The "availableRoles" List is populated in StartupListener.java:
/**
* This method uses the LookupManager to lookup available roles
from the data layer.
* @param context The servlet context
*/
public static void setupContext(ServletContext context) {
ApplicationContext ctx =
WebApplicationContextUtils.getRequiredWebApplicationContext(context);
LookupManager mgr = (LookupManager) ctx.getBean("lookupManager");
// get list of possible roles
context.setAttribute(Constants.AVAILABLE_ROLES, mgr.getAllRoles());
log.debug("Drop-down initialization complete [OK]");
}
You should be able to put a list of objects in any scope in your
controller to do the same thing. The referenceData() method is a
recommended location.
Matt
On 8/20/07, Aled Rhys Jones <[EMAIL PROTECTED]> wrote:
> Any ideas guys?
>
> Aled Rhys Jones wrote:
> > Hi all
> >
> > I'm trying to get my head around the may to many pickList. I've got a
> > many to many relationship between a website model and a website type
> > model.
> > The pick list used in the user form seems suitbable, but when I try to
> > use it I get Null Pointer (jasper) exceptions.
> > Questions:
> > Where do availableRoles in userform.jsp get populated?
> > UserFormController doesn't seem to be doing this.
> > Do I need a bind a customeditor to get from strings to ids? What
> > should I bind to?
> >
> > Thanks in advance for any help.
> >
> > Cheers
> > Aled
> >
> > p.s. my jsp snippet:
> > <c:choose>
> > <c:when test="${not empty website.id}">
> > <li>
> > <fieldset class="pickList">
> > <legend><fmt:message
> > key="websiteForm.assignWebsiteTypes"/></legend>
> > <table class="pickList">
> > <tr>
> > <th class="pickLabel">
> > <appfuse:label
> > key="websiteForm.availableWebsiteTypes" colon="false"
> > styleClass="required"/>
> > </th>
> > <td></td>
> > <th class="pickLabel">
> > <appfuse:label
> > key="websiteForm.currentWebsiteTypes" colon="false"
> > styleClass="required"/>
> > </th>
> > </tr>
> > <c:set var="leftList"
> > value="${availableWebsiteTypes}" scope="request"/>
> > <c:set var="rightList"
> > value="${website.websiteTypes}" scope="request"/>
> > <c:import url="/WEB-INF/pages/pickList.jsp">
> > <c:param name="listCount" value="1"/>
> > <c:param name="leftId"
> > value="availableWebsiteTypes"/>
> > <c:param name="rightId" value="websiteTypes"/>
> > </c:import>
> > </table>
> > </fieldset>
> > </li>
> > <li>
> > <strong><appfuse:label
> > key="websiteForm.currentWebsiteTypes"/>:</strong>
> > <c:forEach var="websiteType"
> > items="${website.websiteTypes}" varStatus="status">
> > <c:out value="${websiteType.label}"/><c:if
> > test="${!status.last}">,</c:if>
> > <input type="hidden" name="websiteTypes"
> > value="<c:out value="${websiteType.label}"/>"/>
> > </c:forEach>
> > </li>
> > </c:when>
> > <c:otherwise>
> > <li>
> > <p><fmt:message key="websiteForm.saveWebsiteTypes"/></p>
> > </li>
> > </c:otherwise>
> >
> > My fromcontroller (so far):
> > private WebsiteManager websiteManager = null;
> > private CountryManager countryManager = null;
> > private UserManager userManager = null;
> > private WebsiteTypeManager websiteTypeManager = null;
> > public void setWebsiteManager(WebsiteManager websiteManager) {
> > this.websiteManager = websiteManager; }
> > public void setCountryManager(CountryManager countryManager) {
> > this.countryManager = countryManager; }
> > public void setUserManager(UserManager userManager){
> > this.userManager = userManager;
> > }
> > public void setWebsiteTypeManager(WebsiteTypeManager
> > websiteTypeManager){
> > this.websiteTypeManager = websiteTypeManager;
> > }
> >
> > public WebsiteFormController() {
> > setCommandClass(Website.class); setCommandName("website"); }
> > protected Object formBackingObject(HttpServletRequest request)
> > throws Exception { String id = request.getParameter("id");
> > Website website;
> > if (!StringUtils.isBlank(id)) {
> > website = websiteManager.get(new Long(id)); }
> > else{
> > website = new Website();
> > Url url = new Url();
> > website.setUrl(url);
> > Contact contact = new Contact();
> > website.setContact(contact);
> > }
> > return website;
> > }
> > public ModelAndView onSubmit(HttpServletRequest request,
> > HttpServletResponse response, Object
> > command, BindException errors)
> > throws Exception { log.debug("entering 'onSubmit' method...");
> > Website website = (Website) command; boolean isNew =
> > (website.getId() == null); String success = getSuccessView();
> > Locale locale = request.getLocale(); if
> > (request.getParameter("delete") != null) {
> > websiteManager.remove(website.getId());
> > saveMessage(request, getText("websiteForm.deleted", locale));
> > } else {
> > String key = (isNew) ? "websiteForm.added" :
> > "websiteForm.updated";
> > User requestUser =
> > userManager.getUserByUsername(request.getRemoteUser());
> > if(request.getParameter("disapprove") != null){
> > website.setIsChecked(false);
> > website.setCheckedUser(null);
> > }
> > else if(request.getParameter("approve") != null){
> > website.setIsChecked(true);
> > website.setCheckedUser(requestUser);
> > }
> > if (!isNew) {
> > success = "redirect:websiteform.html?id=" +
> > website.getId();
> > String[] selectedWebsiteTypes =
> > request.getParameterValues("websiteTypes");
> >
> > if (selectedWebsiteTypes != null) {
> > List<WebsiteType> websiteTypes = new
> > ArrayList<WebsiteType>();
> > for (String websiteType : selectedWebsiteTypes) {
> >
> > websiteTypes.addAll(websiteTypeManager.findByType(websiteType));
> > }
> > website.setWebsiteTypes(websiteTypes);
> > }
> >
> > } else{
> > website.setSubmittedUser(requestUser);
> > }
> > websiteManager.save(website);
> > saveMessage(request, getText(key, locale));
> > }
> > return new ModelAndView(success); }
> > protected Map referenceData(HttpServletRequest request) throws
> > Exception {
> > Map<String, Object> retval = new HashMap<String, Object>();
> > retval.put("countries", countryManager.getAll());
> > retval.put("availableWebsiteTypes", websiteTypeManager.getAll());
> > return retval;
> > }
> > @Override
> > protected void initBinder(HttpServletRequest request,
> > ServletRequestDataBinder binder) {
> > binder.registerCustomEditor(Country.class, "contact.country",
> > new CountryEditor(countryManager));
> > binder.registerCustomEditor(Set.class, "websiteTypes", new
> > CustomCollectionEditor(Set.class) {
> > protected Object convertElement(Object element) {
> > if (element != null) {
> > Long id = new Long((String)element);
> > WebsiteType websiteType = websiteTypeManager.get(id);
> > return websiteType;
> > }
> > return null;
> > }
> > });
> > }
> >
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> >
> >
> >
> >
>
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