I am a Rails developer and very new to Flex. I have to Value Objects that receive data from the server -- UsedVehicleVO and StyleVO. Each UsedVehicle belongs to a Style, so in my UsedVehicleVO I have a styleId. I am able to retrieve the used vehicles and styles from the server but I cant map any used vehicle to its style.
I am able to display the styles in a data grid with the dataProvider = "model.styles" and can display the used vehicles in a data grid with the dataProvider = "model.usedVehicles". But in the Used Vehcle data grid I cant display the style[name] attribute. Thanks for any help.
Here is my code:
ListUsedVehcles view
<?xml version="1.0" encoding="utf-8"?>
<mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml"
width="100%" height="100%"
label="Used Vehicles">
<mx:Script>
<![CDATA[
import com.rapidcarsearch.Horizon.model.RCSModelLocator;
import com.rapidcarsearch.Horizon.model.UsedVehicle;
import com.rapidcarsearch.Horizon.model.Style;
import com.rapidcarsearch.Horizon.util.CairngormUtils;
[Bindable]
public var model:RCSModelLocator = RCSModelLocator.getInstance();
]]>
</mx:Script>
<mx:DataGrid dataProvider="{model.usedVehicles}"
width="100%" height="100%">
<mx:columns>
<mx:DataGridColumn dataField="id" headerText="Key"/>
<mx:DataGridColumn dataField="style.name" headerText="Style" />
<mx:DataGridColumn dataField="stock" headerText="Stock Number"/>
<mx:DataGridColumn dataField="vin" headerText="VIN"/>
<mx:DataGridColumn dataField="price" headerText="Price"/>
<mx:DataGridColumn dataField="internetPrice" headerText="Internet Price"/>
<mx:DataGridColumn dataField="transmission" headerText="Transmission"/>
</mx:columns>
</mx:DataGrid>
</mx:VBox>
UsedVehicleVO
package com.rapidcarsearch.Horizon.vo
{
[RemoteClass(alias="UsedVehicleVO")]
[Bindable]
public class UsedVehicleVO
{
public var id:int;
public var stock:String;
public var vin:String;
public var mileage:int;
public var price:int;
public var internetPrice:int;
public var transmission:String;
public var equipment:String;
public var comment:String;
public var ownerType:String;
public var ownerId:int;
public var active:Boolean;
public var enteredInventory:Date;
public var createdAt:Date;
public var updatedAt:Date;
public var styleId:int;
}
}
StyleVO
package com.rapidcarsearch.Horizon.vo
{
[RemoteClass(alias="StyleVO")]
[Bindable]
public class StyleVO
{
public var id:int;
public var year:int;
public var name:String;
public var doors:int;
public var gvrwRange:String;
public var installedTechnicalEquipment:String;
public var baseMsrp:int;
public var baseInvoice:int;
public var destination:int;
public var createdAt:Date;
public var updatedAt:Date;
}
}
ModelLocator
package com.rapidcarsearch.Horizon.model
{
import com.adobe.cairngorm.model.IModelLocator;
import com.rapidcarsearch.Horizon.vo.StyleVO;
import com.rapidcarsearch.Horizon.vo.UsedVehicleVO;
import mx.collections.ArrayCollection;
import mx.collections.ListCollectionView;
[Bindable]
public class RCSModelLocator implements IModelLocator
{
// workflow states
public static const VIEWING_SPLASH_SCREEN:int = 0;
public static const VIEWING_MAIN_APP:int = 1;
public static const VIEWING_STYLES:int = 2;
// Public properties
public var usedVehicles:ListCollectionView;
public var styles:ListCollectionView;
public var styleIDMap:Object;
public var workflowState:int = VIEWING_SPLASH_SCREEN;
// Mappings from Value Objects
public function setUsedVehiclesFromVOs(usedVehicleVOs:ArrayCollection):void {
var usedVehiclesArray:Array = [];
for each(var item:UsedVehicleVO in usedVehicleVOs) {
usedVehiclesArray.push(UsedVehicle.fromVO(item));
}
usedVehicles = new ArrayCollection(usedVehiclesArray);
}
public function setStylesFromVOs(styleVOs:ArrayCollection):void {
var stylesArray:Array = [];
for each(var item:StyleVO in styleVOs) {
stylesArray.push(Style.fromVO(item));
}
setStyles(stylesArray);
}
public function setStyles(stylesArray:Array):void {
styleIDMap = {};
for each(var style:Style in stylesArray) {
styleIDMap[style.id] = style;
}
styles = new ArrayCollection(stylesArray);
}
public function getStyle(styleID:int):Style {
if (styleIDMap == null) return null;
return styleIDMap[styleID]
}
// Singleton Stuff
private static var modelLocator:RCSModelLocator;
public static function getInstance():RCSModelLocator {
if(modelLocator == null) {
modelLocator = new RCSModelLocator();
}
return modelLocator;
}
public function RCSModelLocator()
{
if (modelLocator != null) {
throw new Error("Only one RCSModelLocator instance may be instantiated.")
