Hello Daniel, I've never used p: (primefaces?). Do you have the same problem when using h: tags (besides that the table won't be useable for you...)?
I have a table somewhere with a dynamic number of columns and I fixed simular issues by letting the button call an a4j:jsFunction javascript that then calls the render instead of directly rerendering the table. But I use RichFaces so that is completely different. Might be that you could invalidate the view tree after clicking the button. Then you are sure that it is rebuild every time. Might be that this is related (https://issues.apache.org/jira/browse/MYFACES-3436). Is the error still there if you reload the page from the browser after the button click? MAG, Milo On Tue, 2012-01-17 at 10:52 +0200, Daniel Reznick wrote: > 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 <[email protected]>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. > > > > > >
