单击第一个复选框时如何检查另一个复选框?我的复选框列表从数据文件中检索 [英] How to check another checkbox when click first checkbox? My checkbox list retrieve from datafile

问题描述

我是jsf的新手.我的复选框列表从数据表中检索.如果选中了documentId为101的复选框，则系统应自动选择另一个为documentId 102的复选框.如何编写此问题的代码?

I am new in jsf. My checkbox list retrieve from datatable. if checkbox with documentId 101 selected, system should auto select another checkbox which documentId 102. How to code this problem?

<p:dataTable id="popup1" var="comp1" rows="10" 
   value="#{ExaBackingBean.managedBean.popupcomp1List}" 
   editable="true" 
   selection="#{ExaBackingBean.managedBean.popupcomp1Select}" 
   rowKey="#{comp1.documentId}" rowIndexVar="index"> 
  <ac:paginator for="popup1"></ac:paginator> 

<p:column style="width:3px;text-align:center;" > 
<p:selectBooleanCheckbox value="#{comp1.selected}"> 
   <p:ajax listener="#{ExaBackingBean.ckechboxSelectPairingAction(comp1.documentId)}" partialSubmit="true" process="@this" update="@([id$=CompChecklist])" /> 
</p:selectBooleanCheckbox> 
</p:column> 

// ExaBackingBean
public void ckechboxSelectPairingAction(int documentId) throws Exception { 

if (documentId == 101) { 
    System.out.println("documentId test"+documentId); 
    --- checkbox101 & checkbox102 will check
}

推荐答案

首先，您要显示许多复选框，然后应使用selectManyCheckbox而不是selectBooleanCheckbox.

First of all, you want to show many check boxes, then you should to use selectManyCheckbox instead of selectBooleanCheckbox.

让我们创建一个伪示例，如何根据其他示例选择一些值:

Let's create pseudo example, how to choose some value depending other:

HTML Cloet

<p:selectManyCheckbox id="basic" value="#{bean.selectedItems}">
    <f:selectItems value="#{bean.availableItems}" />
    <p:ajax listener="#{bean.someLogic}" update="someComponent"/>
</p:selectManyCheckbox>

---

BackedBean

private Map<String, String> availableItems; // +getter (no setter necessary)
private List<String> selectedItems; // +getter +setter

@PostConstruct
public void init() {
    availableItems = new LinkedHashMap<String, String>();
    availableItems.put("Document1 label", "document1");
    availableItems.put("Document2 label", "document2");
    availableItems.put("Document3 label", "document3");
}

public void someLogic() {
    boolean contains = selectedItems.contains("document1");
    if (contains) {
        selectedItems.add("document2");
    }
}

这篇关于单击第一个复选框时如何检查另一个复选框?我的复选框列表从数据文件中检索的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！