@Named
@ViewScoped
public class NestedDynaFormController implements Serializable {

    private static final long serialVersionUID = 20120423L;

    private DynaFormModel model;

    @PostConstruct
    protected void initialize() {
        model = new DynaFormModel();

        // add rows, labels and editable controls
        // set relationship between label and editable controls to support outputLabel
        // with "for" attribute

        // 1. regular row
        DynaFormRow row = model.createRegularRow();

        // 1.1 Nested model
        DynaFormModel nestedModel = new DynaFormModel();
        DynaFormRow nestedRow1 = nestedModel.createRegularRow();

        final DynaFormLabel label11 = nestedRow1.addLabel("Firstname");
        final DynaFormLabel label12 = nestedRow1.addLabel("Lastname");

        nestedRow1 = nestedModel.createRegularRow();
        final DynaFormControl control21 = nestedRow1.addControl(new BookProperty("firstname", true), "input");
        final DynaFormControl control22 = nestedRow1.addControl(new BookProperty("lastname", true), "input");

        label11.setForControl(control21);
        label12.setForControl(control22);
        row.addModel(nestedModel, 2, 1);

        // 2. regular row
        row = model.createRegularRow();
        final DynaFormLabel label31 = row.addLabel("Date from");

        // 2.1 Nested model
        nestedModel = new DynaFormModel();
        final DynaFormRow nestedRow2 = nestedModel.createRegularRow();

        final DynaFormControl control32 = nestedRow2.addControl(new BookProperty("beginDate", false), "date");
        label31.setForControl(control32);

        final DynaFormLabel label33 = nestedRow2.addLabel("till");
        final DynaFormControl control34 = nestedRow2.addControl(new BookProperty("endDate", false), "date");
        label33.setForControl(control34);
        row.addModel(nestedModel);

        // 2.2 Nested model
        nestedModel = new DynaFormModel();
        final DynaFormRow nestedRow3 = nestedModel.createRegularRow();

        final DynaFormLabel label36 = nestedRow3.addLabel("Located from");
        final DynaFormControl control37 = nestedRow3.addControl(new BookProperty("locationStart", "Lane A", false),
                    "input");
        label36.setForControl(control37);

        final DynaFormLabel label38 = nestedRow3.addLabel("To");
        final DynaFormControl control39 = nestedRow3.addControl(new BookProperty("locationEnd", "Lane B", false),
                    "input");
        label38.setForControl(control39);

        row.addModel(nestedModel);
    }

    public DynaFormModel getModel() {
        return model;
    }

    public String submitForm() {
        final FacesMessage.Severity sev = FacesContext.getCurrentInstance().getMaximumSeverity();
        final boolean hasErrors = sev != null && FacesMessage.SEVERITY_ERROR.compareTo(sev) >= 0;

        PrimeFaces.current().ajax().addCallbackParam("isValid", !hasErrors);

        return null;
    }

    public List<BookProperty> getBookProperties() {
        if (model == null) {
            return null;
        }

        final List<BookProperty> bookProperties = new ArrayList<BookProperty>();
        for (final DynaFormControl dynaFormControl : model.getControls()) {
            bookProperties.add((BookProperty) dynaFormControl.getData());
        }

        return bookProperties;
    }
}
            

public class BookProperty implements Serializable {

    private static final long serialVersionUID = 20120521L;

    private String name;
    private Object value;
    private boolean required;

    public BookProperty(String name, boolean required) {
        this.name = name;
        this.required = required;
    }

    public BookProperty(String name, Object value, boolean required) {
        this.name = name;
        this.value = value;
        this.required = required;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Object getValue() {
        return value;
    }

    public Object getFormattedValue() {
        if (value instanceof Date) {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("d MMM yyyy");

            return simpleDateFormat.format(value);
        }

        return value;
    }

    public void setValue(Object value) {
        this.value = value;
    }

    public boolean isRequired() {
        return required;
    }

    public void setRequired(boolean required) {
        this.required = required;
    }
}