[jboss-user] [JBoss Seam] - Re: Problems with extended EL syntax.

[Delphi's Ghost]

Here's my take on it, I'm not a seam expert, but I have had my fair share of these types of problems. However, trying some or all of these ideas may help you out. 

I believe that the standard JSF way of accessing a list (i.e. MyBean.myList) isn't good enough for the enhanced EL syntax, nor for the DataModelSelection, you need to make into a "seam variable". 

You can see this in action in the UI demo in the examples directory, just look at the Factories.java code : 




  | @Name("factories")
  | public class Factories
  | {
  |    @Factory("honorifics")
  |    public Honorific[] getHonorifics() {
  |       return Honorific.values();
  |    }
  | 
  | }
  | 
  | 

I'm guessing here, they provide a method which can be used to generate the honorifics array and provide it as a seam contexted variable called "honorifics"

So, in your action bean (you didn't say what datatype strings is (list, array etc), but assuming a list), you have  : 


  | 
  |   List<String> strings;
  | 
  |   @Factory("strings")
  |   public makeStrings() {
  |     strings = new List<String>();
  |     strings.add("Name1");
  |     strings.add("Name2");
  |   }
  | 
  | 

In your page, you use : 


  | <h:dataTable var="string" value="#{strings}>
  | 

Where strings is the name of your factory generated seam variable.

Alternatively, in your bean, you could just put : 


  | @DataModel
  | List<String>strings;
  | 

and make your web page code the same as above. This essentially does the same thing, creating a seam variable with the name strings, which you can access from your page. 

I'm sure someone with more knowledge and/or experience will correct me, but this might get you started on your way. 

If you have no luck, post a bit more of your simple test (page and  action bean code) and I'm sure I, or someone else will  be able to find the answer.




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