用“变量”解析Grails参数指数 [英] Parsing Grails params with a "variable" index

问题描述

我对Grails相当陌生，我想了解如何用控制器解析某些形式的params，并使用一个计数器变量作为索引？

我有一个表单：

 < g：form controller =configaction =parseReports> 
< div> 
 < g：hiddenField name =reportName $ {allReports.indexOf（each）}value =$ {each}/> 
< / g：每个> 
< g：hiddenField name =reportCountSizevalue =$ {allReports.size（）}/> 
  

...

变量。

在控制器中，我有：

  def reportCount = params.reportCountSize.toInteger（）`
 
 def reportCount0 = params.reportCount0.name.toString（）`
  

这工作正常。

我想知道如何使用循环/索引：

  for（counter in 0..reportCount）{`
 def myReport =$ {params} .reportCount $ {counter } .name.toString（）}`
  

....

我找不到如何让myReport获得params.reportCount0.name.toString（）的表单值，但使用$ {counter}变量？

任何帮助将不胜感激。

谢谢

里程。

解决方案

在cotroller中试试这个。

  for （0..reportCount  -  1中的计数器）{
 String re port = params [reportName $ {counter}] 
 println== $ {counter} === $ {report} =====
} 
  
 pre 
 $ b pre 
 $ b $ p <$ p 
 
 
你也应该在gsp页面上使用你的每个循环。
 $ p> < g：each in =$ {allReports.toList（）}var =eachstatus =i> 
 < / g：每个> 
  

享受。


I am fairly new to Grails, and I would like to understand how to parse some form "params" with a controller, using a counter variable as an index?

I have a form:

<g:form controller="config" action="parseReports">
 <div>
 <g:each in="${allReports.toList()}" var="each" >
 <g:hiddenField name="reportName${allReports.indexOf(each)}" value="${each}" />
 </g:each>
 <g:hiddenField name="reportCountSize" value="${allReports.size()}" />

...

With some hidden variables.

In the controller, I have:

def reportCount = params.reportCountSize.toInteger()`

def reportCount0 = params.reportCount0.name.toString()`

This works fine.

I would like to know how to use a loop / index:

for (counter in 0..reportCount) {`
    def myReport = "${params}.reportCount${counter}.name.toString()}"`

....

I cannot find out how to get myReport to get the form value of params.reportCount0.name.toString(), but use the ${counter} variable?

Any help would be appreciated.

Thanks

Miles.

解决方案

try this in cotroller.

for (counter in 0..reportCount - 1) {
       String report = params["reportName${counter}"]
       println "==${counter}===${report}====="
}

also you should use your each loop on gsp page like this..

<g:each in="${allReports.toList()}" var="each" status="i" >
    <g:hiddenField name="reportName${i}" value="${each}" />
</g:each>

Enjoy.

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