我的域类的代码snipp：

int id
String supplierGroupName
Long orgId
Date dateCreated
static hasMany =  [suppliers:OrganisationUnit] ..

我想捕获每个修改后的属性名称的旧值和新值。但总是得到供应商属性名称的当前值。这是我不想要的。

def beforeUpdate(){
    println "BEFORE UPDATE: " + this.getPersistentValue('suppliers');
}

def afterUpdate(){
    println "AFTER UPDATE: " + this.suppliers;
}

控制台o \ p：

BEFORE UPDATE：[com.xms.core.organisation.OrganisationUnit（13，ABC），com.xms.core.organisation.OrganisationUnit（14，DEF）]

更新后：[com.xms.core.organisation.OrganisationUnit（13，ABC），com.xms.core.organisation.OrganisationUnit（14，DEF）]

Grails收集关联道具名称的所有旧值和新值的最佳方法是什么，主要是供应商？我目前在控制器层中的方法如下：

def multiOldIds = ""
def multiNewIds = ""
Block 1 :
supplierGroupInstance.suppliers.each(){ supplier ->
    if(multiOldIds != ""){
        multiOldIds += ","
    }
    //gets me the comma separated (ex: 1,2,3)
    multiOldIds += supplier.id
}

第2座：

supplierGroupInstance.suppliers.each(){ supplier ->
    ifmultiNewIds != ""){
        multiNewIds += ","
    }
    //gets me the comma separated (ex: 1,2,3)
    multiNewIds += supplier.id
}

块1在supplierGroupInstance.save（flush：true）之前执行，而block 2在save flush之后执行。

然后将旧数据和新数据保存到db ..

if(!(multiOriginalIds.equals(multiNewIds))){
    actionLogService.savePreviousAndCurrentData(domainClass,id,multiOriginalIds,multiOriginalIdsCurrent,"suppliers")
}

因此总结一下.. 我的方法是否更好地捕获hasMany道具的旧值和新值？或者是否有其他方法..请建议。

控制器代码段：

..........

    //Performs the Update method on the Domain
    def update(Long id, Long version) {
        if(domainDebug) println domainName+"update() :params passed ${params}"

        if(domainHasUpdatedByXmsLoginId){
            params.updatedByXmsLoginId = sec.loggedInUserInfo(field:"id")
        }

        def multiOldIds = ""
        def dirtyPropertyNames = ""
        def multiNewIds = ""
            def supplierGroupInstance = SupplierGroup.get(id)
        String domainClass = this.class.getSimpleName().minus("Controller")
        //set the hasmany porperty values
        supplierGroupInstance.suppliers.each(){ supplier ->
        if(multiOldIds != ""){
            multiOldIds += ","
        }
        //gets me the comma separated (ex: 1,2,3)
        multiOldIds += supplier.id
        }
            if (version != null) {
                if (supplierGroupInstance.version > version) {
                    supplierGroupInstance.errors.rejectValue("version", "default.optimistic.locking.failure",
                              [message(code: 'supplierGroup.label', default: 'SupplierGroup')] as Object[],
                              "Another user has updated this SupplierGroup while you were editing")
                    render(view: "edit", model: [supplierGroupInstance: supplierGroupInstance])
                    return
                }
            }

            supplierGroupInstance.properties = params
        //below section is to retrive old and new values for primitive type propertyname
        dirtyPropertyNames = supplierGroupInstance.getDirtyPropertyNames()
        if(dirtyPropertyNames != null && dirtyPropertyNames.size() >0 && id !=null){
            for (dirtyPropertyName in dirtyPropertyNames) {
                 def originalValue = supplierGroupInstance.getPersistentValue(dirtyPropertyName)
                 def currentValue = supplierGroupInstance."${dirtyPropertyName}"
    //               println "current value----> " +currentValue
    //           println "original value----->" + originalValue

                 if(!(originalValue.equals(currentValue))){
actionLogService.savePreviousAndCurrentData(domainClass,id,originalValue,currentValue,dirtyPropertyName)
                 }
            }
        }


            if (!supplierGroupInstance.save(flush: true)) {
                render(view: "edit", model: [supplierGroupInstance: supplierGroupInstance])
                return
            }

        supplierGroupInstance.suppliers.each(){ supplier ->
            if(multiNewIds != ""){
                multiNewIds += ","

            }
            multiNewIds += supplier.id

        }



            if(!(multiOldIds.equals(multiNewIds))){
         actionLogService.savePreviousAndCurrentData(domainClass,id,multiOriginalIds,multiOriginalIdsCurrent,"suppliers")
            }




            flash.message = message(code: 'default.updated.message', args: [message(code: 'supplierGroup.label', default: 'SupplierGroup'), supplierGroupInstance.id])
        if(domainHasLastUpdated){
            redirect(action: "list", params: [sort:"lastUpdated", order:"desc"])
        } else {
            redirect(action: "list")
        }
        }

Answer 1

<{p>

getPersistentValue

适用于域名字段，该字段从hibernate缓存中提取域的原始状态。话虽如此，如果你这样做，这将有用在供应商/ OrganizationUint结束时

beforeUpdate()

。

获取域的集合关联属性的旧值的更好方法

我的域类的代码snipp：

控制台o \ p：

控制器代码段：

1 个答案: