Re: Does SelectItem value have to be a string?

[Andrew Robinson]

Since the value is taken from HTML, it has to be represented as a
string on the client. To do this you must use a converter on your
listbox to convert to and from the object.

On 2/9/07, kal stevens <[EMAIL PROTECTED]> wrote:

I have the code pasted below, and I get the following error

javax.servlet.ServletException: Value is no String
(class=java.util.ArrayList, value=[[2820] three, [2821] emi, [2822] emi_uk,
[2823] itn, [2824] abc, [2825] ae, [2826] boomchicago, [2827] chillitv,
[2828] comedytime, [2829] criticalcontents, [2830] disney, [2831] deltatre,
[2832] endemol, [2833] fashiontv, [2834] hitentertainment, [2835]
hollywoodlic, [2836] ifilms, [2837] kamera, [2838] setanta, [2839] sports,
[2840] news, [2841] northonetv, [2842] teamtalk, [2843] tvnewmedia, [2844]
bbc, [2845] weatherchannel, [2846] offthefence, [2847] zonemedia]) and
component reportForm:cpvaluewith path: {Component-Path : [Class:
javax.faces.component.UIViewRoot,ViewId:
/jsp/reports/reportGenerator.jsp][Class:
javax.faces.component.html.HtmlForm,Id: reportForm][Class:
org.apache.myfaces.component.html.ext.HtmlSelectOneListbox,Id:
cpvalue]} does not have a Converter

javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)
rhythm.marketplace.filters.SessionFilter.doFilter(SessionFilter.java
:69)
rhythm.marketplace.filters.AuthFilter.doFilter(AuthFilter.java:152)

So Is f:selectItems valid when I give it a List<SelectItem> when the
SelectItem is constructed with an Object and a String?

 It takes in an object not a String, so I assumed this would be valid.

Thanks

Kal

------------------------JSF Page
-----------------------------------------------------------
    <x:selectOneListbox value="#{
reportGeneratorBean.selectedProvider}" id="cpvalue">
        <f:selectItems
value="#{reportGeneratorBean.selectItemProviders}"
id="selectCPItems"/>
    </x:selectOneListbox>



-------------------------Backing Bean
-------------------------------------------------
    private List<ContentProvider> selectedProvider;

    public List<ContentProvider> getSelectedProvider() {
        return selectedProvider;
    }

    public void setSelectedProvider(List<ContentProvider>
selectedProvider) {
        this.selectedProvider = selectedProvider;
    }


    public List<SelectItem> getSelectProviders() {
        List<SelectItem> returnVal = new ArrayList<SelectItem>();
        List<ContentProvider> cps = getContentProviders();
        returnVal.add(new SelectItem(cps, "all"));
        for (ContentProvider cp:cps) {
            List<ContentProvider> cpList = new ArrayList<ContentProvider>();
            cpList.add(cp);
            returnVal.add(new SelectItem(cpList, cp.getName()));
        }
        return returnVal;
    }