选择的java DropdownChoice与模型值不同，在ajax更新时更改
我有一个listview，在该listview中有一个
EnumdropDrop-Textfield-DropdownChoice-Ajaxbutton |用于每个项目
第一个下拉列表是货币，第二个是帐户对象，帐户下拉列表中的一个选项是创建一个新帐户，然后以货币命名
创建新帐户时，应为帐户下拉列表中的选定值
这对于第一个帐户很有效，但是第二个和所有后续新创建的帐户都被正确创建并添加到可能性列表中，但它们不是所选的帐户。每次我进行ajax刷新时，所有新创建的项目中的选定帐户都被设置为第一个创建的帐户。有趣的是，当我提交表单时，帐户选择是正确的
package com.trifork.pengeplan.web.components.lists;
import com.trifork.pengeplan.domain.*;
import com.trifork.pengeplan.web.components.choice.EnumDropDownChoice;
import com.trifork.pengeplan.web.components.choice.OwnedAccountCreateNewDropDownChoice;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.PropertyListView;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.model.ResourceModel;
import java.util.List;
/**
* Created by IntelliJ IDEA.
* User: tommysadiqhinrichsen
* Date: 21/09/12
* Time: 11.55
*/
public class MultipleCurrenciesListView extends PropertyListView<FinanceAccountCurrencyMapping> {
IModel<OwnedAccount> ownedAccountIModel;
public MultipleCurrenciesListView(String id, IModel model) {
super(id, new PropertyModel<List<FinanceAccountCurrencyMapping>>(model, "financeAccountCurrencyMappings"));
ownedAccountIModel = model;
}
@Override
protected void populateItem(final ListItem<FinanceAccountCurrencyMapping> item) {
EnumDropDownChoice<MoneyCurrency> moneyCurrency = new EnumDropDownChoice<MoneyCurrency>("moneyCurrency");
moneyCurrency.add(new AjaxFormComponentUpdatingBehavior("onchange") {
@Override
protected void onUpdate(AjaxRequestTarget target) {
MoneyCurrency moneyCurrency = (MoneyCurrency) getFormComponent().getModelObject();
}
});
item.add(moneyCurrency);
item.add(new TextField("financeAccount.accountNumber"));
final OwnedAccountCreateNewDropDownChoice accountForCash = new OwnedAccountCreateNewDropDownChoice("accountForCash", ownedAccountIModel.getObject().getLegalEntity().getOwnedBankAccounts());
accountForCash.add(new AjaxFormComponentUpdatingBehavior("onchange") {
@Override
protected void onUpdate(AjaxRequestTarget target) {
OwnedAccount ownedAccount = (OwnedAccount) getFormComponent().getModelObject();
if (ownedAccount != null && ownedAccount.getId() == -1) {
OwnedAccount newOwnedAccount = new OwnedAccount();
FinanceAccountCurrencyMapping financeAccountCurrencyMapping = item.getModelObject();
financeAccountCurrencyMapping.setAccountForCash(ownedAccount);
newOwnedAccount.setName(financeAccountCurrencyMapping.getOwnedAccount().getName() + " - " + financeAccountCurrencyMapping.getMoneyCurrency().name());
newOwnedAccount.setLegalEntity(financeAccountCurrencyMapping.getOwnedAccount().getLegalEntity());
newOwnedAccount.setAssetOrLiability(AssetOrLiability.ASSET);
newOwnedAccount.setAssetType(AssetType.BANK_ACCOUNT);
newOwnedAccount.setCurrency(financeAccountCurrencyMapping.getMoneyCurrency());
newOwnedAccount.getFinanceAccountCurrencyMappings().add(new FinanceAccountCurrencyMapping(newOwnedAccount));
ownedAccountIModel.getObject().getLegalEntity().getOwnedAccounts().add(ownedAccountIModel.getObject().getLegalEntity().getOwnedAccounts().size() - 1, newOwnedAccount);
accountForCash.setDefaultModelObject(newOwnedAccount);
target.add(getFormComponent().getForm().getPage());
}
}
});
item.add(accountForCash);
item.add(new AjaxButton("deleteFinanceAccount", new ResourceModel("button.delete")) {
@Override
protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
ownedAccountIModel.getObject().getFinanceAccountCurrencyMappings().remove(item.getModelObject());
target.add(this.getForm());
}
@Override
protected void onError(AjaxRequestTarget target, Form<?> form) {
super.onError();
}
});
}
}
有人能告诉我问题出在哪里吗
更新
package com.trifork.pengeplan.web.components.choice;
import com.trifork.pengeplan.domain.OwnedAccount;
import org.apache.wicket.markup.html.form.ChoiceRenderer;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.model.ResourceModel;
import java.util.List;
/**
* Created by IntelliJ IDEA.
