This might help: http://www.adobe.com/devnet/flex/articles/daoflex.html
On 11/8/07, Alex Birch <[EMAIL PROTECTED]> wrote: > > > The DataGrid is so amazing. I may be abusing it, yet I would like to > display information to a user and let them update information. Ideally, I > could call a Servlet on a Tomcat server. > > My question is how can I tell which DataRows have been updated by the > user. My hackneyed approach has been to try and clone a version of the > original data, then I was going to compare the data before calling a > httpservice. Unfortunately I haven't found a nice deep copy method to copy > an array. > > Any pointer to an example for updating an editable datagrid, then calling > a servlet (I've found many with the RemoteObject.) > > Here is an example below. > > <?xml version="1.0" encoding="utf-8"?> > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; > layout="absolute" initialize="initApp()"> > <mx:Script> > <![CDATA[ > import mx.rpc.events.ResultEvent; > import mx.collections.ICollectionView; > public var unmodifiedDataProvider:Object = null; > [Bindable] > private var modifiableDataProvider: mx.collections.ICollectionView= > null; > > private function initApp():void{ > this.statesHttpService.send(); > } > > private function stateModelResult(event:ResultEvent):void { > try{ > modifiableDataProvider = > event.result.Requests.Request; > unmodifiedDataProvider = new Object(); > for (var i:int = 0; i < modifiableDataProvider.length ; > i++) > { > unmodifiedDataProvider[i] = > modifiableDataProvider[i].valueOf(); > //Any deep copy method would be immeasurably > appreciated > } > } > catch (err:Error) > { > unmodifiedDataProvider = null; > modifiableDataProvider = null; > this.updateLinkButton.enabled = false; > > } > } > > private function updateInformation():void { > var object:Object; > > > for (var i:int = 0; i < modifiableDataProvider.length; i++) > { > object = modifiableDataProvider[i]; > } > } > ]]> > > </mx:Script> > <mx:HTTPService id="statesHttpService" method="get" url=" > http://www.lifesabirch.org/target.xml"; result="stateModelResult(event)" > /> > <mx:LinkButton x="463" y="85" id="updateLinkButton" label="Update" > click="updateInformation()"/> > > <mx:DataGrid x="66" y="115" id="requestDataGrid" > dataProvider="{modifiableDataProvider}" width="95%" height="95%" > editable="true"> > <mx:columns> > <mx:DataGridColumn dataField="RequestID" headerText="Order Number" > editable="false" /> > <mx:DataGridColumn dataField="Target" headerText="Target" > itemEditor=" mx.controls.TextInput" editorDataField="text" editable="true" > /> > <mx:DataGridColumn dataField="Comments" headerText="Comments" > itemEditor="mx.controls.TextInput " editorDataField="text" editable="true" > /> > </mx:columns> > </mx:DataGrid> > </mx:Application> > > > -- > ~~ > http://www.lifesabirch.org > >
