Show error msg alert

[richfaceman]

Hi All

I'm using following code to generate the Alert()  this code works to an extend.

<a4j:commandButton id="gI" value="Generate Invoice" action="#{categoryProduct.generateInvoice}"

                        oncomplete="if (#{categoryProduct.errorMsg != ''}) {

                        alert('#{categoryProduct.errorMsg}')

                              }else{

                              location.href='poss_main_screen.jsp';

                              } ">

  </a4j:commandButton>

The probem is,  this part of the code will not work why???     

}else{ location.href='poss_main_screen.jsp';  } ">

No matter what the status of 'errorMsg' is it still shows the alert.

Code in Bean file;

        errorMsg = "Your basket is empty"; else{

}

//code

if  (basketList.isEmpty()) {

}

[ilya40umov]

It does not work because categoryProduct.errorMsg is gotten only when a4j:commandButton was being rendered. Just try  oncomplete=alert('#{categoryProduct.errorMsg}'); and it will be alsways the same because it shows only pre-rendered value.

Look at the following link for the details:

http://seamframework.org/Community/A4jcommandButtonAndAttributeDataUsingJSON