Thanks. I now have this:
IModel dropDownModel = new Model() { protected Object load() { preferences.put(0, "some choice"); preferences.put(1, "some other choice"); preferences.put(2, "and another choice"); return preferences; //get the HashMap } };DropDownChoice profileChoice = new DropDownChoice("profile", dropDownModel, new IChoiceRenderer() {
public String getDisplayValue(Object object) { return preferences.get(object); } public String getIdValue(Object object, int index) { return object.toString(); } });where my Form is given a CompoundPropertyModel with one of the parameters being "profile". But, I'm getting an error about my choices being null.
java.lang.NullPointerException: List of choices is null - Was the supplied 'Choices' model empty?
I can feel I'm close but what have I missed? cheers, Steve On 12 Dec 2008, at 18:14, Igor Vaynberg wrote:
new ichoicerenderer<integer>() { Object getDisplayValue(integer object) { return choices.get((integer)object); } String getIdValue(integer object, int index) { return object.tostring(); } } -igor On Fri, Dec 12, 2008 at 9:46 AM, Steve Swinsburg <s.swinsb...@lancaster.ac.uk> wrote:Hi all,I've been over all the DDC examples but am still stumped by this one. I have a model (pojo) which holds user preferences, the preference for each itembeing an Integer. ie public class UserPreferences { int preferenceOne; int preferenceTwo constructor getters and setters for the ints above }I now want to render a form that has a DDC for each of the preferences in my model. The list of choices that needs to go into the DDC should come from a HashMap or similar (in reality it will come from a database) because I want to store the number attached to the item selected, not the display string.ie LinkedHashMap choices = new LinkedHashMap() choices.put("43", "Something"); choices.put("64", "Something else"); choices.put("87", "blah"); which should render the select list as: <select name="preferenceOne"> <option value="43">Choice Something</option> <option value="64">Choice Something else</option> <option value="87">blah</option> <select>When clicking submit, the value (ie 43) should be attached to the relevant item in the Model (ie preferenceOne would be 43), then I can save it to thedatabase.Everything I've tried with ChoiceRenderer etc seems to get mixed up with thedifferent data models etc.Can someone please present a snippet of code on how to do this, I'm at my wits end. I cannot for the life of me find any explicit info separating themodels/data as above. thanks, Steve--------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
smime.p7s
Description: S/MIME cryptographic signature