在GSP页面上显示枚举值,然后将它们绑定到数据库中

Question

我有一个用例,我需要首先enum在GSP页面上显示值作为下拉列表,让用户选择其中一个值,然后最终将数据绑定到域.

所以我在GSP上的代码看起来像我的枚举 MyEnum

<g:select from="${MyEnum.getAllEnumList()}" optionValue="name" name="duration"/>

我的枚举是

public enum MyEnum {

    MIN15('15 Minutes'),
    MIN30('30 Minutes'),
    HOUR1('1 Hour'),
    HOUR2('2 Hours'),
    HOUR5('5 Hours'),
    HOUR8('8 Hours'),
    HALFDAY('half day'),
    FULLDAY('full day')

    private final String name
    private final String displayName

    public static final List<MyEnum> getAllEnumList() {
        [MIN15,MIN30,HOUR1,HOUR2,HOUR5,HOUR8,HALFDAY,FULLDAY]
    }

    public String toString() {
        return displayName
    }

    MyEnum(String name,String displayName) {
        this.name = name
        this.displayName = displayName;
    }

}

当我点击页面时,它显示如下错误:

Error processing GroovyPageView: Error executing tag <g:form>: Error evaluating expression [MyEnum.getAllEnumList()] on line [37]: java.lang.NoClassDefFoundError: Could not initialize class ENUM.MyEnum at D:/myspace/projects/IcepushpluginSampleApp/grails-app/views/util/test.gsp:46

有任何想法吗 ？？？？

Answer 1

这就是我过去的做法.这样你就得到了i18n的支持.

普遍优惠制

<g:select name="duration" from="${MyEnum.values()}" valueMessagePrefix="ENUM.MyEnum" />

messages.properties

ENUM.MyEnum.MIN15=15 Minutes
ENUM.MyEnum.MIN30=30 Minutes
ENUM.MyEnum.HOUR1=1 Hour
ENUM.MyEnum.HOUR2=2 Hours
ENUM.MyEnum.HOUR5=5 Hours
ENUM.MyEnum.HOUR8=8 Hours
ENUM.MyEnum.HALFDAY=half day
ENUM.MyEnum.FULLDAY=full day