Flex DropdownList不显示正确的值 [英] Flex DropdownList does not show the correct values

问题描述

我有一个Flex Spark dropdownList，其中我需要显示Provider FirstName，LastName：

 < s：DropDownList id =providerList
 dataProvider ={model.practiceProviderList.practiceProviders}
 labelField =provider.providerName.firstName/> 
  

但输出仅显示[object Object]& [object Object]，因为DB中有2个提供者，不显示实际值。

The PracticeProviderList.as：

  [Bindable] 
 [RemoteClass（alias =model.PracticeProviderList）] 
 public class PracticeProviderList extends PracticeProviderListBase {
 
 private var _practiceProviderList：ArrayCollection; 
 
 public function get practiceProviders（）：ArrayCollection 
 {
 return _practiceProviderList; 
} 
 
 public function set practiceProviders（value：ArrayCollection）：void 
 {
 _practiceProviderList = value; 
} 
  

PracticeProvider对象：

  public class PracticeProvider {
 
 private var _practiceId：Number; 
 private var _practiceProviderId：Number; 
 private var _provider：Provider; 
 
 public function set practiceId（value：Number）：void {
 _practiceId = value; 
} 
 public function get practiceId（）：Number {
 return _practiceId; 
} 
 
 public function set practiceProviderId（value：Number）：void {
 _practiceProviderId = value; 
} 
 public function get practiceProviderId（）：Number {
 return _practiceProviderId; 
} 
 
 public function set provider（value：Provider）：void {
 _provider = value; 
} 
 public function get provider（）：Provider {
 return _provider; 
} 
  

提供商的providerName：PersonName作为其中一个字段& PersonName具有firstName：String& lastName：String

我需要在下拉列表中显示名字，姓氏。如果有人可以在这方面帮助，我将不胜感激。

谢谢

哈希

解决方案

labelField不能连接2个值。使用 labelFunction

如果我了解你的数据模型，就像这样：

  public function myLabelFunction（item：Object）：String {
 return item ['providerName'] ['PersonName'] ['firstName'] +''+ item ['providerName'] ['PersonName'] ['lastName'] 
} 
  

I have a Flex Spark dropdownList in which I need to show the Provider FirstName,LastName:

   <s:DropDownList id="providerList"
            dataProvider="{model.practiceProviderList.practiceProviders}"
    labelField="provider.providerName.firstName"/>

But the output shows only [object Object] & [object Object] as there are 2 providers in the DB and does not show the actual values.

The PracticeProviderList.as:

[Bindable]
    [RemoteClass(alias="model.PracticeProviderList")]
    public class PracticeProviderList extends PracticeProviderListBase {

        private var _practiceProviderList:ArrayCollection;

        public function get practiceProviders():ArrayCollection
        {
            return _practiceProviderList;
        }

        public function set practiceProviders(value:ArrayCollection):void 
        {
            _practiceProviderList = value;
        }

The PracticeProvider Object:

public class PracticeProvider  {

        private var _practiceId:Number;
        private var _practiceProviderId:Number;
        private var _provider:Provider;

        public function set practiceId(value:Number):void {
            _practiceId = value;
        }
        public function get practiceId():Number {
            return _practiceId;
        }

        public function set practiceProviderId(value:Number):void {
            _practiceProviderId = value;
        }
        public function get practiceProviderId():Number {
            return _practiceProviderId;
        }

        public function set provider(value:Provider):void {
            _provider = value;
        }
        public function get provider():Provider {
            return _provider;
        }

The Provider has providerName:PersonName as one of it's fields & PersonName has firstName:String & lastName:String

I need to show the First Name, Last Name in the dropdownlist. I would appreciate if someone can help in this regard.

Thanks

Harish

解决方案

The labelField can't concatenate 2 values. Use a labelFunction instead.

If I understand your data model, Something like this:

public function myLabelFunction(item:Object):String{
 return item['providerName']['PersonName']['firstName'] + ' ' + item['providerName']['PersonName']['lastName']
}

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