如何使用AJAX更新Wicket DataView? [英] How can I update a Wicket DataView with AJAX?

问题描述

我需要按Wicket DataView 中显示的 PsDoctrans 的用户列表进行AJAX完全过滤.

I need to AJAXfully filter by users list of PsDoctrans which is shown in a Wicket DataView.

final TextField txtName= new TextField("user");

final PSDocDP dp = new PSDocDP("username");
DataView<PsDoctrans> dataView = new DataView<PsDoctrans>("unproc", dp)
{
    @Override
    protected void populateItem(final Item<PsDoctrans> item)
    ...
};

PSDocDP 是:

public class PSDocDP extends SortableDataProvider<PsDoctrans>
{...}

final WebMarkupContainer wmc = new WebMarkupContainer("container"); 
wmc.add(dataView); 
wmc.setOutputMarkupId(true);

AjaxButton butFind=new AjaxButton("find"){
    @Override
    protected void onSubmit(AjaxRequestTarget target, Form<?> form)
    {               
        String value=(String)txtName.getModelObject();
        dp = new PSDocDP(value);

        target.addComponent(wmc);
    }
};

提交后，没有任何变化.该程序显示了一些数据，但未过滤.如何进行过滤?

After submitting, nothing changes. The program shows some data, but it isn't filtering. How can I make filtering happen?

推荐答案

我使用与此类似的构造，因此它应该可以工作.

I use constructions comparable to this, so it should work.

您是否真的在回调中创建了一个新的"dp"对象.您应该只更改数据提供者的状态-组件应如何获得更改的提供者.

Do you really create a new "dp" object in the callback. You should simply change the state of the data provider - how should the component ever get the changed provider.

    @Override
    protected void onSubmit(AjaxRequestTarget target, Form<?> form)
    {               
        String value=(String)txtName.getModelObject();
-->        dp.setName(value);
        target.addComponent(wmc);
    }

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