Maybe I'm missing something obvious, but why don't you simply define a
modelClass for your template (by defining "modelClass" node data in your
template and setting it's value to point to your model). And make use of
the fact that Magnolia will instantiate model class and make it
available for you?
In the template you then simply call (assuming you make that method
public)
${model.magnoliaUserForUsernameAndManagerName("userName", "admin")}
and you don't have to do anything with the context, no overriding
anything, no nothing.
If your template is of type stk rather then freemarker you might need to
have your model extend different class. See for example
info.magnolia.module.templatingkit.paragraphs.ContentTypeSyndicateModel
When it comes to getting user object, the ${ctx.user} would be enough if
what you want is current user.
HTH,
Jan
On Thu, 2009-12-03 at 18:30 +0100, Will Scheidegger wrote:
> Answering my own question... and boy does this seem complicated to me!
> So if there is an easier way then described below _please_ let me
> know.
>
>
> The "method class" I came up with to solve the problem:
>
>
> public class UserForUsernameMethod implements TemplateMethodModel {
>
>
> import freemarker.ext.beans.BeanModel;
> import freemarker.template.DefaultObjectWrapper;
> import freemarker.template.TemplateMethodModel;
> import freemarker.template.TemplateModel;
> import freemarker.template.TemplateModelException;
> import info.magnolia.cms.security.SecuritySupport;
> import info.magnolia.cms.security.User;
> import info.magnolia.cms.security.UserManager;
> import java.util.List;
>
>
> public class UserForUsernameMethod implements TemplateMethodModel {
>
>
> public TemplateModel exec(List args) throws TemplateModelException
> {
> if (args.size() < 1) {
> throw new TemplateModelException("Wrong arguments");
> } else {
> String userManagerName = "admin";
> String userName = (String) args.get(0);
> if (args.size() > 1) {
> userManagerName = (String) args.get(1);
> }
> User user =
> magnoliaUserForUsernameAndManagerName(userName, userManagerName);
> if (user != null) {
> return new BeanModel(user,
> DefaultObjectWrapper.getDefaultInstance());
> } else {
> return TemplateModel.NOTHING;
> }
> }
> }
>
>
> private User magnoliaUserForUsernameAndManagerName(String
> userName, String userManagerName) {
> UserManager userManager =
> SecuritySupport.Factory.getInstance().getUserManager(userManagerName);
> return userManager.getUser(userName);
> }
> }
>
>
> And to add the method to the model in the template class
> extending TemplatedMVCHandler I had to overwrite the renderHtml()
> method and add the method there:
>
>
> @Override
> public void renderHtml(String view) throws IOException {
> // no rendering if view is null
> if(StringUtils.isEmpty(view)){
> return;
> }
>
>
> String template = this.getTemplateName(view);
> if (template != null) {
>
>
> Map data = new HashMap();
> data.put("this", this);
> data.put("view", view);
> data.put("userForUsername", new UserForUsernameMethod());
>
>
> PrintWriter writer;
>
>
> try {
> writer = getResponse().getWriter();
> }
> catch (IllegalStateException e) {
> // getResponse().getOutputStream() has already been
> called
> writer = new
> PrintWriter(getResponse().getOutputStream());
> }
> FreemarkerUtil.process(template, data, writer);
> }
> }
>
>
> Afterwards, I was able to access the user data in my template:
> test: ${userForUsername("test").password}
>
>
> Quite a bit of work! At the moment, even custom JSP tags seem easier
> to me. But maybe after getting used to this...
>
>
> -will
>
>
>
>
>
>
>
>
> On 03.12.2009, at 17:45, Will Scheidegger wrote:
>
> > Dear Magnolians
> >
> > Can someone give me a quick primer on how to call java methods from
> > a Freemarker template? From looking at the documentation one does
> > not seem to be able to simply call a method in an object. It looks
> > like the methods need to be implemented as subclass of
> > "TemplateMethodModel" (see [1]). This seems quite complicated, but I
> > guess I could do that. But then, where is this method added to the
> > data model (i.e. "root.put("methodName", new MethodClass())?
> >
> > To be more specific: I would like to access the user info in a
> > Freemarker template, where I only have the username. So I would need
> > a method which would return the user (object? "data-model"? hash?)
> > when passing in the username. I am using the TemplatedMVCHandler
> > class to display the template. The template displays fine. But now
> > I'm a bit stuck with adding the method...
> >
> > Thanks for the insight!
> > -will
> >
> >
> > [1] http://freemarker.sourceforge.net/docs/pgui_datamodel_method.html
> >
> >
> > ____________________________________________________________________
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> > To unsubscribe, E-mail to: <[email protected]>
> > ----------------------------------------------------------------
> >
>
>
>
>
>
> ______________________________________________________________________
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