You are writing that you implement your own TreeModel. Is it really neccessary in your use case? In my experience the Trinidad framework already can take care of a lot of things (including lazy loading of children, for example).
I find the following approach very useful: 1. Create a bean that models a node/leaf in your tree with accessor methods for properties (in your case: department name and such). 2. Add a "getChildren()" method that returns a list of these bean instances (in your case: the subdepartments). 3. Wrap the root(s) of your tree in a list and then in a ChildPropertyTreeModel . A longer explanation can be found here: http://myfaces.apache.org/trinidad/trinidad-api/apidocs/org/apache/myfaces/trinidad/model/ChildPropertyTreeModel.html To your problem: How do you generate the children? Load them lazily from the database? Is it possible that on the first load only the first child is actually generated? Did you use a debugger in the place where you create the children? (Disclaimer: I have mostly used tr:treeTable and not tr:tree so this may not be applicable to your case.) HTH, Dirk On Mon, May 26, 2008 at 8:59 AM, Piekorz Martin <[EMAIL PROTECTED]> wrote: > Hi @ all, > > > > does someone know or have a running example where he implemented his own > treemodel? Or a example / javadoc where the whole idea how the model should > be implemented is explained? > > I am implementing my own treemodel. So I inherit from Treemodel and > implement all the abstract methods. > > In my model I have a department which has subdepartments and each > subdepartment can also contain subdepartments … > > The model seems to work but the PPR seem not to work. > > When I open the node in the UI then just the first child is shown. After > calling refresh everything (the whole tree) is shown. > > What could be the reason? > > > > Thank a lot of. > > > > Kind regards > > Martin > >
