如何在grails中显示timeZone选择标签的选项

Question

使用时区创建Customer时，timeZone具有该值。当我显示时区时，我想显示选定的选项。

例如，我想显示SST，萨摩亚标准时间-11：0.0（当前选项）而非太平洋/中途（值）。

我必须在此功能的显示页面中进行更改？

一流的客户{

static constraints = { 
    } 
    String name 
    String timeZone 
} 

在create.gsp：

在show.gsp

<div class="fieldcontain ${hasErrors(bean: customerInstance, field: 'timeZone', 'error')} "> 
    <label for="timeZone"> 
     <g:message code="customer.timeZone.label" default="timeZone" /> 

    </label> 
    <g:if test="${customerInstance?.timeZone}"> 
     <g:timeZoneSelect name="timeZone" value="${TimeZone.getTimeZone(customerInstance?.timeZone)}" /> 
    </g:if> 
    <g:else> 
     <g:timeZoneSelect name="timeZone" value="${customerInstance?.timeZone}" /> 
    </g:else> 
</div> 

：

<span class="property-value" aria-labelledby="timeZone-label"><g:fieldValue bean="${customerInstance}" field="timeZone"/></span> 

Answer 1

我已经找到了解决办法

def show(Long id) { 
     def customerInstance = Customer.get(id) 
     if (!customerInstance) { 
      flash.message = message(code: 'default.not.found.message', args: [message(code: 'customer.label', default: 'Customer'), id]) 
      redirect(action: "list") 
      return 
     } 

     def date = new Date() 
     TimeZone tz = TimeZone.getTimeZone(customerInstance.timeZone); 
     def shortName = tz.getDisplayName(tz.inDaylightTime(date), TimeZone.SHORT); 
     def longName = tz.getDisplayName(tz.inDaylightTime(date), TimeZone.LONG); 
     def offset = tz.rawOffset; 
     def hour = offset/(60 * 60 * 1000); 
     def min = Math.abs(offset/(60 * 1000)) % 60; 
     def timeZone= shortName+", "+longName+" "+hour+": "+min 
     [customerInstance: customerInstance,timeZone:timeZone] 
    } 

In Show.gsp：

<span class="property-value" aria-labelledby="timeZone-label">${timeZone}</span>