}
}
}
}
UsedVehicle Model
package com.rapidcarsearch.Horizon.model
{
import com.rapidcarsearch.Horizon.vo.UsedVehicleVO;
public class UsedVehicle
{
[Bindable]
public var id:int;
[Bindable]
public var style:Style;
[Bindable]
public var stock:String;
[Bindable]
public var vin:String;
[Bindable]
public var mileage:int;
[Bindable]
public var price:int;
[Bindable]
public var internetPrice:int;
[Bindable]
public var transmission:String;
[Bindable]
public var equipment:String;
[Bindable]
public var comment:String;
[Bindable]
public var ownerType:String;
[Bindable]
public var active:Boolean;
[Bindable]
public var enteredInventory:Date;
public function UsedVehicle(
id:int,
style:Style,
stock:String,
vin:String,
mileage:int,
price:int,
internetPrice:int,
transmission:String,
equipment:String,
comment:String,
ownerType:String,
active:Boolean,
enteredInventory:Date)
{
this.id = id;
this.style;
this.stock = stock;
this.vin = vin;
this.mileage = mileage;
this.price = price;
this.internetPrice = internetPrice;
this.transmission = transmission;
this.equipment = equipment;
this.comment = comment;
this.ownerType = ownerType;
this.active = active;
this.enteredInventory = enteredInventory;
}
public function toVO():UsedVehicleVO {
var usedVehicleVO:UsedVehicleVO = new UsedVehicleVO();
usedVehicleVO.id = id;
usedVehicleVO.styleId = style.id;
usedVehicleVO.stock = stock;
usedVehicleVO.vin = vin;
usedVehicleVO.mileage = mileage;
usedVehicleVO.price = price;
usedVehicleVO.internetPrice = internetPrice;
usedVehicleVO.transmission = transmission;
usedVehicleVO.equipment = equipment;
usedVehicleVO.comment = comment;
usedVehicleVO.ownerType = ownerType;
usedVehicleVO.active = active;
usedVehicleVO.enteredInventory = enteredInventory;
return usedVehicleVO;
}
public static function fromVO(usedVehicleVO:UsedVehicleVO):UsedVehicle {
var model:RCSModelLocator = RCSModelLocator.getInstance();
return new UsedVehicle(
usedVehicleVO.id,
model.getStyle(usedVehicleVO.styleId),
usedVehicleVO.stock,
usedVehicleVO.vin,
usedVehicleVO.mileage,
usedVehicleVO.price,
usedVehicleVO.internetPrice,
usedVehicleVO.transmission,
usedVehicleVO.equipment,
usedVehicleVO.comment,
usedVehicleVO.ownerType,
usedVehicleVO.active,
usedVehicleVO.enteredInventory);
}
}
}
