DataGrid and XML with only 1 entry

Question

Hi All,
I have a datagrid set up that is displaying an xml file.
Seems to work fine until there is only 1 entry in my xml file, then
I get no content displayed in the datagrid.
Here is my code that I am using for my app,
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" initialize="xmlDat.send()">
<mx:Script>
<![CDATA[
import mx.controls.dataGridClasses.DataGridColumn;
import mx.collections.ArrayCollection;
import mx.rpc.events.ResultEvent;
[Bindable]
private var myData:ArrayCollection;
private function resultHandler(event:ResultEvent):void{
myData = event.result.projects.project;
]]>
</mx:Script>
<mx:HTTPService id="xmlDat" url="data/whiteboard.xml"
result="resultHandler(event)"/>
<mx:Panel layout="absolute" title="Project Whiteboard"
height="600" width="1000" verticalCenter="-1"
horizontalCenter="-1">
<mx:DataGrid dataProvider="{myData}" width="980"
height="560" y="0" x="0" verticalScrollPolicy="on"
variableRowHeight="true" editable="false">
<mx:columns>
<mx:DataGridColumn headerText="Due Date"
dataField="dueDate" width="85"/>
<mx:DataGridColumn headerText="DVD ID" dataField="dvdId"
width="65"/>
<mx:DataGridColumn headerText="School Name"
dataField="schoolName" width="275"/>
<mx:DataGridColumn headerText="City" dataField="city"
width="100"/>
<mx:DataGridColumn headerText="St" dataField="state"
width="35"/>
<mx:DataGridColumn headerText="Qty" dataField="quantity"
width="45"/>
<mx:DataGridColumn headerText="Image Prep"
dataField="imagePrep" itemRenderer="render.imgRender"/>
<mx:DataGridColumn headerText="Video Prep"
dataField="videpPrep" itemRenderer="render.vidRender"/>
<mx:DataGridColumn headerText="Sequencing"
dataField="sequencing" itemRenderer="render.seqRender"/>
<mx:DataGridColumn headerText="FTP" dataField="ftp"
itemRenderer="render.ftpRender"/>
</mx:columns>
</mx:DataGrid>
</mx:Panel>
</mx:Application>

Answer 1

quote:
Originally posted by:
peterent
When there is only 1 entry in the result you don't have an
Array any more, you have a scalar. That's because the Player
doesn't know you intend or want to always have an Array.
Look up ArrayUtils and the toArray function. That should
help.
This sounds like just what I need. The only problem I am
having now is how to implement it into my code. When I add it to
the code it works for when I have one entry but if it is more than
that then no data shows.
Anyone have some ideas on this? Here is my updated code that
works for one entry in the xml but not more than that.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" creationComplete="initApp()">
<mx:Script>
<![CDATA[
import mx.controls.dataGridClasses.DataGridColumn;
import mx.collections.ArrayCollection;
import mx.rpc.events.ResultEvent;
import mx.utils.ArrayUtil;
[Bindable]private var myData:ArrayCollection;
private var uintPollInterval:uint = 10000;
private var timer:Timer = new Timer(uintPollInterval);
private function initApp():void
xmlDat.send();
timer.addEventListener(TimerEvent.TIMER, onTimer);
timer.start();
private function onTimer(event:TimerEvent):void
xmlDat.send();
timer.start();
]]>
</mx:Script>
<mx:HTTPService id="xmlDat" url="data/whiteboard.xml"
result="resultHandler(event)"/>
<mx:Panel layout="vertical" title="Project Whiteboard"
height="100%" width="1000" verticalCenter="-1"
horizontalCenter="-1">
<mx:DataGrid
dataProvider="{ArrayUtil.toArray(xmlDat.lastResult.projects.project)}"
width="980" height="100%" y="0" x="0" verticalScrollPolicy="on"
variableRowHeight="true" editable="false">
<mx:columns>
<mx:DataGridColumn headerText="Due Date"
dataField="dueDate" width="85"/>
<mx:DataGridColumn headerText="DVD ID" dataField="dvdId"
width="65"/>
<mx:DataGridColumn headerText="School Name"
dataField="schoolName" width="275"/>
<mx:DataGridColumn headerText="City" dataField="city"
width="100"/>
<mx:DataGridColumn headerText="St" dataField="state"
width="35"/>
<mx:DataGridColumn headerText="Qty" dataField="quantity"
width="45"/>
<mx:DataGridColumn headerText="Image Prep"
dataField="imagePrep" itemRenderer="render.imgRender"/>
<mx:DataGridColumn headerText="Video Prep"
dataField="videpPrep" itemRenderer="render.vidRender"/>
<mx:DataGridColumn headerText="Sequencing"
dataField="sequencing" itemRenderer="render.seqRender"/>
<mx:DataGridColumn headerText="FTP" dataField="ftp"
itemRenderer="render.ftpRender"/>
</mx:columns>
</mx:DataGrid>
<mx:ControlBar horizontalAlign="right">
<mx:Button label="Update" click="xmlDat.send()"/>
</mx:ControlBar>
</mx:Panel>
</mx:Application>