JSF - Richfaces，处理提交的表单数据，然后确认继续或取消 [英] JSF - Richfaces, process submitted form data and then confirm to continue or cancel

问题描述

我想在提交表单时显示一个确认对话框来连续或取消保存操作。我有一个带有保存按钮的表单，它正在调用一个动作方法来保留表单中的数据。
单击保存按钮时，在表单数据持久化之前，将在服务器端读取一个文件。来自文件的数据将被加入到表单数据中，然后表单数据将被保留。我需要一些表单中的值来定义哪个文件将被读取。到目前为止没有问题。当FileNotFoundException被抛出或文件中的必需数据未被找到时，我想显示一个确认对话框来连续或取消保存操作带有消息。

I want to show a confirmation dialog to continiue or cancel a save operation when a form is submitted. I have a form with a save button which is calling an action methode to persist data in the form. When save button is clicked, a file will be readed on serverside before the form data is persisted. Data from the file will be joined into form data and then te form data will be persisted. I need some values from the form to define which file will be readed. There is no problem so far. When a FileNotFoundException throwed or the neccessary data from the file is not found, then i want to show a confirmation dialog to continiue or cancel save operation with caused message.

是否有人有一些例子或任何想法如何处理这个？我需要使用a4j吗？谢谢。
我正在使用Rifchfaces 3.3.3和Seamframework 2.2。

Does anybody have some examples or any ideas how to handle this? Do i need to use a4j? Thanks. I am using Rifchfaces 3.3.3 and Seamframework 2.2.

推荐答案

起初我必须更正我的问题标题。 不是正在处理提交的表单数据，而是一些表单数据，将在验证后提交。

At first i have to correct my question title. It is not going on "processing submitted form data" but a form data that will be submitted after some validation.

现在的解决方案。

例如我的表单中有以下内容：

For example I have following in my form:

• 某些文件夹

• some filelds

a4j：commandButton重新渲染字段并执行doSomeStuff（）操作

an a4j:commandButton to reRender the fields and perform doSomeStuff() action

一个隐藏的h：或a4j：commandButton提交表单。

an hidden h: or a4j:commandButton to submit the form.

1-用户点击'fake'提交按钮，这是一个a4j：commandButtton，

1- User clicks on 'fake' submit button which is an a4j:commandButtton,

2- reRender属性中的Ajax调用更新字段

2- Ajax call updates fields in reRender attribute

3-之后，方法doSomeStuff（）执行与rerendered字段值

3- After that,method doSomeStuff() is performed with rerendered field values

4-最终Javascript将运行提交形式与否。

4- In the end Javascript will run to submit form or not.

表单：

<h:form id="myForm">
<h:inputText id="name" value="#{personHome.person.name}"/>
<h:inputText id="surname" value="#{personHome.person.surname}"/>    

<a:commandButton value="Save" reRender="name, surname" 
            action="#{personHome.doSomeStuff()}" 
            oncomplete="return checkMessage('#{personHome.success}')" 
            id="a4jSave"    />

<h:commandButton id="save" value="Save"
                    action="#{personHome.persist}"
style="visibility:hidden" /> 

</h:form>

JavaScript：

JavaScript:

<script  language="javascript">        

           function checkMessage(success) {
                 if(success =='false') 
                 {
                    return confirm('Do you want to submit this form?') ? submitForm() : false;
                 }   else {
                           submitForm ();
             }
             }

            function submitForm() {
                document.getElementById('myForm:save').click(); 
                return false;
            }               

        </script>  

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