Can I have a form inside another form?

Question

Hi!
Is it possible to have a form inside another form?
Regards,
Filipa

Answer 1

I think I'm messing up everything and i'm confused with how jsf works.
I've noticed now that my problem doen't have todo with if i'm usin one form or nested forms :(
The problem is (as i understood) that if the backing bean that I'm using for the chart part is a request chart, every time i submit the form a new instance of the bean is created and so the initialization of the selected checkboxes is redone.
How can I avoid this? I would like to have only the choosen checkboxes selected.
Here is the jsp code I'm using:
<h:form>
<h:panelGrid id="selectMenus" columns="2" style="margin-bottom:10px">
     <h:panelGroup style="margin-right:5px">
          <h:selectOneMenu id="projectSelectBox"
               value="#{chartTypesBean.selectedProject}" onchange="submit()">
               <f:selectItems value="#{chartTypesBean.projects}" />
          </h:selectOneMenu>
     </h:panelGroup>
     <h:panelGroup>
          <h:selectOneMenu id="chartSelectBox"
               value="#{chartTypesBean.selectedProjectChart}" onchange="submit()">
               <f:selectItems value="#{chartTypesBean.projectCharts}" />
          </h:selectOneMenu>
     </h:panelGroup>
</h:panelGrid>
<h:panelGrid id="calcByDay_grid" columns="2"
     rendered="#{chartTypesBean.lineRendered}">
     <h:panelGroup>
          <jd:barChart3d dataset="#{lineChartBean.lineDataset}" width="400"
               height="400" fileExt="png" chartTitle="Calc by Day"
               includeLegend="true" formatter="#{lineChartBean.formatter}"
               type="Line" plotColor="#D8D8D8" binding="#{lineChartBean.lineChart}" />
     </h:panelGroup>
     <h:panelGroup>
          <h:selectManyCheckbox id="lineSeries" layout="pageDirection"
               immediate="true" value="#{lineChartBean.lineSelectedSeries}">
               <f:selectItems value="#{lineChartBean.lineSeries}" />
          </h:selectManyCheckbox>
          <h:commandButton id="lineSubmit" value="Submit"
               action="submit()" />
     </h:panelGroup>
</h:panelGrid>
... (other charts) ...
</h:form>
here is the line chart backing bean code:
public class LineChartBean {
     private Logger logger = Logger.getLogger(LineChartBean.class
               .getSimpleName());
     private boolean firstTime = true;
     private final String[] lineCategories = { "27/07/05", "28/07/05",
               "29/07/05", "30/07/05", "31/07/05", "01/08/05", "02/08/05",
               "03/08/05", "04/08/05", "05/08/05", "06/08/05", "07/08/05",
               "08/08/05", "09/08/05", "10/08/05", "11/08/05", "12/08/05",
               "13/08/05", "14/08/05", "15/08/05", "16/08/05", "17/08/05",
               "18/08/05", "19/08/05", "20/08/05", "21/08/05", "22/08/05",
               "23/08/05", "24/08/05", "25/08/05", "26/08/05" };
     private final SelectItem[] lineSeries = { new SelectItem("Open", "Open"),
               new SelectItem("P1(Open)", "P1(Open)"),
               new SelectItem("P2(Open)", "P2(Open)"),
               new SelectItem("Active", "Active"), new SelectItem("Test", "Test"),
               new SelectItem("Evol", "Evol") };
     private final double[][] lineValues = { { 8, 1, 4, 6, 7, 11.60483871 },
               { 11, 1, 4, 7, 5, 11.62903226 }, { 11, 1, 4, 7, 5, 11.65322581 },
               { 11, 1, 4, 7, 5, 11.67741935 }, { 11, 1, 4, 7, 5, 11.7016129 },
               { 13, 2, 5, 7, 5, 11.72580645 }, { 14, 2, 5, 7, 5, 11.75 },
               { 12, 3, 4, 9, 5, 11.77419355 }, { 12, 3, 4, 9, 5, 11.7983871 },
               { 12, 3, 4, 9, 5, 11.82258065 }, { 12, 3, 4, 9, 5, 11.84677419 },
               { 12, 3, 4, 9, 5, 11.87096774 }, { 14, 3, 5, 10, 4, 11.89516129 },
               { 13, 2, 6, 12, 4, 11.91935484 }, { 13, 2, 6, 12, 4, 11.94354839 },
               { 13, 2, 6, 12, 4, 11.96774194 }, { 12, 2, 5, 4, 13, 11.99193548 },
               { 12, 2, 5, 4, 13, 12.01612903 }, { 12, 2, 5, 4, 13, 12.04032258 },
               { 12, 2, 5, 4, 13, 12.06451613 }, { 12, 2, 4, 4, 11, 12.08870968 },
               { 12, 2, 4, 3, 9, 12.11290323 }, { 14, 3, 5, 2, 4, 12.13709677 },
               { 11, 0, 5, 3, 5, 12.16129032 }, { 11, 0, 5, 3, 5, 12.18548387 },
               { 11, 0, 5, 3, 5, 12.20967742 }, { 12, 0, 6, 2, 5, 12.23387097 },
               { 12, 0, 6, 2, 4, 12.25806452 }, { 12, 0, 6, 2, 4, 12.28225806 },
               { 12, 0, 6, 2, 4, 12.30645161 }, { 12, 0, 6, 2, 4, 12.33064516 } };
     private DefaultCategoryDataset lineDataset;
     private String[] lineSelectedSeries;
     private NumberFormat formatter = new DecimalFormat("#,###.##");
     public CategoryDataset getLineDataset() {
          if(firstTime) {
               lineSelectedSeries = new String[lineSeries.length];
               for (int i = 0; i < lineSeries.length; i++) {
                    lineSelectedSeries[i] = (String) lineSeries.getValue();
               firstTime = false;
          lineDataset = new DefaultCategoryDataset();
          for (int serie = 0; serie < lineSeries.length; serie++) {
               String serieName = (String) lineSeries[serie].getValue();
               boolean isSelected = false;
               for (String selectedSerie : lineSelectedSeries) {
                    if (lineSeries[serie].getValue().equals(selectedSerie)) {
                         isSelected = true;
                         break;
               if (!isSelected) {
                    continue;
               } else {
                    for (int category = 0; category < lineCategories.length; category++) {
                         double y = lineValues[category][serie];
                         lineDataset
                                   .addValue(y, serieName, lineCategories[category]);
          return lineDataset;
     public NumberFormat getFormatter() {
          return formatter;
     * @return Returns the lineSelectedSeries.
     public String[] getLineSelectedSeries() {
          return lineSelectedSeries;
     * @return Returns the lineSeries.
     public SelectItem[] getLineSeries() {
          return lineSeries;
     * @param lineSelectedSeries
     * The lineSelectedSeries to set.
     public void setLineSelectedSeries(String[] lineSelectedSeries) {
          this.lineSelectedSeries = lineSelectedSeries;