可以请任何人告诉我如何从选择从选择标签的多个值 - Grails的
<g:select multiple="multiple" ...
我在create.gsp
<g:select name="validator.id" multiple="multiple" optionKey="id" from="${com.project.Validator.list()}" value="${validators}" />
有这个获得多个值,这是OperationLogContoller .groovy
def create = {
def operationLogInstance = new OperationLog()
operationLogInstance.properties = params
operationLogInstance.validator = Validator.get(params.validatorId)
operationLogInstance.operation = Operation.get(params.operationId)
return [operationLogInstance: operationLogInstance]
}
def save = {
def operationLogInstance = new OperationLog(params)
println(params.validator)
operationLogInstance.validator = Validator.get(params.validator.id);
if (operationLogInstance.save(flush: true))
flash.message = "${message(code: 'default.created.message', args: [message(code: 'operationLog.label', default: 'OperationLog'), operationLogInstance.id])}"
}
如果我从select中选择一个,它可以很好地工作,但如果我选择两个,我会得到fo llowing例外:
groovy.lang.MissingMethodException: No signature of method: com.akent.Validator.get() is applicable for argument types: (java.lang.String, java.lang.String) values: [3, 4]
Possible solutions: get(java.lang.Object), getId(), getIp(), getAt(java.lang.String), getAll(), ident()
你需要验证是一个一对多的关系,以支持单OperationLog保存多个验证。 – ataylor
感谢你快速回复@ataylor,但他们已经在完全相同的关系 ** Validator.groovy:** '静态的hasMany = [operationlog:OperationLog]' ** OperationLog.groovy:** '静belongsTo = [Validator]' – supp