, 0.01, 0.02, now },
                    new object[] { "American International Group, Inc.", 64.13, 0.31, 0.49, now },
                    new object[] { "AT&T Inc.", 31.61, -0.48, -1.54, now },
                    new object[] { "Boeing Co.", 75.43, 0.53, 0.71, now },
                    new object[] { "Caterpillar Inc.", 67.27, 0.92, 1.39, now },
                    new object[] { "Citigroup, Inc.", 49.37, 0.02, 0.04, now },
                    new object[] { "E.I. du Pont de Nemours and Company", 40.48, 0.51, 1.28, now },
                    new object[] { "Exxon Mobil Corp", 68.1, -0.43, -0.64, now },
                    new object[] { "General Electric Company", 34.14, -0.08, -0.23, now },
                    new object[] { "Government Motors Corporation", 30.27, 1.09, 3.74, now },
                    new object[] { "Hewlett-Packard Co.", 36.53, -0.03, -0.08, now },
                    new object[] { "Honeywell Intl Inc", 38.77, 0.05, 0.13, now },
                    new object[] { "Intel Corporation", 19.88, 0.31, 1.58, now },
                    new object[] { "International Business Machines", 81.41, 0.44, 0.54, now },
                    new object[] { "Johnson & Johnson", 64.72, 0.06, 0.09, now },
                    new object[] { "JP Morgan & Chase & Co", 45.73, 0.07, 0.15, now },
                    new object[] { "McDonald\"s Corporation", 36.76, 0.86, 2.40, now },
                    new object[] { "Merck & Co., Inc.", 40.96, 0.41, 1.01, now },
                    new object[] { "Microsoft Corporation", 25.84, 0.14, 0.54, now },
                    new object[] { "Pfizer Inc", 27.96, 0.4, 1.45, now },
                    new object[] { "The Coca-Cola Company", 45.07, 0.26, 0.58, now },
                    new object[] { "The Home Depot, Inc.", 34.64, 0.35, 1.02, now },
                    new object[] { "The Procter & Gamble Company", 61.91, 0.01, 0.02, now },
                    new object[] { "United Technologies Corporation", 63.26, 0.55, 0.88, now },
                    new object[] { "Verizon Communications", 35.57, 0.39, 1.11, now },
                    new object[] { "Wal-Mart Stores, Inc.", 45.45, 0.73, 1.63, now }
                };
            }
        }
    
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!X.IsAjaxRequest)
            {
                DataBind();
            }
        }
    
        private void DataBind()
        {
            this.Store1.DataSource = this.TestData;
            this.Store1.DataBind();
        }
    </script>
    
    <script type="text/javascript">
        var onClick = function () {
            var store = Ext.StoreMgr.get("Store1");
            var length = store.data.length;
            Ext.Msg.alert("Prompt", "Store data length is " + length);
        };
    
        var onDocumentReady = function () {
            var store = Ext.StoreMgr.get("Store1");
            var length = store.data.length;
            Label1.outerText = "Store data length is " + length;
        };
    </script>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head id="Head1" runat="server">
        <title>Ext.Net 3.x</title>
        <ext:ResourcePlaceHolder ID="ResourcePlaceHolder1" runat="server" Mode="Script" />
        <ext:ResourcePlaceHolder ID="ResourcePlaceHolder2" runat="server" Mode="Style" />
    </head>
    <body>
        <form id="Form1" runat="server">
            <ext:ResourceManager ID="ResourceManager1" runat="server">
                <Listeners>
                    <DocumentReady Fn="onDocumentReady"></DocumentReady>
                </Listeners>
            </ext:ResourceManager>
            <ext:Viewport runat="server" Layout="FitLayout">
                <Items>
                    <ext:FormPanel runat="server" ID="FormPanel1">
                        <Items>
                            <ext:ComboBox ID="ComboBox1" runat="server" DisplayField="company" ValueField="company"
                                SelectOnFocus="true" EmptyText="Select Company..." QueryMode="Local">
                                <Store>
                                    <ext:Store ID="Store1" runat="server" AutoLoad="true">
                                        <Model>
                                            <ext:Model ID="Model1" runat="server" IDProperty="company">
                                                <Fields>
                                                    <ext:ModelField Name="company" />
                                                    <ext:ModelField Name="price" Type="Float" />
                                                    <ext:ModelField Name="change" Type="Float" />
                                                    <ext:ModelField Name="pctChange" Type="Float" />
                                                    <ext:ModelField Name="lastChange" Type="Date" />
                                                </Fields>
                                            </ext:Model>
                                        </Model>
                                    </ext:Store>
                                </Store>
                            </ext:ComboBox>
                            <ext:Label runat="server" ID="Label1"></ext:Label>
                        </Items>
                        <TopBar>
                            <ext:Toolbar runat="server">
                                <Items>
                                    <ext:Button runat="server" Text="Test Store">
                                        <Listeners>
                                            <Click Fn="onClick"></Click>
                                        </Listeners>
                                    </ext:Button>
                                </Items>
                            </ext:Toolbar>
                        </TopBar>
                    </ext:FormPanel>
                </Items>
            </ext:Viewport>
        </form>
    </body>
    </html>
    Last edited by Daniil; Aug 25, 2015 at 6:24 AM. Reason: [CLOSED]
  2. #2
    Hi Vadym,

    A Store's Data would result in a desired behavior.
    this.Store1.Data = this.TestData;
    instead of
    this.Store1.DataSource = this.TestData;
    In this case a Store's is rendered with inline data which goes to the Store right on its creation.
    http://docs.sencha.com/extjs/5.1/5.1...Store-cfg-data

    But Store's data binding via .Data bypasses a ModelField's configuration like ServerMapping. A bit more details on the difference between .Data and .DataSource can be found here.
    http://forums.ext.net/showthread.php...ll=1#post85326

    As for .DataSource, it is rendered to client as data of Store's MemoryProxy. Then it is auto loaded to Store after creation. There is a default auto load delay. It is why you see the Store empty on your setup.
    http://docs.sencha.com/extjs/5.1/5.1...-autoLoadDelay

    In any way, I think the best way to access a Store's data is inside its Load listener.
  3. #3
    Thanks for the insightful explanation, Daniil! Please close this thread.

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