如何解决如何使ajax在t:datatable在t:datalist中的t:datatable列中工作?
我是JSF的新手。就我而言,我想显示几个表(为此目的,我正在使用数据列表-在运行时将知道表的数量),并且在每个数据表行中,我都需要在选中复选框后执行一些处理程序(没有任何提交按钮-它稍后再致电。
在下面的代码中
<f:ajax listener="#{dataListTry.run(o)}" event="change" render="some_datatable_id"/>
将在提交按钮后被调用,但是我需要在选中复选框后刷新,而不提交按钮。如果我使用不带数据列表的数据表,则回调调用没有任何问题。 如何在数据列表中的数据表中使回调工作?
代码示例:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:t="http://myfaces.apache.org/tomahawk"
>
<h:body>
<h:form id="some_example_form">
<t:dataList id="some_data_list"
var="dataListTry"
value="#{packageGroups.packageGroupList}" rowIndexVar="pos">
<t:div>
<t:outputLabel title="label"/>
<t:outputText value="Table_#{pos}"/>
</t:div>
<t:selectBooleanCheckbox title="External">
<f:ajax event="change" listener="#{dataListTry.run}" render=":some_example_form"/>
</t:selectBooleanCheckbox>
<t:column>
<t:dataTable id="some_datatable_id"
forceId="true"
forceIdIndex="true"
value="#{dataListTry.packageItems}"
var="o">
<t:column>
<h:outputText value="#{o.prefix}"/>
</t:column>
<t:column defaultSorted="false" sortable="false" width="28px">
<t:selectBooleanCheckbox value="#{o.selected}">
<f:ajax render="some_datatable_id"/>
<f:ajax event="change" listener="#{dataListTry.run(o)}"/>
</t:selectBooleanCheckbox>
</t:column>
</t:dataTable>
</t:column>
</t:dataList>
<br/>
<h:commandButton value="Submit" action="demo" forceId="true"/>
<h:commandButton value="MoveBack" action="demo" forceId="true" actionListener="#{packageGroups.moveBack()}"/>
</h:form>
</h:body>
</html>
而豆类是: PackageItem:
@ManagedBean(name = "packageItem")
@SessionScoped
public class PackageItem {
public boolean selected;
public String prefix;
public PackageItem(String prefix) {
this.prefix = prefix;
}
public boolean isSelected() {
return selected;
}
public void setSelected(boolean selected) {
this.selected = selected;
setPrefix("selected after submit");
}
public String getPrefix() {
return prefix;
}
public void setPrefix(String prefix) {
this.prefix = prefix;
}
}
PackageGroup:
@ManagedBean(name = "packageGroup")
@SessionScoped
public class PackageGroup {
private List<PackageItem> packageItems;
private int value;
private String idGroup;
private String resultValue = "Created";
public PackageGroup(String groupId,int groupName,String value,String value2) {
this.idGroup = groupId;
this.value = groupName;
packageItems = new ArrayList<>();
packageItems.add(new PackageItem(value));
packageItems.add(new PackageItem(value2));
}
public PackageGroup() {
}
public List<PackageItem> getPackageItems() {
return packageItems;
}
public void setPackageItems(List<PackageItem> packageItems) {
this.packageItems = packageItems;
}
public void run() {
doClickAction();
}
public void run(PackageItem p) {
doClickAction();
this.resultValue = p.prefix;
}
private void doClickAction() {
packageItems.forEach(e -> e.setPrefix("selected!"));
}
public int getValue() {
return value;
}
public void setValue(int value) {
this.value = value;
}
}
PackageGroups:
@ManagedBean(name = "packageGroups")
@SessionScoped
public class PackageGroups {
private List<PackageGroup> packageGroupList;
public PackageGroups() {
packageGroupList = new ArrayList<>();
packageGroupList.add(new PackageGroup("100",-1,"one","two"));
packageGroupList.add(new PackageGroup("200",-2,"three","four"));
}
public void moveBack() {
packageGroupList.clear();
packageGroupList.add(new PackageGroup("100","four"));
}
