Hi guys,
I'm close to get crazy because I don't find a way to debug what JSF/Seam is
doing behind the curtain.
My current problem is that I'm displaying a data table and I want to enable the
user to select a few of these rows using checkboxes. I'm doing fine to display
the table, and all the rows which should be pre-selected by default are indeed
checked. However, I'm getting a funny result when I'm getting the user's input
back from JSF. (_all_ table rows are returned as non-selected, regardless of
what the user actually selected)
Well, I'm sitting with this problem for the complete weekend now and don't know
which way I could find out what is going wrong. Could anybody please give me
any idea how I could debug this baby? I tried a lot in the last days, but it
looks like I'm missing the point - and I don't know how to find out what's
going wrong.
To give you an idea what I'm doing:
I'm writing a data table like this: <h:dataTable
value="#{sortedTangibleLocations}" var="distanceLocationPair"
rendered="#{sortedTangibleLocations!=null and
sortedTangibleLocations.rowCount>0}">
| ... [display distanceLocationPair, never mind - works fine]
| <h:column>
| <f:facet name="header">"In" Area
#{areaSearch.selectedArea}</f:facet>
| <h:selectBooleanCheckbox
value="#{areaMemberSelections[distanceLocationPair]}" />
| </h:column>
| </h:dataTable>
I kind of need to understand what happens with "areaMemberSelection."
areaMemberSelection is a Map<DistanceLocationPair,Boolean> and it is supposed
to carry the information which data row is selected to and from the JSF page.
@In(scope=ScopeType.CONVERSATION,required=false)
| @Out(scope=ScopeType.CONVERSATION,required=false)
| private Map<DistanceLocationPair,Boolean> areaMemberSelections;
As I said before, I'm able to pre-select rows from the data table (List
sortedTangibleLocations). Map areaMemberSelections is initialized with those
(few) table rows which should be displyed as pre-selected. Please note that I
don't include all table rows here, just those which should be marked as
selected.
However, when I get the user selecetions back in the action bean, I always get
the same strange result. Map areaMemberSelections is obviously changed - but
it's wrong. I'm getting a map with _all_ the rows from the displayed table -
and none of them is selected, the Boolean is always false. No matter what the
user does and no matter what the default selections were. In the end I'm only
getting "unselected" table rows.
You see, since populating my "input fields" (checkboxes) worls fine, I think
I'm on the right track. Furthermore, it's done quite closely following the Seam
examples (dvdstore). So I would really like to debug what's going on and why I
keep on getting this strange result with everything unselected. But I don't
know how to do that. Any ideas what to do, please?
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