Here the code snippet 'from time to time' : i mean that when user clicks some radio button i re render the <h:panelGroup id="expenses_table_wrapper"> that holds the table , even when i dont specify the column ids explicitly and let the JSF do that, i still get the same "duplicate id exception"
<h:panelGroup id="expenses_table_wrapper"> <h:form prependId="false" id="expenses_form"> <p:dataTable id="expenses_table" value="#{expensesPage.expensesList}" var="expense" rendered="#{not empty expensesPage.expensesList}"> <c:forEach items="#{expensesPage.unitsOfTime}" var="unitOfTime"> <p:column id="expenses_table_device_column#{expensesPage.fixStatisticsDateDate(unitOfTime)}" sortBy="SomeValue"> <f:facet name="header"> <h:outputText value="#{unitOfTime}"/> </f:facet> <h:outputText value="SomeValue"/> </p:column> </c:forEach> </p:dataTable> </h:form> </h:panelGroup> On Tue, Jan 17, 2012 at 10:31 AM, Milo van der Zee <m...@vanderzee.org>wrote: > Hello Daniel, > > some code snippets could be helpfull. > What do you mean by 'from time to time'? Doe you use an ajax library to > rerender the table or do you mean by complete page render? > > Do you need the id's on the columns? Can't you just let JSF assign id's? > > I know that c: tags work problamatic with the view tree because they are > not an element in that tree. Often using ui:repeat works better. > > I don't know what is changed between 2.0.8 and 2.0.11. Might be that > they now follow the specs better... > > MAG, > Milo van der Zee > > > On Tue, 2012-01-17 at 08:37 +0200, Daniel Reznick wrote: > > Hi > > > > Till now I was creating dynamic columns inside a dataTable using the > > c:forEach , I was assigning unique Ids to each column and from time to > time > > was re-creating the table with different columns with no problem at all > > > > I was using the myfaces-api-2.0.5, myfaces-bundle-2.0.5 and the > > myfaces-impl-2.0.5 jars , yesterday I switched to 2.0.11 , and the > > c:forEach started to throw me errors , "java.lang.IllegalStateException > > component with duplicate id" > > and the id that was displayed was the id of the first column, so I guess > > for some reason it tries to create the same columns again and again and > > still remembers the old columns, > > > > so after seeing this error I downgraded to 2.0.8 , and the error was > gone, > > so... Some thing went WRONG between 2.0.8 and 2.0.11, > > > > what could it be? > > > > How can I solve this issue , cause I need to use 2.0.11 version, > > > > > > Help will be very appreciated, > > > > > > Regards, > > > > Daniel. > > >