Groovy/Grails—如何检查域类中的关系?

换句话说,如何检查作为参数传递给标记的字符串是否对应于“hasMany”关系,并获取相应的域名?

请注意,我可以实例化域类并对其执行getClass—也许它在属性中?我会查的,但任何意见都非常感谢。

代码如下:

*标记以输出域级信息 *

def get_domain_info = { attrs, body ->


    // get the domain name for lookup on the Misc Fields XML table
    def id = attrs['id']


    def domainName = attrs['domain_name']

    // get the domainInstance
    def domainInstance = grailsApplication.getArtefact("Domain",domainName)?.
    getClazz()?.get(id)


    def dataNames = attrs['data_names']

    def dataNameArray = dataNames.split(",")

    out << "<div class=\"dialog\">"

    for(dataName in dataNameArray) {
        out << "<tr class=\"prop\">"
        out << "<td valign=\"top\" class=\"name\">"  + dataName + "</td>"
        def dataValue = domainInstance[dataName.trim()]
        if (dataValue == null){
            dataValue = ""
        }
        def valueLine
        if ( dataValue.class == java.sql.Timestamp){
            valueLine = "<td valign=\"top\" class=\"value\">"  +
            dataValue.format("d MMM yyyy") +  "</td>"
        }
        else {
            valueLine = "<td valign=\"top\" class=\"value\">"  + dataValue + "</td>"
        }
        out << valueLine
        out << "</tr>"

    }