将参数传递给同一页面中的对话框 [英] Pass parameter to dialog in the same page

问题描述

我有一个页面包含一个表单和嵌套在对话框中的其他表单.单击主窗体中的按钮时，我需要将参数传递给对话框

<p:dataTable var="form" value="#{myBean.formList}"><p:commandButton id="selectProduct"update="selectProductForm" oncomplete="selectProductDlg.show()"图像="ui-icon-" ><f:param name="formId" value="#{form.id}"/></p:commandButton></p:dataTable></h:form><p:对话框>...<h:form><p:commandButton action="#{myBean.setSelected}"更新=main_form"oncomplete="if(#{myBean.errorText == 'SUCCESS'}){ selectProductDlg.hide();}"值=秒"></p:commandButton>

我在带有代码的 myBean 中看不到 formId:

if (form == null) {HttpServletRequest req = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();if(req.getParameter("formId") != null) {formId = Long.valueOf(req.getParameter("formId"));}if (formId != null && !"".equals(formId)) {form = formService.findById(formId);}}

我错在哪里谢谢

解决方案

假设bean在view作用域内，只需在datatable列的command按钮的action方法中将其设置为bean属性direclty即可.

>

<p:dataTable var="form" value="#{myBean.formList}"><p:列><p:commandButton id="selectProduct"action="#{myBean.setCurrentForm(form)}"update="selectProductForm" oncomplete="selectProductDlg.show()"图像="ui-icon-"></p:commandButton></p:列></p:dataTable></h:form><p:对话框><h:形式><p:commandButton action="#{myBean.setSelected}"更新=main_form"oncomplete="if(#{myBean.errorText == 'SUCCESS'}){ selectProductDlg.hide();}"值=秒"></p:commandButton></h:form></p:对话框>

如果对话框中有取消按钮，则需要让它的action方法将其设置为null.

无需在 POST 请求中摆弄原始 HTTP 请求参数. 应该尽可能多地仅用于 GET 请求(例如 , ; 等).

I have a page contains a form and other form nested in a dialog. I need to pass parameter to dialog when button clicked in the main form

<h:form>
<p:dataTable var="form" value="#{myBean.formList}">
     <p:commandButton id="selectProduct" 
                            update="selectProductForm" oncomplete="selectProductDlg.show()" 
                            image="ui-icon-" > 
                            <f:param name="formId" value="#{form.id}" />
                </p:commandButton>
</p:dataTable>
</h:form>

<p:dialog>
...<h:form>
<p:commandButton action="#{myBean.setSelected}"
                    update="main_form"
                    oncomplete="if(#{myBean.errorText == 'SUCCESS'}){ selectProductDlg.hide();}"
                    value="Sec">
                </p:commandButton>

i can not see formId in myBean with code:

if (form == null) {
            HttpServletRequest req = (HttpServletRequest) FacesContext
                    .getCurrentInstance().getExternalContext().getRequest();
            if(req.getParameter("formId") != null) {
                formId = Long.valueOf(req.getParameter("formId"));
            }
            if (formId != null && !"".equals(formId)) {
                form = formService.findById(formId);
            } 
        }

where am i wrong thanks

解决方案

Assuming that the bean is in the view scope, just set it as a bean property direclty in the action method of the command button in the datatable column.

<h:form>
  <p:dataTable var="form" value="#{myBean.formList}">
    <p:column>
      <p:commandButton id="selectProduct" 
                       action="#{myBean.setCurrentForm(form)}"
                       update="selectProductForm" oncomplete="selectProductDlg.show()" 
                       image="ui-icon-"> 
      </p:commandButton>
    </p:column>
  </p:dataTable>
</h:form>

<p:dialog>
  <h:form>
    <p:commandButton action="#{myBean.setSelected}"
                     update="main_form"
                     oncomplete="if(#{myBean.errorText == 'SUCCESS'}){ selectProductDlg.hide();}"
                     value="Sec">
    </p:commandButton>
  </h:form>
</p:dialog>

If you have a cancel button in the dialog, you need to let its action method set it to null.

There's no need to fiddle around with raw HTTP request parameters in POST requests. The <f:param> should as much as possible be used in GET requests only (e.g. <h:link>, <h:button>, etc).

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