在更改父属性时清除依赖属性值

Question

我有一个父属性 OrganizationId 和 attributes- ProjectId ，它依赖于 OrganizationId 。因此，在 clearing/updating OrganizationId ProjectId 应该是 removed.In 当前清除 OrganizationId 的情况下，我们无法 select 任何 ProjectId，尽管现有的 ProjectId 值仍然显示在页面上。

<af:inputComboboxListOfValues id="OrganizationCode"
    popupTitle="#{ResourcesGenBundle['Header.SearchandSelect.Searchandselectanobjectusingad']}: #{bindings.OrganizationCode.hints.label}"
    value="#{bindings.OrganizationCode.inputValue}"
    label="#{bindings.OrganizationCode.hints.label}"
    model="#{bindings.OrganizationCode.listOfValuesModel}"
    required="#{bindings.OrganizationCode.hints.mandatory}"
    columns="#{bindings.OrganizationCode.hints.displayWidth}"
    shortDesc="#{bindings.OrganizationCode.hints.tooltip}"
    searchDesc="#{bindings.OrganizationCode.hints.tooltip}"
    autoSubmit="true"
    partialTriggers="DeliveryName"
    valueChangeListener="#{CreatePickWaveBean.onOrganizationCodeChange}"
    binding="#{CreatePickWaveBean.organizationCode}">

<af:inputListOfValues id="projCostingProjectNumberId"
    popupTitle="#{ResourcesGenBundle['Header.SearchandSelect.Searchandselectanobjectusingad']}: #{bindings.ProjCostingProjectNumber.hints.label}"
    value="#{bindings.ProjCostingProjectNumber.inputValue}"
    label="#{wshpickreleaseuiBundle['ColAttr.ProjectCostingProjectNumber.ProjectPVO.ProjectCostingProjectNumber']}"
    model="#{bindings.ProjCostingProjectNumber.listOfValuesModel}"
    required="#{bindings.ProjCostingProjectNumber.hints.mandatory}"
    columns="#{bindings.ProjCostingProjectNumber.hints.displayWidth}"
    shortDesc="#{bindings.ProjCostingProjectNumber.hints.tooltip}"
    autoSubmit="true"
    binding="#{CreatePickWaveBean.pjcProjectNumber}"
    valueChangeListener="#{CreatePickWaveBean.onPjcNumberChange}">

public void onOrganizationCodeChange(ValueChangeEvent valueChangeEvent) {
    updateEVH(getOrganizationCode());

    private void updateEVH(EditableValueHolder evh) {
    if (evh != null)
        evh.setSubmittedValue(null);
}

Answer 1

尝试重置值或设置值null for inputListOfValues OrganizationId changed

您已经将 projectId 组件的绑定设置为 "#{CreatePickWaveBean.pjcProjectNumber}" 所以你可以在 ProjectId

的 Value change listener 方法中使用下面的代码

this.getPjcProjectNumber().setValue(null);

或

this.getPjcProjectNumber().resetValue();

在更改父属性时清除依赖属性值

Clear dependent attribute values on changing parent attribute

oracle-adf

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