RE: Displaying Error Messages

[Balaji Saranathan]

Title: Message

Mike,

 

Thanks for your help. Setting it to Null didnt show me the message, but I guess I was erring somewhere. But ofcourse, I found the second approach more cleaner.

 

Regards

Bala

 

-----Original Message-----
From: Mike Kienenberger [mailto:[EMAIL PROTECTED]
Sent: Monday, August 15, 2005 12:05 PM
To: MyFaces Discussion; [EMAIL PROTECTED]
Subject: Re: Displaying Error Messages

You can either use "null" to specify a global error message, or you can set a binding on your "elementForm:elementTable" so that's it's available as a UIComponent element to your backing bean.   Once you've set up a binding, you can get the client id that way.

                          <h:dataTable id="elementTable"
                               binding="#{page.elementTableUIComponent}"

                facesContext.addMessage(elementTableUIComponent.getClientId(facesContext),
                    new FacesMessage(...

On 8/15/05, Balaji Saranathan <[EMAIL PROTECTED]> wrote:

Hi,

I'm trying to understand how to display error messages that are indication of some exception cases in the Backing Bean.

There is no validation involved, but I would like to show up an error message telling the user that a "Delete action on the table row " has failed.

I use the FacesContext.addMessage - but this takes the clientID as the argument. Is it always necessary to harcode this id in the Backing Bean?

My code looks like this
    <h:form id="elementForm">
        <h:message for="elementTable" showDetail ="true" showSummary= "true" errorStyle="color:red" />           
        <h :dataTable id= "elementTable"
                ……

And in the handler where the exception is thrown
      catch (NoObjectFoundException exception)
      {
         FacesContext.getCurrentInstance().addMessage("elementForm:elementTable",
                     new FacesMessage("The Object does not exist .Unable to delete the specified row. Please check the \n"

                     + "logs for detailed error message !!!" ));
         return null;
      }

Thanks
Balaji

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