如何将ice:selectManyCheckbox添加到ice:dataTable? [英] How to add ice:selectManyCheckbox to a ice:dataTable?

问题描述

我有一个<ice:dataTable>，我想向每行添加一个复选框.我尝试添加<ice:selectManyCheckbox>，但是它显示一个空列，并且没有出现该复选框.

I have a <ice:dataTable> and I want to add a checkbox to each row. I tried to add a <ice:selectManyCheckbox>, but it shows an empty column and the checkboxes doesn't appear.

<ice:selectManyCheckbox id="customTransChbx" partialSubmit="true">
    <f:selectItems id="SlctLangItms" value="#{employee.s}" />
</ice:selectManyCheckbox>

<ice:dataTable id="employeedatatable" value="#{employee.model}" var="emp" rows="5">
    <ice:column>
        <ice:checkbox for="customTransChbx" index="#{emp.id}" rendered="true" />
    </ice:column>
</ice:dataTable>

如何通过<ice:dataTable>中的复选框选择多行?

How can I select multiple rows by checkboxes in a <ice:dataTable>?

更新:我还尝试了<ice:selectBooleanCheckbox>和Map:

public class Employee {

    private Map<Long, Boolean> checked = new HashMap<Long, Boolean>();

    public void preRender(ComponentSystemEvent event) throws Exception {
        List<Employee> list = employeeService.getEmployees();

        for (Employee employee : list)
            checked.put(employee.getId(), false);
        }
    }

使用

<ice:dataTable id="employeedatatable" value="#{employee.model}" var="emp" rows="5">
    <ice:column>
        <ice:selectBooleanCheckbox value="#{employee.checked[emp.id]}" />
    </ice:column>
</ice:dataTable>

当尝试以操作方法获取检查列表时，映射中的所有值均为false，甚至包括选定的值.为什么检查后的值没有放在Map中?

When trying to get the checked list in an action method, all the values in the map are false, even the selected ones. Why are the checked values not put in the Map?

UPDATE2:我尝试使用旧的普通html方式，如下所示:

UPDATE2: i tried the old plain html way, as follows:

• 将复选框定义为输入:

• defining the checkbox as input:

<input type="checkbox" name="toDelete" value="#{emp.id}" />

在后备bean方法中获取检查值，如下所示:

getting the checked values in the backing bean method as follows:

HttpServletRequest request = (HttpServletRequest) FacesContext .getCurrentInstance().getExternalContext().getRequest(); String[] checkedValues = request.getParameterValues("toDelete");

HttpServletRequest request = (HttpServletRequest) FacesContext .getCurrentInstance().getExternalContext().getRequest(); String[] checkedValues = request.getParameterValues("toDelete");

问题是checkedValues数组始终为空吗?

problem is that the checkedValues array is always null ?

推荐答案

请确保数据表和按钮的表单相同. strong>.

please make sure that the datatable and the button are in the same form.

这篇关于如何将ice:selectManyCheckbox添加到ice:dataTable?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！