Seam 2.0 BETA : convertEntity / SelectOneMenu problem

[vwiencek]

Hi,

I have some difficulties to use a selectOneMenu with Seam.

I have a RegisterBean which containes the following ...

@Stateful
@Scope(ScopeType.SESSION)
@Name("register")
public class RegisterBean implements Register {
 ...
 @PersistenceContext
 private EntityManager em;
 ...

 @In (required = false)
 private City selectedCity;

 public List<City> getCities() {
 ...
 }
}

My bean interface contains

@Local
public interface Register {
 ....
 public List<City> getCities();

}

My register.xhtml file contains

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
 xmlns:s="http://jboss.com/products/seam/taglib"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:rich="http://richfaces.ajax4jsf.org/rich"
 xmlns:a="https://ajax4jsf.dev.java.net/ajax"
 template="layout/template.xhtml">
....
 <h:selectOneMenu
 id="selectedCity"
 value="#{selectedCity}"
 required="false">

 <s:selectItems
 value="#{register.cities}"
 var="c"
 label="#{c.postalCode} - #{c.name}"
 noSelectionLabel="Select a City" />
 <s:convertEntity />
 </h:selectOneMenu>
...
</ui:composition>

Now, when I try to access my form, the combobox displays with my list of cities, but when I submit the form, I get a null value into register.selectedCity ... and I can't get rid of that problem.

Behind this, I'm asking whether I must use @DataModel (for my list of cities) and @DataModelSelection for my selectedCity value.

Thanks a lot.

Vincent

[vincent.latombe]

try to replace

value="#{selectedCity}"

with

value="#{register.selectedCity}"

.

I think it has to do with scope of your selectedCity variable.

[vwiencek]

I've already tried to do that. But if I want to use register.selectedCity, I need to write accessors for the value, and expose them in the interface .... and it doesn't solve my problem ....

[vwiencek]

Maybe I can add some details :
* Outjection works : when I set the value into the bean, the correct city is selected into the combobox
* Injection doesn't work : when I change the value of the City, change is persisted when I reload the page, but not injected into the selectedCity of my bean ...

[pmuir]

Normally you use getters and setters with input controls.

[vwiencek]

OK,

now I have in my managed bean :

 @In(required = false)
 private City selectedCity;
 public City getSelectedCity() {return selectedCity;}
 public void setSelectedCity(City c) {this.selectedCity = c;}

with interfaces declared .....

<h:selectOneMenu
 id="selectCity"
 value="#{selectedCity}"
 required="false">

 <s:selectItems
 value="#{register.cities}"
 var="c"
 label="#{c.postalCode} - #{c.name}"
 />

 <s:convertEntity />
</h:selectOneMenu>

When I submit my form, seam performes validation, but my selectOneMenu validation fails, and then, values are never submited ..... why a selectOneMenu validation can fail ?

Thanks .....

[pmuir]

read the SeamProblemsFAQ on the wiki.