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[OPEN] [#116] Problem to reset a combo

  1. #1
    Nov 11, 2010, 4:04 PM

    [OPEN] [#116] Problem to reset a combo

    instead of reset the combo, set the item (Arizona) that has ID = 0.
    I can not change the value to be 0.
    What do you advise me to do to fix this?


    <%@ Page Language="C#" %>
<%@ Import Namespace="System.Collections.Generic" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
  
        this.Store1.DataSource = new object[]
        {
            new object[] { 60, "Alabama", "The Heart of Dixie" },
            new object[] { 1, "Alaska", "The Land of the Midnight Sun" },
            new object[] { 0, "Arizona", "The Grand Canyon State" },
            new object[] { 3, "Arkansas", "The Natural State" }         
        };        
        this.Store1.DataBind();        
    }
   
</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>Basic Hello World Window - Ext.NET Examples</title>
    <link href="../../../../resources/css/examples.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="Form1" runat="server">
        <ext:ResourceManager ID="ResourceManager1" runat="server" />
        
        <ext:Button ID="Button1" runat="server" Text="Button #1">
                <Listeners>
                    <Click Handler="#{FormPanel1}.getForm().reset();" />
                </Listeners>
            </ext:Button>
        
        <ext:Store ID="Store1" runat="server">
            <Reader>
                <ext:ArrayReader>
                    <Fields>
                        <ext:RecordField Name="abbr" />
                        <ext:RecordField Name="state" />
                        <ext:RecordField Name="nick" />
                    </Fields>
                </ext:ArrayReader>
            </Reader>            
        </ext:Store> 
         <ext:Store ID="StoreStati" runat="server">
            <Reader>
                 <ext:JsonReader IDProperty="ID">
                    <Fields>
                     <ext:RecordField Name="ID" />  
                     <ext:RecordField Name="Name" />                    
                    </Fields>
                </ext:JsonReader>
            </Reader>
            <Listeners>
                <LoadException Handler="Ext.Msg.alert('Employees - Load failed', e.message || response.statusText);" />
            </Listeners>
        </ext:Store>
        <ext:FormPanel
            ID="FormPanel1" 
            runat="server"
            Width="400">
            <Items>            
             <ext:ComboBox 
                ID="ComboBox1" 
                runat="server" 
                StoreID="Store1" 
                Editable="false"
                DisplayField="state"
                ValueField="abbr"
                TypeAhead="true" 
                Mode="Local"
                ForceSelection="true"
                EmptyText="Select a state..."
                Resizable="true"
                SelectOnFocus="true"
                />  
            </Items>
       </ext:FormPanel>
  </form>
</body>
</html>
    Last edited by Daniil; Jan 04, 2013 at 12:48 PM. Reason: [OPEN] [#116]
  2. #2
    Nov 11, 2010, 4:54 PM
    Hi,

    Confirmed. It's a bug in the ComboBox's findRecord method. Thank you for the report.

    The bug happens because condition
    (0 == "")
    is true in JavaScript.

    For now please use either the different from zero 'abbr' or the following fix (see comment in .js).

    Fix
    <%@ Page Language="C#" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {

        this.ComboBox1.GetStore().DataSource = new object[]
        {
            new object[] { 60, "Alabama", "The Heart of Dixie" },
            new object[] { 1, "Alaska", "The Land of the Midnight Sun" },
            new object[] { 0, "Arizona", "The Grand Canyon State" },
            new object[] { 3, "Arkansas", "The Natural State" }        
        };
        this.ComboBox1.GetStore().DataBind();
    }
    
</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 Example</title>
    <ext:ResourcePlaceHolder runat="server" />

    <script type="text/javascript">
        Ext.form.ComboBox.override({
            findRecord : function(prop, value) {
                var record;
                if (this.store.getCount() > 0) {
                    this.store.each(function(r) {
                        if (r.data[prop] === value) { //instead of (r.data[prop] == value)
                            record = r;
                            return false;
                        }
                    });
                }
                return record;
            }
        });    
    </script>

</head>
<body>
    <form runat="server">
    <ext:ResourceManager runat="server" />
    <ext:ComboBox 
        ID="ComboBox1" 
        runat="server" 
        DisplayField="state"
        ValueField="abbr">
        <Store>
            <ext:Store runat="server">
                <Reader>
                    <ext:ArrayReader>
                        <Fields>
                            <ext:RecordField Name="abbr" />
                            <ext:RecordField Name="state" />
                            <ext:RecordField Name="nick" />
                        </Fields>
                    </ext:ArrayReader>
                </Reader>
            </ext:Store>
        </Store>
    </ext:ComboBox>
    <ext:Button runat="server" Text="Reset">
        <Listeners>
            <Click Handler="ComboBox1.reset();" />
        </Listeners>
    </ext:Button>
    </form>
</body>
</html>
  3. #3
    Dec 06, 2010, 8:00 PM
    The bug ticket has been opened by ExtJS team.
    http://www.sencha.com/forum/showthread.php?115576-ComboBox-s-findRecord()-bug

    The UNCLOSED ticket has been opened
    https://extnet.lighthouseapp.com/pro...o#ticket-249-1
    Last edited by Daniil; Dec 06, 2010 at 8:03 PM.
  4. #4
    Jan 04, 2013, 12:48 PM
    The Sencha ticket is still opened.

    But we decided to fix it on our side. So, it has been fixed in SVN. The fix will appear in the next v1.7 release.

    Created an Issue to monitor Sencha ticket.
    https://github.com/extnet/Ext.NET/issues/116

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