Processing a form's multi-select data with flow and JXTemplate

[Derek Hohls <DH...@csir.co.za>]

I have a (ordinary) form with multi-select field.  The form's 
data is then intercepted by a flow routine, and must then be 
processed by a JXTemplate page.

In the form:

<select multiple="multiple" size="5" name="Year_pd">

In the flow page:

var Year_pd = cocoon.request.getParameter("Year_pd");
cocoon.sendPage("core-sql.xml", {"Year_pd":Year_pd} );

In  the JXTemplate page:

  <jx:forEach var="year" items="${Year_pd}">
    <test>${year}</test>
  </jx:forEach>
  
The problem is that this latter code throws a null pointer 
exception when it is called.

Is there some special technique for processing this type
of data correctly?

Thanks
Derek

(Using Cocoon 2.1.5)

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Re: Processing a form's multi-select data with flow and JXTemplate

[gioni <g....@cbim.it>]

Derek Hohls wrote:

>I have a (ordinary) form with multi-select field.  The form's 
>data is then intercepted by a flow routine, and must then be 
>processed by a JXTemplate page.
>
>In the form:
>
><select multiple="multiple" size="5" name="Year_pd">
>  
>
Multiple is a boolean value

<select multiple size="5" name="Year_pd">

>In the flow page:
>
>var Year_pd = cocoon.request.getParameter("Year_pd");
>  
>
Are you sure that getParameter return an array or a list of value, try 
print(Year_pd); to see the type.

Why don't you use a cocoon cform?

With cform is quite simple,

in definition file

    <fd:multivaluefield id="year_pd">
      <fd:label>Year</fd:label>
      <fd:datatype base="integer"/>
      <fd:validation>
        <fd:value-count min="1"/>
      </fd:validation>
      <fd:selection-list>
        <fd:item/>
      </fd:selection-list>
    </fd:multivaluefield>

in flowscript

        var Year_pd = form.lookupWidget("year_pd").value;

this return an array of value

I hope this can help you

Bye Gioni

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