Well, I was using a TreeMap and put it straight to the application scope from a
plugin, but what i needed was some collection in the scope, then i did :
Map states = new TreeMap();
states.put(...);
getServletContext().setAttribute("states",states.entrySet());
The entrySet() returns a Set (collection) of Map.Entry wich is like a bean, with
methods getKey() and getValue(), so i can use it normally with <html:options>.
Thank you all for the contributions,
Henrique Viecili
----- Original Message -----
From: Ron Grabowski
To: struts
Sent: Wednesday, June 16, 2004 12:11 AM
Subject: Re: <html:options> using java.util.Map
> From: "Barnett, Brian W." <[EMAIL PROTECTED]>
> To: 'Struts Users Mailing List'
> <[EMAIL PROTECTED]>
> Subject: RE: <html:options> using java.util.Map
> Date: Tue, 15 Jun 2004 13:44:00 -0500
>
> If you don't use the collection attribute, and you
> want different values and
> labels in the list, you need to define two separate
> collections, one for the
> values and one for the labels.
>
> ArrayList statesValues = new ArrayList();
> statesValues.add("RS");
> statesValues.add("SC");
> statesValues.add("PR");
> ArrayList statesLabels = new ArrayList();
> statesLabels.add("Rio Grande do Sul");
> statesLabels.add("Santa Catarina");
> statesLabels.add("Paraná");
Or you could use a LabelValueBean:
LabelValueBean[] schoolIds = new LabelValueBean {
new LabelValueBean("Rio Grande do Sul","RS"),
new LabelValueBean("Santa Catarina","SC"),
new LabelValueBean("Parana","PR")
};
If you make schoolIds a property on your ActionForm
you're able to do this:
<html:select property="schoolId">
<html:options property="schoolIds">
</html:select>
I've always thought naming the options list the plural
of the property I'm trying to set is the most straight
forward naming convention: the user is selecting a
schoolId from a list of valid schoolIds.
If you still want to us a Map, I would use a
LinkedHashMap so the order in which you add the
elements is the same order in which they print out.
- Ron
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