and which file it should be in, etc....
On Sat, May 3, 2008 at 1:51 PM, dnk <[EMAIL PROTECTED]> wrote:
> Ok, just trying to look through the code sample provided.... a little
> confused due to my old code still being in there.....
>
>
>
>
> On Sat, May 3, 2008 at 12:55 PM, Jim Hayes <[EMAIL PROTECTED]> wrote:
> >
> >
> >
> >
> >
> >
> > It's because the loading of the text file is asynchronous, and in your
> > example
> >
> >
> > var myTxt2:LoadTextFile = new LoadTextFile("file2.txt");
> > // populate my model with the results
> > myprojectmodel.getInstance().mytext2 = myTxt2.data;
> >
> > you access it's data variable immediately after instructing it to load the
> > text.
> >
> > Instead, you need to wait until that load is done before accessing data.
> > I'd probably get the loadtextFile class to raise an event when that
> > happens, have your main app listen for it.
> >
> >
> > public function onCompleteTextLoad(e:Event):void
> > {
> > var vars:URLVariables = new URLVariables(e.target.data);
> > trace("LOOK HERE: " + vars.thetext);
> > this._mydata = vars.thetext;
> > trace("from mydata: " + this._mydata);
> >
> > // If below added, the model is populated
> > // myprojectmodel.getInstance().mytext2 = vars.thetext;
> >
> > this.dispatchEvent(new Event("LoadTextFile.dataloaded"));
> >
> >
> > var myTxt2:LoadTextFile = new LoadTextFile("file2.txt");
> > // populate my model with the results
> > //myprojectmodel.getInstance().mytext2 = myTxt2.data;
> > myTxt2.addEventListener("LoadTextFile.dataloaded", gotData)
> >
> > private function gotData(event:Event):void
> > {
> > var myTxt2:LoadTextFile = LoadTextFile(event.target)
> >
> > myprojectmodel.getInstance().mytext2 = myTxt2.data;
> > myTxt2.removeEventListener("LoadTextFile.dataloaded", gotData);
> > }
> >
> > LoadTextFile will have to extend EventDispatcher.
> >
> > HTH ! (been there myself, when I started!)
> >
> >
> >
> > -----Original Message-----
> > From: [email protected] on behalf of dnk
> > Sent: Sat 03/05/2008 20:22
> > To: flexcoders list
> > Subject: [flexcoders] Why would this assignment to a MVC model return
> null?
> >
> > Ok, I am using a easymvc structure (tom bray version), and i have run
> > into an issue that is killing me!
> >
> > I am simply loading in some vars from a text file, and to do so i
> > wrote a utility class (to make it reusable).
> >
> > Now in my class, if I populate my model var, it works fine. But it
> > makes that class not very reusable.
> >
> > So I added a var to store the result, and made a getter method.
> >
> > Now in my utility class it looks like this:
> >
> > package myproject.util
> > {
> > // for text loading
> > import flash.events.*;
> > import flash.net.*;
> >
> > public class LoadTextFile
> > {
> >
> > private var _mydata:String;
> >
> > public function LoadTextFile(myFile:String)
> > {
> > var req:URLRequest = new URLRequest(myFile);
> > var url_loader:URLLoader = new URLLoader(req);
> > url_loader.addEventListener(Event.COMPLETE, onCompleteTextLoad);
> > url_loader.addEventListener(IOErrorEvent.IO_ERROR, onErrorTextLoad);
> > //trace("called in loadTxtFile: " + myFile);
> > }
> >
> > public function onCompleteTextLoad(e:Event):void
> > {
> > var vars:URLVariables = new URLVariables(e.target.data);
> > trace("LOOK HERE: " + vars.thetext);
> > this._mydata = vars.thetext;
> > trace("from mydata: " + this._mydata);
> >
> > // If below added, the model is populated
> > // myprojectmodel.getInstance().mytext2 = vars.thetext;
> >
> > }
> >
> > public function onErrorTextLoad(e:IOErrorEvent):void
> > {
> > trace("Something wrong! Could not load file.");
> > }
> >
> > public function get data():String
> > {
> > return this._mydata;
> > }
> >
> > }
> > }
> >
> > The traces in the class come back with the proper data. So the _mydata
> > var is populated.
> >
> > Now from my controller: I would have a function that contained
> > something like this:
> >
> > // new instance
> > var myTxt:LoadTextFile = new LoadTextFile("file.txt");
> > // populate my model with the results
> > myprojectmodel.getInstance().mytext = myTxt.data;
> >
> > // another instance
> > var myTxt2:LoadTextFile = new LoadTextFile("file2.txt");
> > // populate my model with the results
> > myprojectmodel.getInstance().mytext2 = myTxt2.data;
> >
> > trace("From Data in controller using getter: " + myTxt.data);
> >
> > And this trace comes back null! WHich means it obviously never
> > populates my model.
> >
> > Why would this happen?
> >
> > It seems to be pretty basic code. But I am driving myself insane!!!!
> >
> > DNK
> >
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