xshuang, below is the code for my CategoryConverter. | import javax.faces.component.UIComponent; | import javax.faces.context.FacesContext; | import javax.faces.convert.ConverterException; | | import org.jboss.seam.Component; | import org.jboss.seam.annotations.Name; | import org.jboss.seam.annotations.faces.Converter; | | import com.datalette.actions.CategoryIntf; | import com.datalette.model.Category; | | @Name("categoryConverter") | @Converter | public class CategoryConverter implements javax.faces.convert.Converter | { | | public Object getAsObject(FacesContext context, UIComponent component, | String value) throws ConverterException | { | Integer i = new Integer(value); | CategoryIntf categoryAction = (CategoryIntf)Component.getInstance("categoryAction"); | return categoryAction.getCategory(i); | } | | public String getAsString(FacesContext context, UIComponent component, | Object value) throws ConverterException | { | return ((Category)value).getId().toString(); | } | } View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4109683#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...