* User: tommysadiqhinrichsen
* Date: 18/09/12
* Time: 16.01
* To change this template use File | Settings | File Templates.
*/
public class OwnedAccountCreateNewDropDownChoice extends DropDownChoice<OwnedAccount> {
public OwnedAccountCreateNewDropDownChoice(String id) {
super(id);
List<OwnedAccount> choices = (List<OwnedAccount>) getChoices();
choices.add(new OwnedAccount(-1, new ResourceModel("create.new").getObject()));
setChoices(choices);
init();
}
public OwnedAccountCreateNewDropDownChoice(String id, IModel model) {
super(id, model);
List<OwnedAccount> choices = (List<OwnedAccount>) getChoices();
choices.add(new OwnedAccount(-1, new ResourceModel("create.new").getObject()));
setChoices(choices);
init();
}
public OwnedAccountCreateNewDropDownChoice(String id, List<OwnedAccount> choices) {
super(id, choices);
List<OwnedAccount> choices1 = (List<OwnedAccount>) getChoices();
choices.add(new OwnedAccount(-1, new ResourceModel("create.new").getObject()));
setChoices(choices);
init();
}
public OwnedAccountCreateNewDropDownChoice(String id, List<OwnedAccount> choices, ChoiceRenderer<OwnedAccount> renderer) {
super(id, choices, renderer);
List<OwnedAccount> choices2 = (List<OwnedAccount>) getChoices();
choices.add(new OwnedAccount(-1, new ResourceModel("create.new").getObject()));
setChoices(choices);
init();
}
public OwnedAccountCreateNewDropDownChoice(String id, Model<OwnedAccount> model, List<OwnedAccount> choices, ChoiceRenderer<OwnedAccount> renderer) {
super(id, model, choices, renderer);
List<OwnedAccount> choices3 = (List<OwnedAccount>) getChoices();
choices.add(new OwnedAccount(-1, new ResourceModel("create.new").getObject()));
setChoices(choices);
init();
}
public OwnedAccountCreateNewDropDownChoice(String id, PropertyModel<OwnedAccount> model, List<OwnedAccount> choices, ChoiceRenderer<OwnedAccount> renderer) {
super(id, model, choices, renderer);
List<OwnedAccount> choices4 = (List<OwnedAccount>) getChoices();
choices.add(new OwnedAccount(-1, new ResourceModel("create.new").getObject()));
setChoices(choices);
init();
}
public void init() {
}
public void addChoice(OwnedAccount ownedAccount) {
List<OwnedAccount> choices = (List<OwnedAccount>) getChoices();
choices.add(choices.size() - 1, ownedAccount);
setChoices(choices);
}
}
# 1 楼答案
如果不知道OwnedAccountCreateNewDropDownChoice做了什么，就很难找到问题
但请回顾这句话：
由于您稍后要修改银行帐户，此列表可能会过时
遵循金门规则，你永远不应该从一个模型中取出某个东西放入另一个模型中：
也许这会有所帮助
# 2 楼答案
我发现了问题：）
列表视图在表单中不好，因为列表项无法跟踪其索引，所以无法处理动态更改
我已经根据这个网站上的指南实现了一个列表视图
http://wicketinaction.com/2008/10/building-a-listeditor-form-component/
我工作得很有魅力