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Last post:
Dec 14, 2007 3:27 PM by
Tatyana Matveyeva
Hello Tatyana,
it's quite a bit difficult to explain. But I'll try to explain the wohle situation:
On the left side of the page, I've got a DataTable in which you can select a group.
On the right side, there is the Chart component and the two DataChooser components (shown in statisticsGroupDetail.jsp), which should only be rendered when a group is selected on the left side.
This is realized by the rendered="#{GroupStatisticsBackingBean.groupSelected}" tag, which is set by clicking on an item in the TreeTable.
This is shown here:
<q:singleRowSelection rowData="#{StatisticsGroupDataTableBackingBean.selectedGroup}"
styleClass="groupDataTableSelectedRow"
>
<a4j:support event="onchange"
action="#{StatisticsGroupDataTableBackingBean.processRowDataSelection}"
actionListener="#{GroupStatisticsBackingBean.dropdownActionListener}"
onsubmit="q_showPopupLayerCentered('loadingPopup');"
oncomplete="q_hidePopupLayer('loadingPopup');"
reRender="a4jGroupStatistics, a4jVehicleStatistics"
></a4j:support>
</q:singleRowSelection>
You're right, when you say, that the DataChooser is always shown in my example files, because this is the working copy. So just insert the rendered="#{GroupStatisticsBackingBean.groupSelected}" tag in the blank space within the DataChooser tags 
The first DataChoosers is bound to the GroupStatisticsBackingBean.dataStart and the second to GroupStatisticsBackingBean.dataEnd. When I change the value of the DateChooser by selecting a Date from the dropdown calendar, the value in the backing bean should also changed, or am I wrong?
(Well, this is actually done, when I remove the rendered="..." tag, mentioned above.
Now in the method GroupStatisticsBackingBean.makeData triggered by the a4j:commandButton ("update" button, file statisticsGroupDetail.jsp) I've inserted a sysout for dataStart and dataEnd which prints me the current values of the two attributes when clicking the "update" button.
The problem is, when I insert the rendered="..." tag in the DateChooser tags, the two dates won't update anymore. On the console there is always the same output no matter what I select in the dropdown calender.
If the rendered="..." tag is removed from the DataChoosers the console shows exactly the dates I've selected before clicking on the button.
console output if DataChoosers are always rendered, after clicking the "update" button:
INFO GroupStatisticsBackingBean.makeData() - start date: 2007-10-15 00:00:00
INFO GroupStatisticsBackingBean.makeData() - end date: 2007-10-21 00:00:00
console output if DataChoosers are only rendered when a group is selected, after clicking the "update" button:
INFO GroupStatisticsBackingBean.makeData() - start date: 2007-10-26 08:33:20
INFO GroupStatisticsBackingBean.makeData() - end date: 2007-10-26 08:33:20
--> nothing is upated here
(In both cases I selected 2007-10-15 as start date and 2007-10-21 as end date. The time doesn't matter for my application)
I hope this rather long answer helps to explain my problem.
Thank you,
regards
Matthias