datatable / datascroller issue

[javajoe220]

Hello,
I am currently using <a:commandButton .. to populate a rich:dataTable.

Part of what this does is submit some check boxes to determine which columns to show. This part works great. The problem is when I introduce the datascroller it completely ignores the backing bean data with the criteria as to which column should be displayed. The result is none of the optional columns are displayed. So in the example below "Date" will be displayed but not "Amount". Other than this the paging is working correctly.

I tried putting everything relevant into the same <a:region to no avail. Any thoughts on what I could be doing wrong? - Thanks!

<h:form>
 <a:region id="selectionRegion">
 <rich:simpleTogglePanel label="Selection Criteria" switchType="client">
 <h:panelGroup>
 <h:selectBooleanCheckbox value="#{backingBean.showColumn}"/>
 <h:outputText value="Show me"/>
 <a:commandButton value="Get Data"
 action="#{backingBean.fetchData}"
 reRender="ajaxTran"/>

 <a:status startText="Fetching Data..." stopText=""/>
 </h:panelGroup>
 </rich:simpleTogglePanel>
 <rich:simpleTogglePanel label="Ledger Transactions" switchType="client">
 <h:panelGroup>
 <a:outputPanel id="ajaxTran">
 <rich:dataTable id="tranTable">
 .........
 <rich:column>
 #{bean.date}
 </rich:column>
 <rich:column rendered="#{backingBean.showColumn}">
 #{bean.amount}
 </rich:column>

 </rich:dataTable>

 <rich:datascroller for="tranTable"/>

 </a:outputPanel>
 </h:panelGroup>
 </rich:simpleTogglePanel>
 </a:region>
</h:form>

[sergeysmirnov]

If your backingBean has a request scope, it might work like you describe.
So, what is the scope?

[javajoe220]

Thanks for the quick response -
Everything is currently conversationally scoped in Seam. The backing bean is a Stateful session bean.

[sergeysmirnov]

I want to be sure I understand your use case correctly.

At the first time the page is loaded the "Date" is displayed but not "Amount"

When you check the select box and then click the button, the Amount becomes displayed

When you click on the datascroller. the Amount becomes hidden again

When you having the select box checked click the "Get Data" button again, the Amount becomes displayed

Does it work like that?

[javajoe220]

Yes that is correct - to clarify:

If the "show me" checkbox is checked and the column is displayed on the screen from a "Get Data" command, and then the data scroller is used - the amount column does NOT appear but the checkbox is still checked.

Subsequent "Get Data" commands restores the table until I use the datascroller again.

[sergeysmirnov]

The checkbox is not updated on the screen because you just do not update it clicking the datascroller links.

So, the truth is you have the backingBean.showColumn returns false on the server side during each request from the datascroller controls. It happens because the Conversation does not continue, but starts over (ant the default value is false for showColumn )

Try:
<rich:datascroller ajaxSingle="false" for="tranTable"/>

[ishabalov]

You may use firebug to track all requests and make sure that you always hit same conversation (normally you have conversation id between parameters)

[javajoe220]

<rich:datascroller ajaxSingle="false" for="tranTable"/>

That did the trick! - thanks!