【发布时间】：2015-04-29 14:31:09
【问题描述】：
当我尝试显示我的一个域的视图时遇到问题。我建立了一个方法来总结一些数量，但我有这个错误，我不知道如何解决它。我知道可变奖励不存在，但我在我的域中有这个值。这是控制器中唯一给我错误的方法的代码。
URI /Rewards/customer/show/1
Class groovy.lang.MissingPropertyException
Message No such property: awards for class: rewards.Customer
Around line 14 of grails-app/services/rewards/CalculationsService.groovy
11:
12: def getTotalPoints(customerInstance){
13: def totalAwards = 0
14: customerInstance.awards.each{
15: totalAwards = totalAwards + it.points
16: }
17: customerInstance.totalPoints = totalAwards
Around line 33 of grails-app/controllers/rewards/CustomerController.groovy
30:
31: def show(Long id){
32: def customerInstance = Customer.get(id)
33: customerInstance = calculationsService.getTotalPoints(customerInstance)
34: [customerInstance: customerInstance]
35: }
36:
控制器（CustomerController.groovy）
package rewards
class CustomerController {
static scaffold = true
def calculationsService
def show(Long id){
def customerInstance = Customer.get(id)
customerInstance = calculationsService.getTotalPoints(customerInstance)
[customerInstance: customerInstance]
}
模特儿
class Customer {
String firstName
String lastName
Long phone
String email
Integer totalPoints
static hastMany = [awards:Award, orders:OnlineOrder]
static constraints = {
phone()
firstName(nullable: true)
lastName(nullable: true)
email(nullable: true, email: true)
totalPoints(nullable: true)
}
}
模特奖
package rewards
class Award {
Date awardDate
String type
Integer points
static belongsTo = [customer:Customer]
static constraints = {
}
}
服务（CalculationsService.groovy）
package rewards
import grails.transaction.Transactional
@Transactional
class CalculationsService {
def serviceMethod() {
}
def getTotalPoints(customerInstance){
def totalAwards = 0
customerInstance.awards.each{
totalAwards = totalAwards + it.points
}
customerInstance.totalPoints = totalAwards
return customerInstance
}
}
【问题讨论】：
-
能否提供型号Customer的代码？
-
MODEL COSTUMER class Customer { String firstName String lastName Long phone String email Integer totalPoints static hastMany = [awards:Award, orders:OnlineOrder] 静态约束 = { phone() firstName(nullable: true) lastName(可空：真）电子邮件（可空：真，电子邮件：真）总点数（可空：真）}}
-
尝试运行 grails clean 看看是否有帮助
-
不，我清理了项目，但我有同样的错误
-
您最近是否添加了“awards”属性？您是否有机会在没有此属性的情况下在数据库中插入客户？如果是这样，您需要清理数据库
标签： grails grails-domain-class grails-controller grails-services