public List<PackageGroup> getPackageGroupList() {
return packageGroupList;
}
public void setPackageGroupList(List<PackageGroup> packageGroupList) {
this.packageGroupList = packageGroupList;
}
}
生成的html(仅用于视图-不适用于stackoverflow):
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><body>
<form id="some_example_form" name="some_example_form" method="post" action="/JavaServerFaces_war_exploded/faces/demo.xhtml" enctype="application/x-www-form-urlencoded">
<input type="hidden" name="some_example_form" value="some_example_form" />
<div><label title="label">
</label>Table_0</div><script type="text/javascript" src="/JavaServerFaces_war_exploded/faces/javax.faces.resource/jsf.js?ln=javax.faces&stage=Development"></script><input id="some_example_form:some_data_list:0:j_idt8" type="checkbox" name="some_example_form:some_data_list:0:j_idt8" value="true" onchange="mojarra.ab('some_example_form:some_data_list:0:j_idt8',event,'change','some_example_form')" title="External" />
<table id="some_datatable_id[0]">
<tbody id="some_datatable_id[0]:tbody_element">
<tr><td>one</td><td width="28px"><input id="some_datatable_id[0]:0:j_idt13" type="checkbox" name="some_datatable_id[0]:0:j_idt13" value="true" onchange="jsf.util.chain(document.getElementById('some_datatable_id[0]:0:j_idt13'),'mojarra.ab(\'some_datatable_id[0]:0:j_idt13\',\'change\',0)',\'valueChange\',\'some_datatable_id[0]\')'); return false;" /></td></tr>
<tr><td>two</td><td width="28px"><input id="some_datatable_id[0]:1:j_idt13" type="checkbox" name="some_datatable_id[0]:1:j_idt13" value="true" onchange="jsf.util.chain(document.getElementById('some_datatable_id[0]:1:j_idt13'),'mojarra.ab(\'some_datatable_id[0]:1:j_idt13\',\'some_datatable_id[0]\')'); return false;" /></td></tr>
</tbody></table>
<div><label title="label">
</label>Table_1</div><input id="some_example_form:some_data_list:1:j_idt8" type="checkbox" name="some_example_form:some_data_list:1:j_idt8" value="true" onchange="mojarra.ab('some_example_form:some_data_list:1:j_idt8','some_example_form')" title="External" />
<table id="some_datatable_id[1]">
<tbody id="some_datatable_id[1]:tbody_element">
<tr><td>three</td><td width="28px"><input id="some_datatable_id[1]:0:j_idt13" type="checkbox" name="some_datatable_id[1]:0:j_idt13" value="true" onchange="jsf.util.chain(document.getElementById('some_datatable_id[1]:0:j_idt13'),'mojarra.ab(\'some_datatable_id[1]:0:j_idt13\',\'some_datatable_id[1]\')'); return false;" /></td></tr>
<tr><td>four</td><td width="28px"><input id="some_datatable_id[1]:1:j_idt13" type="checkbox" name="some_datatable_id[1]:1:j_idt13" value="true" onchange="jsf.util.chain(document.getElementById('some_datatable_id[1]:1:j_idt13'),'mojarra.ab(\'some_datatable_id[1]:1:j_idt13\',\'some_datatable_id[1]\')'); return false;" /></td></tr>
</tbody></table>
<br /><input type="submit" name="some_example_form:j_idt15" value="Submit" /><input type="submit" name="some_example_form:j_idt16" value="MoveBack" /><input type="hidden" name="javax.faces.ViewState" id="javax.faces.ViewState" value="-6485444455087447596:-6234064892138587883" autocomplete="off" />
</form></body>
</html>
在发布的html视图中,如果您选中Table_%下的复选框,它将执行并更改其他两个复选框的名称(例如,如果您选中Table_0,则一个和两个将更改其名称)。 但是,如果您选中附近的复选框(例如,一个和两个),它们将仅在执行按钮提交后才更改其名称,但是我需要在单击它们后更改它们,而无需 需要调用按钮提交。
解决方法
最后找到了解决方案。如果forceId和forceIdIndex不会设置为true,则ajax回调有效。
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