Hi,
You are not missing anything.
Insert an onPrepare() with no arguments.
tapestry will not call onPrepare(Integer officeId) with null for officeId.
Cheers,
Dragan Sahpaski
On Mon, Jun 13, 2011 at 5:54 PM, Tony Nelson <tnel...@starpoint.com> wrote:
> I'm trying to create a simple form that will work for both Add and Edit.
> I'm trying to use onPrepare to setup the database object and the code works
> fine for an existing object. When I try to use the form with a new object
> (id = null) it appears that onPrepare isn't called, so I end up with null
> pointer exceptions trying to build the form.
>
> Here is my simple controller:
>
> package com.starpoint.helpdesk.pages.office;
>
> import com.starpoint.helpdesk.business.OfficeLogic;
> import com.starpoint.helpdesk.domain.Office;
> import com.sun.istack.internal.Nullable;
> import org.apache.tapestry5.annotations.Log;
> import org.apache.tapestry5.annotations.Persist;
> import org.apache.tapestry5.annotations.Property;
> import org.apache.tapestry5.ioc.annotations.Inject;
> import org.slf4j.Logger;
>
>
> /**
> */
> public class EditOffice {
>
> @Inject
> private Logger logger;
>
> @Inject
> private OfficeLogic officeLogic;
>
> @Persist
> private Integer officeId;
>
> @Property
> private Office office;
>
> public Integer getOfficeId() {
> return officeId;
> }
>
> @Log
> public void setOfficeId(@Nullable Integer officeId) {
> this.officeId = officeId;
> }
>
> @Log
> void onPrepare(Integer officeId) {
> if (office == null) {
> office = officeId == null ? new Office() :
> officeLogic.getOffice(officeId);
> }
> }
> void onActivate(Integer officeId) {
> this.officeId = officeId;
> }
>
> Integer onPassivate() {
> return officeId;
> }
>
> public Object onSuccess() {
> logger.info("**************: " + office.toString());
> return this;
> }
> }
>
>
> And my form:
>
> <html t:type="layout" title="helpdesk Index"
> t:sidebarTitle="Current Time"
> xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd";
> xmlns:p="tapestry:parameter">
>
> <t:form t:id="editOfficeForm" t:context="officeId">
> <t:errors/>
> <table>
> <tr>
> <td><t:label for="officeName">Office Name</t:label></td>
> <td><t:textfield t:id="officeName"
> value="prop:office.officeName"></t:textfield></td>
> </tr>
>
> <tr>
> <td colspan="2">
> <t:submit t:id="saveOffice" class="button">Save
> Office</t:submit>
> </td>
> </tr>
> </table>
>
> </t:form>
>
> </html>
>
> What am I missing?
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