[CLOSED] MessageBus publish method

**gets_gui** · Apr 24, 2012, 5:04 PM

Hi,

I have a problem for MessageBus publish.

publisher side:

protected void PublishEvent(object sender, DirectEventArgs e)
    {
        MessageBus.Default.Publish("App.Refresh", "It is an event from server side");
    }

subscribe side:

protected void ServerBusEvent(object sender, DirectEventArgs e)
{
...
}

<MessageBusDirectEvents>
            <ext:MessageBusDirectEvent Name="App.Refresh" OnEvent="ServerBusEvent">
                <ExtraParams>
                    <ext:Parameter Name="message" Value="data" Mode="Raw" />
                </ExtraParams>
            </ext:MessageBusDirectEvent>
        </MessageBusDirectEvents>

The code works (ServerBusEvent method will get invoked) if the publisher code is in the aspx, it does not work when it is sent from a controller method as following:

public string Upload()
{
...
MessageBus.Default.Publish("App.Refresh", "It is an event from server side");
return ...
}

Please advise.

**Vladimir** · Apr 24, 2012, 10:09 PM

At this moment, scripts are not registered automatically in the controller action, please do it manually

public ActionResult ClickTest()
        {
            AjaxResult r = new AjaxResult();


            MessageBus.Default.Publish("App.Refresh", "It is an event from server side");
            r.Script = MessageBus.Default.GetGeneratedScripts();


            return r;
        }

**gets_gui** · Apr 25, 2012, 3:15 PM

I tried the way you suggested, it does not work.
It seems that the

MessageBus.Default.GetGeneratedScripts();

returns an empty string.
BTW, I have the latest code from SVN.

**Vladimir** · Apr 25, 2012, 3:39 PM

I cannot reproduce it, please provide your test case

**gets_gui** · Apr 25, 2012, 5:28 PM

Index.aspx

<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<dynamic>" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<script runat="server">

   
    protected void PublishEvent(object sender, DirectEventArgs e)
    {
        MessageBus.Default.Publish("App.Refresh", "It is an event from server side");
    }



   protected void ServerBusEvent(object sender, DirectEventArgs e)
    {

        var Html = e.ExtraParams["message"];

    }


</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title id="title2">Jefferies Global Electronic Trading Service - Reconcile Blocks
    </title>   
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
    <link rel="stylesheet" type="text/css" href="/Content/main.css" />
    <script type="text/javascript">
        var Upload = function () {
            App.formPanel.getForm().url = "/Home/Upload";
            App.formPanel.getForm().submit();
        };    
    </script>
    <ext:ResourcePlaceHolder ID="ResourcePlaceHolder1" runat="server" />

</head>
<body >
    <ext:ResourceManager ID="ResourceManager1" runat="server" IDMode="Explicit" />
    
    <ext:FormPanel ID="formPanel" runat="server" Layout="TableLayout" FileUpload="True">
        <MessageBusDirectEvents>
            <ext:MessageBusDirectEvent Name="App.Refresh" OnEvent="ServerBusEvent">
                <ExtraParams>
                    <ext:Parameter Name="message" Value="data" Mode="Raw" />
                </ExtraParams>
            </ext:MessageBusDirectEvent>
        </MessageBusDirectEvents>
        <Items>
            <ext:Button ID="Button1" runat="server" Text="Publish from aspx server">
                <directevents>
                    <Click OnEvent="PublishEvent" />
                </directevents>
            </ext:Button>
            <ext:FileUploadField ID="fileUploadField" Name="upload" runat="server" Width="200" Icon="Attach" ButtonText="Upload...">
                <listeners>                                                                            
                    <Change Handler="Upload()"/>
                </listeners>
            </ext:FileUploadField>
        </Items>
    </ext:FormPanel>
</body>
</html>

controller code:

using System.Web.Mvc;

namespace Ext.Net.MVC.Demo.Controllers
{
    [HandleError]
    public class HomeController : System.Web.Mvc.Controller
    {
       
        public ActionResult Index()
        {
 

            return this.View();
        }
        

     
        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult Upload()
        {
            AjaxResult ajaxResult = new AjaxResult();
            ajaxResult.IsUpload = true;
            MessageBus.Default.Publish("App.Refresh", "It is an event from controller");
            ajaxResult.Script = MessageBus.Default.GetGeneratedScripts();
            
            return ajaxResult;
        }

    }
}

**Daniil** · Apr 25, 2012, 9:27 PM

Hi,

FormPanel doesn't execute a script from a response, you should run it manually within a submit callback.

Example

App.formPanel.getForm().submit({
    callback : function (result) {
        eval(result.script);
    }
});

Also please use FormResult instead of AjaxResult.

**gets_gui** · Apr 26, 2012, 1:19 PM

Daniil, thank you for the reply.
The FormResult does not exist in v2 and I guess we have to stick with AjaxResult.
I believe there maybe some bugs/issues with form.
However, I have the following example which has the same problem (the script is empty) without form.

