howto display the an enum object internationalized

[hasc]

Hi,

i have some trouble displaying an enum item internationalized. i look for something like that:

<h:outputText value="#{messages[enumObject]}"/>

or

<h:outputText value="#{messages[enumObject]}">
 <s:convertEnum/>
</outputText>

while

enumObject is a valueBinding to a corresponing getter method which returns an enum object.

both ways didn't work for me. does anyone know a way to realize it?

thanks an regards,
hasc

[smurfs]

This is an example of an approach I have used for drop-down lists. Each constant is instantiated with the key defined in the messages properties file:

public enum Salutation {

 MR("salutation-mr-label"),
 MRS("salutation-mrs-label"),
 MS("salutation-ms-label");

 private String labelKey;

 Salutation(String labelKey) {
 this.labelKey = labelKey;
 }

 public String getLabelKey() {
 return labelKey;
 }
}

Need to create a factory to return array of enum values to view

@Name("factories")
public class Factories {

 @org.jboss.seam.annotations.Factory("salutationTypes")
 public Salutation[] getSalutationTypes() {
 return Salutation.values();
 }
}

<f:selectOneMenu id="salutations" value="#{backingBean.salutation}">
 <s:selectItems value="#{salutationTypes}" var="salutation" label="#{messages[salutation.labelKey]}"/>
 <s:convertEnum />
</f:selectOneMenu>

I appreciate this doesn't answer your query directly but it may give you a few clues.

[hasc]

thanks for your reply.

this approach may be a solution but i would appreciate a way where i don't have to "carry" the label in the model. i defined the enumeration like that:

public enum MyEnum {
 VALUE1,
 VALUE2,
 VALUE3
}

now i m looking for a solution where i can display the label internationalized. But if theres no way i will take your solution. so thanks...

[pmuir]

Smurfs isn't putting the label in the model, rather the key to the model. Using jboss-el you could do

<f:selectOneMenu value="#{backingBean.salutation}">
 <s:selectItems value="#{salutations}" var="salutation" label="#{messages[salutation.name()]}"/>
 <s:convertEnum />
</f:selectOneMenu>

with the factory as Smurfs said. You then get have to provide keys for VALUE1, VALUE2 etc.

[pmuir]

sorry, "rather the key for the label in the the model."

[hasc]

i tried it an it works fine.

thanks

[nickarls]

Hi,

What could be the problem when your example works "one-way". I see the labels fine but when I it goes back into the model I get an IllegalArgumentException. Just like it would be trying to put the entire enumeration back into the bound string.

The documentation is not that verbose on the use of ...

[pmuir]

Post your code :)

[nickarls]

Post your code :)

public enum FilterType {

 A("orders.filtering.all"),
 O("orders.filtering.open"),
 C("orders.filtering.closed");

 private String key

 Suodatustyyppi(String key) {
 this.key = key
 }

 public String getKey() {
 return key;
 }

}

 <ice:selectOneRadio value="#{orderBean.filter}">
 <s:selectItems value="#{orderBean.filterTypes}" var="filter"
 label="#{messages[filter.key]}"/>
 <s:convertEnum />
 </ice:selectOneRadio>

PS. Do you work full-time answering questions here? :) Much appreciated for a fresh seam-convert in any case...

[nickarls]

ngh, missed on the preview/submit

orderBean:

 @Factory("filterTypes")
 public FilterType[] getFilterTypes() {
 return FilterType.values();
 }


The radio button would be pointing into a String

[pmuir]

Sometimes it feels like it.

so orderBean.filter is a String? It should be an Enum

FilterType filter;

[lcoetzee]

What we do is the following:

public enum GenderEnum {
 FEMALE, MALE;

 public final static String translatedGenders[][] = {
 {"Female", "Male"},
 {"Vroulik", "Manlik"},
 {"Female - Zulu", "Male -Zulu"},
 {"Female - ndebele", "Male - ndebele"},
 {"Female - xhosa", "Male - xhosa"},
 {"Female - sotho", "Male - sotho"},
 {"Mosadi", "Monna"},
 {"Female - setswana", "Male - setswana"},
 {"Female - siswati", "Male - siswati"},
 {"Female - venda", "Male - venda"},
 {"Female - songa", "Male - songa"} };
}

Which is then accessed (in Java or JSF)

GenderEnum.translatedGenders[userEnvironment.getLanguage().ordinal()]
 [GenderEnum.MALE.ordinal()]

If you want to get a specific translation for a specific enum.

Regards

Louis

[knaas]

What we did was to create an EnumConverter that uses the resource bundle for internationalization. We just defined a convention "packagename.classname.enumvalue=Some text".
If we find something in the resource bundle, use it, otherwise just use the toString value of the enum.

Something like this code.

@Override
 public String getAsString(final FacesContext context, final UIComponent component, final Object object) throws ConverterException
 {
 String retVal = null;
 if (object instanceof Enum)
 {
 Enum instance = (Enum)object;
 final String resourceKey = instance.getClass().getName() + "." + instance.name();
 try
 {
 retVal = ResourceBundle.instance().getString(resourceKey);
 }
 catch (MissingResourceException e)
 {
 //Ignore
 }
 if (StringUtils.isEmpty(retVal))
 {
 retVal = instance.name();
 }
 }
 return retVal;
 }