Grails控制器未获取控制器中下拉列表的当前值

我在视图中有一个下拉列表g:select，它显示域类的列表。每当单击save按钮时，我想打印其中的任何值。下面是视图中的脚本

<g:select params="[tablename: storehouseInstance?.tablename]" name="tablename"     from="${Warehouse.list()}" optionKey="id" optionValue="${Warehouse.list()}" value="tablename"
noSelection="['':'Choose Table']"
onchange="${remoteFunction (
controller: 'warehouse',
action: 'updateSelect',
params:  "'warehouse.id=' + this.value + storehouseInstance?.tablename" ,
param: "this.value",
update: [success:'fieldSelection'] //update: 'fieldselection'
)}"/>

我将tablename设置为“1”，而不是类似于“MYTESTVALUE”的值

---

请提供任何帮助。

假设仓库的name属性为name，请尝试以下操作：

<g:select params="[tablename: storehouseInstance?.tablename]" 
    name="tablename"     
    from="${Warehouse.list()}" 
    optionKey="name"     // I changed this line
    optionValue="name"   // I changed this line too
    value="tablename"
    noSelection="['':'Choose Table']"
    onchange="${remoteFunction (
        controller: 'warehouse',
        action: 'updateSelect',
        params:  "'warehouse.id=' + this.value + storehouseInstance?.tablename" ,
        param: "this.value",
        update: [success:'fieldSelection']
)}"/>

在g中：选择发送到服务器的参数由optionKey定义，下拉列表中显示的值由optionValue定义

在一边 从MVC的角度来看，您不应该在GSP中进行查询，例如Warehouse.list。相反，您应该在服务/控制器中检索所需的数据，并通过模型将其传递给视图GSP

<g:select params="[tablename: storehouseInstance?.tablename]" 
    name="tablename"     
    from="${Warehouse.list()}" 
    optionKey="name"     // I changed this line
    optionValue="name"   // I changed this line too
    value="tablename"
    noSelection="['':'Choose Table']"
    onchange="${remoteFunction (
        controller: 'warehouse',
        action: 'updateSelect',
        params:  "'warehouse.id=' + this.value + storehouseInstance?.tablename" ,
        param: "this.value",
        update: [success:'fieldSelection']
)}"/>