<%@ Page Language="C#" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<script runat="server">

   
    protected void PublishEvent(object sender, DirectEventArgs e)
    {
        MessageBus.Default.Publish("App.Refresh", "It is an event from server side");
    }



   protected void ServerBusEvent(object sender, DirectEventArgs e)
    {

        var Html = e.ExtraParams["message"];

    }


</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title id="title2">Jefferies Global Electronic Trading Service - Reconcile Blocks
    </title>   
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
    <link rel="stylesheet" type="text/css" href="/Content/main.css" />
    <ext:ResourcePlaceHolder ID="ResourcePlaceHolder1" runat="server" />

</head>
<body >
    <ext:ResourceManager ID="ResourceManager1" runat="server" IDMode="Explicit" />
    
    <ext:Panel ID="Panel2" runat="server">

        <MessageBusDirectEvents>
            <ext:MessageBusDirectEvent Name="App.Refresh" OnEvent="ServerBusEvent">
                <ExtraParams>
                    <ext:Parameter Name="message" Value="data" Mode="Raw" />
                </ExtraParams>
            </ext:MessageBusDirectEvent>
        </MessageBusDirectEvents>
        <Buttons>
            <ext:Button ID="Button1" runat="server" Text="Publish from aspx server">
                <directevents>
                    <%--<Click OnEvent="PublishEvent" /> --%>
                    <Click Url="/Home/Upload" />
                </directevents>
            </ext:Button>
        </Buttons>
    </ext:Panel>
</body>
</html>


using System.Web.Mvc;

namespace Ext.Net.MVC.Demo.Controllers
{
    [HandleError]
    public class HomeController : System.Web.Mvc.Controller
    {
       
        public ActionResult Index()
        {
 

            return this.View();
        }


        public ActionResult Upload()
        {
            AjaxResult result = new AjaxResult();
            result.IsUpload = true;
            MessageBus.Default.Publish("App.Refresh", "It is an event from controller");
            result.Script = MessageBus.Default.GetGeneratedScripts();
            return result;
        }

    }
}

**Daniil** · Apr 26, 2012, 2:17 PM

My fault, I meant "FormPanelResult". Generally, any FormPanel actions like submit expects a FormPanelResult response.

Regarding to the problem with

result.Script = MessageBus.Default.GetGeneratedScripts();

It seems to don't work with

result.IsUpload = true;

We are investigating further.

**Daniil** · Apr 26, 2012, 4:32 PM

After updating from SVN the following example will work as expected.

Example View

<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage" %>

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Ext.Net.MVC v2 Example</title>
</head>
<body>
    <ext:ResourceManager runat="server" />
    <ext:FormPanel runat="server"> 
        <MessageBusListeners>
            <ext:MessageBusListener Name="App.Refresh" Handler="console.log(data);" />
        </MessageBusListeners>
        <Items>
            <ext:FileUploadField runat="server" />
        </Items>
        <Buttons>
            <ext:Button runat="server" Text="Publish from aspx server">
                <DirectEvents>
                    <Click Url="/Test/Upload" />
                </DirectEvents>
            </ext:Button>
        </Buttons>
    </ext:FormPanel>
</body>
</html>

Example Controller Action

public ActionResult Upload()
{
    AjaxResult result = new AjaxResult();
    result.IsUpload = true;
    MessageBus.Default.Publish("App.Refresh", "It is an event from controller");
    return result;
}

**gets_gui** · Apr 26, 2012, 5:48 PM

Your example works fine and it is very nice that we don't need to register the script in controller.

However, I changed back to the form submit and it doesn't work any more. :(.
I tried to return FormPanelResult instead of AjaxResult, it didn't make any difference.
And I aslo try to add call back in the submit (BTW, there is no result.script any more) and it didn't help.

<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage" %>

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Ext.Net.MVC v2 Example</title>
    <script type="text/javascript">
        var Upload = function () {
            App.FormPanel1.getForm().url = "/Home/Upload";
            App.FormPanel1.getForm().submit();
        };
    </script>
</head>
<body>
    <ext:ResourceManager ID="ResourceManager1" runat="server" />
    <ext:FormPanel ID="FormPanel1" runat="server"> 
        <MessageBusListeners> 
            <ext:MessageBusListener Name="App.Refresh" Handler="console.log(data);" />  
        </MessageBusListeners> 
        <Items>
            <ext:FileUploadField ID="FileUploadField1" runat="server" />
        </Items>
        <Buttons>
            <ext:Button ID="Button1" runat="server" Text="Publish from aspx server">
                <%--<DirectEvents>
                    <Click Url="/Home/Upload" />
                </DirectEvents>--%>
                <Listeners>
                    <Click Handler="Upload()"/>
                </Listeners>
            </ext:Button>
        </Buttons>
    </ext:FormPanel>
</body>
</html>

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