Grails复选框处理 [英] Grails checkbox handling

问题描述

假设我有这个scenerio：

Let's say, i have this scenerio:

但是我有数百个这样的复选框，我需要在提交表单后同时处理所有内容。然后我需要保存到BD基于哪些框被检查和每个块的ID

But let's say i have hundreds of those checkBoxes, which i need to handle everything at same time after submiting a form. I then will need to save to the BD something based on which boxes are checked, and the id of each block

所以，我需要这个：

a）一种方法来知道哪些复选框被选中，在其中几百个
b）每个复选框应该与一个id链接，因此一个具体的动作

a) a way to know which checkboxes are checked, within hundreds of them b) each checkbox should be 'linked' with an id which im gona pass, so that a specific action will be performed.

我有一个< g：each> 标签给我写了整个表，数据库。我非常感谢任何帮助，
感谢高级，RR

I have a <g:each> tag writing me the whole table, reading values from the DB. I would appreciate any help with this, Thanks in advanced, RR

推荐答案

在你的gsp你需要显示所有复选框：

In your gsp you need to display all the checkboxes:

<g:each in="${model}" status="i" var="invoiceItem">
<tr class="${(i % 2) == 0 ? 'odd' : 'even'}">
    <td>
         <g:checkBox name="invoiceItem_${i}"/>
    </td>
   </tr>
</g:each>

在控制器操作中，您需要将所选的复选框映射到您的域对象

In the controller action you need to map the selected checkboxes to your domain objects

List invoiceList = session.invoiceList
params.each {
    if (it.key.contains("invoiceItem_")){
        if (it.value.contains("on")){
            InvoiceItem invoiceItem = invoiceList.get((it.key - "invoiceItem_") as Integer)
        }
    }

}

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