3 Replies Latest reply on Apr 23, 2010 4:53 PM by cosmo

    pass return value from javascript to seam

    marcel.m.vielsack.cluetec.de
    marcel.m.vielsack.cluetec.de Apr 21, 2010 10:32 AM

      Hi!


      I want to store the return value of a javascript in a seam component, but i just don't know how to do this.


      Things like this don't work:


      <h:commandButton value="submit" action="#{mySeamComponent.store(javascript:getValue())}"/>


      Has anybody an idea?


      Thanks.


      Cheers Marcel

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        • 1. Re: pass return value from javascript to seam
          tausuahmed
          tausuahmed Apr 21, 2010 1:50 PM (in response to marcel.m.vielsack.cluetec.de)

          Hi Marcel,


          You can go with reverse process.
          First call a javascript method and perform operation whatever is there in getValue(), and pass the result of getValue to Seam Component using seam remoting method.


          Check Seam Remoting...



          Regards,
          Tauseef

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          • 2. Re: pass return value from javascript to seam
            marcel.m.vielsack.cluetec.de
            marcel.m.vielsack.cluetec.de Apr 22, 2010 1:22 PM (in response to marcel.m.vielsack.cluetec.de)

            Hey


            Thanks for the reply.
            I try to do it the way you suggested.


            Now I'm facing a new problem...
            I added the @WebRemote annotation to the Java method and added


            <s:remote include="mySeamComponent" />


            to the xhtml file.
            When I try to call the method from my javascript function, i get this error (reported by firebug)
            "Error: mySeamComponent.myJavaMethod is not a function"


            I also copied the jboss-seam-remoting.jar into the EAR-Content\lib folder.


            Does anybody know a solution?


            Thanks.

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            • 3. Re: pass return value from javascript to seam
              cosmo
              cosmo Apr 23, 2010 4:53 PM (in response to marcel.m.vielsack.cluetec.de)

              Another thing you can do is to use hidden fields where you can assign the javascript value.
              Take a look at this:




              <!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"
       xmlns:h="http://java.sun.com/jsf/html">
     <body>
          <script>
               function assignValue(){
                    var d = new Date();
                    document.getElementById("form1:hidden1").setAttribute("value",d);
               }
          </script>
          <h:form id="form1">
               <h:inputHidden id="hidden1" value="#{mySeamComponent.localTime}" />
               <h:commandButton action="#{mySeamComponent.showLocalTime}" value="Submit" onclick="javascript:assignValue()"/>
          </h:form>
     </body>
</html>



              MySeamComponent.java



              @Name("mySeamComponent")
public class MySeamComponent {
     private String localTime;
     
     public void showLocalTime(){
          System.out.println(localTime);
     }

     public String getLocalTime() {
          return localTime;
     }

     public void setLocalTime(String localTime) {
          this.localTime = localTime;
     }
}










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