Grails域名get（params.id）在Controller.show（）中工作，但不是Contoller.edit（） [英] Grails domain get(params.id) works in Controller.show() but not Contoller.edit()

问题描述

所以这里有一个有趣的。我有一个2.1.1 Grails应用程序，带有straigt-forward域和带默认脚手架的控制器。我的 show（）方法只用查找和检索域对象def quarterEndAdjustmentInstance = QuarterEndAdjustment.get（params.id）然而，当我调用 edit（）方法时，我得到一个 java.lang.IllegalArgumentException - 参数类型不匹配 on完全相同的调用 def quarterEndAdjustmentInstance = QuarterEndAdjustment.findByID（params.id）我已经确认了params地图传入了ID，并且我尝试了 get（id）， get（params）， findByID（id）， findByID（params） yadayadayada

以下是调用edit方法的show.gsp中的表单submit在控制器中：

 < g：form> 
< fieldset class =buttons> 
< g：hiddenField name =idvalue =$ {quarterEndAdjustmentInstance.id}/> 
< g：link class =editaction =editid =$ {quarterEndAdjustmentInstance.id}>< g：message code =default.button.edit.labeldefault =编辑/>< / g：link> 
 <％ - < g：actionSubmit class =editaction =editvalue =$ {message（code：'default.button.edit.label'，default：'Edit'）} /> - ％GT; 
< / fieldset> 
< / g：表格> 
  

这里有两个来自我的控制器的闭包。 show（）正常工作， edit（）抛出异常。

  def show（）
 {
 //params.each（）{key，value  - > ; println$ {key} = $ {value}}; 
 def quarterEndAdjustmentInstance = QuarterEndAdjustment.get（params.id）//这里是入站参数
 if（！quarterEndAdjustmentInstance）
 {
 flash.message =Quarter End Metric record not在$ {params}中找到
 redirect（action：list，params：params）
} 
 else 
 {
 quarterEndAdjustmentInstance.setFrName（mriUtils.getCompRecipient quarterEndAdjustmentInstance.getCompPayeeID（）））
 return [quarterEndAdjustmentInstance：quarterEndAdjustmentInstance] 
} 
} 
 
 def edit（）
 {
 def quarterEndAdjustmentInstance = QuarterEndAdjustment.get（params.id）
 $ b $ if（！quarterEndAdjustmentInstance）
 {
 flash.message =季末M12调整无法在$ {params}中找到
 redirect（action：list，params：params）
} 
 else 
 {
 quarterEndAdjustmentInstance.setFrName（mriUtils.getCompRecipient（quarterEndAdjustment Instance.getCompPayeeID（）））
 return [quarterEndAdjustmentInstance：quarterEndAdjustmentInstance] 
} 
} 
  

解决方案

默认情况下，Grails会为您的域类创建一个 Long 属性。

如果我没有弄错 get（）是唯一可以转换你的 String 的方法>转换为所需的 Long 。对于其他你需要投入很长时间：

  def quarterEndAdjustmentInstance = QuarterEndAdjustment.findByID（params.long（'id'）） 
  

So here's an interesting one. I've got a 2.1.1 Grails application with straigt-forward domains and controller with default scaffolding. My show() method works just find and retrieves the domain object with def quarterEndAdjustmentInstance = QuarterEndAdjustment.get(params.id) However, when I call the edit() method I get a java.lang.IllegalArgumentException - argument type mismatch on the exact same call def quarterEndAdjustmentInstance = QuarterEndAdjustment.findByID(params.id) I've confirmed the params map is passing in the ID, and I've tried all variations of get(id), get(params), findByID(id), findByID(params) yadayadayada

Here's the form submit in the show.gsp that calls the edit method in the controller:

    <g:form>
        <fieldset class="buttons">
            <g:hiddenField name="id" value="${quarterEndAdjustmentInstance.id}" />
            <g:link class="edit" action="edit" id="${quarterEndAdjustmentInstance.id}"><g:message code="default.button.edit.label" default="Edit" /></g:link> 
            <%-- <g:actionSubmit class="edit" action="edit" value="${message(code: 'default.button.edit.label', default: 'Edit')}"  /> --%>
        </fieldset>
    </g:form>

Here are two closures from my controller. show() works fine, edit() throws the exception.

 def show() 
{   
    //params.each() { key, value -> println "${key} = ${value}" };
    def quarterEndAdjustmentInstance = QuarterEndAdjustment.get(params.id) //here are your inbound params
    if(!quarterEndAdjustmentInstance)
    {
        flash.message = "Quarter End Metric record not found with ${params}"
        redirect(action:"list", params: params)
    }
    else
    {
        quarterEndAdjustmentInstance.setFrName(mriUtils.getCompRecipient(quarterEndAdjustmentInstance.getCompPayeeID()))
        return [quarterEndAdjustmentInstance: quarterEndAdjustmentInstance]
    }
}

def edit() 
{
    def quarterEndAdjustmentInstance = QuarterEndAdjustment.get(params.id)

    if(!quarterEndAdjustmentInstance)
    {
        flash.message = "Quarter End M12 Adjustment not found with ${params}"
        redirect(action:"list", params:params)
    }
    else
    {
        quarterEndAdjustmentInstance.setFrName(mriUtils.getCompRecipient(quarterEndAdjustmentInstance.getCompPayeeID()))
        return [quarterEndAdjustmentInstance: quarterEndAdjustmentInstance]
    }   
}

解决方案

By default, Grails creates a Long attribute for your domain class.

If I'm not mistaken get() is the only method that will transform your String into the required Long. For the others you need to cast to long:

def quarterEndAdjustmentInstance = QuarterEndAdjustment.findByID(params.long('id'))

这篇关于Grails域名get（params.id）在Controller.show（）中工作，但不是Contoller.edit（）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！