[jboss-user] [JBoss Seam] - Re: Facelets: Parameters to custom tags

[niesar]

Hi Marcus,

I'm not sure if I correctly understand what you try to do. But let's give it a try...

In<le:kontoname konto="#{kontozeile_iter}" liste="#{leistungsschein.kontozeilen}" />you are actually passing kind of a reference of your data (kontoname_iter) to your custom tag. In kontoname.xhtml you are then accessing "kontozeile_iter" using the name "konto".

If you also want to use "konto" aka "kontoname_iter" in the bean, you need to make "kontozeile_iter" available for the bean, too. 

It's hard to guess where "kontozeile_iter" is coming from in your code, but looking at the name it sounds like you are iterating through a list of - let's say - "Kontozeile" instances. I further guess a variable like "Kontozeile kontoname_iter" is supposed to be the currently selected element of the list.

If that is the case, you may want to take a look at Seam's @DataModel/@DataModelSelection. It is used in the hotel booking example, see 
http://docs.jboss.com/seam/latest/reference/en/html/tutorial.html#booking .  If you take a look at HotelSearchAction.java, you will find @DataModel and @DataModelSelection. 

In main.xhtml (you will find it in the booking example which comes with Seam) you can see how this is used to display a list of hotels.

Now, if you want to pass your user's selection to another Bean, you can access it from there by using a getter method. 

In the booking example Bean HotelSearchingAction is annotated with @Name("hotelSearch"): @Name("hotelSearch")      //  !!!
  | @Scope(ScopeType.SESSION)
  | public class HotelSearchingAction implements HotelSearching {
  |    ...   
  |    @DataModel                                                                          
  |    private List<Hotel> hotels;
  |    @DataModelSelection                                                                  
  |    private Hotel selectedHotel;
  |    ... 
  |    public Hotel getSelectedHotel() {           // that's the way to access the user selection
  |        return selectedHotel;
  |    } 
  | 
If you want to access the user selection from another Bean, this could be done like this: 
  | @In
  | private HotelSearching hotelSearch  // from the @Name annotation in HotelSearchingAction.java
  | [...]
  | // later in your code:
  | Hotel selectedHotelFromOtherBean = hotelSearch.getSelectedHotel()/;
  | // now do something useful with selectedHotelFromOtherBean
  | 
Is this more or less what you try to do?

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