Ah...I understand what you are doing. Is this the best way though? I can see how it's EASY.
But putting a reference to the details canvas w/in the master canvas tightly couples them together. Some might say they that a master and detail should be tightly coupled but I go for a loosely coupled approach...which the LSO does. Do you have a more loosely coupled approach? Should I be using custom events to achieve this? --- In [email protected], "Tracy Spratt" <[EMAIL PROTECTED]> wrote: > > Honestly, using LSO for this is nuts. If I am understanding fully. > > > > Say the value you want is a record id, and you can select it in a > datagrid or list component in the main app, and need to pass it into the > component. > > > > In your component, create a public property. You can implement it as a > public var or with a setter function. If you want the change of the > value to initiate some action, like call a data service, use a setter. > > > > When you instantiate the component, pass in the value you want using > binding: > > <myCodeBehindCanvasMainApp ..... > > ... > > <mx:Script... > > [Bindable]var _sRecordId:String; > > > > private function onSelectRecord(oEvent:Event)... > > _sRecordId = oEvent.target.selectItem.ID; > > > > ... > > <myCodeBehindCanvasCOMPONENT recordId="{_sRecordId }" > > > > ... > > > > In myCodeBehindCanvasCOMPONENT: > > ... > > /** Setter function */ > > public function set recordId(s:String):void { > > myDataService.send({recid:s}) > > ... > > > > Tracy > > > > ________________________________ > > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of stlum9495 > Sent: Friday, October 05, 2007 7:46 PM > To: [email protected] > Subject: [flexcoders] Re: Passing ID from master to detail > > > > Hi Tracy, > > Thanks for replying. > > Yes, my mxml are in different files. I should prob have said this > earlier -- my canvases are done using the code behind pattern, so I > have a mxml for each canvas, and behind it is an .as that extends > Canvas. > > Perhaps I should have specified more. For this example, say there is > a datagrid with a bunch of user information. when you click on a row > / user, a new canvas is selected in the viewstack w/ more user > detailed information. > > Like I said, currently I'm using a Local Shared Obj...what is your > recommended way? > > Thanks > > --- In [email protected] <mailto:flexcoders%40yahoogroups.com> > , "Tracy Spratt" <tspratt@> wrote: > > > > There are much simpler ways. > > > > > > > > If your two canvases are in the same mxml file(class) then they share > > the the same scope and you can bind or access values directly. If they > > are implemented in different mxml files, then it is a tiny bit more > > complicated. > > > > > > > > Same scope > > > > Declare an id in any mx tag you want to be able to access. Then you > can > > access values by doing something like this: > > > > in AS: > > > > myText1.text = myText2.text; > > > > myText1.text = myComboBox.selectedItem.myProperty > > > > > > > > Binding In mxml: > > > > <mx:Text text="{myText2.text}" ... > > > > <mx:Text text="{myComboBox.selectedItem.myProperty}" ... > > > > > > > > If myText1 and myText2 are in different scope(different mxml files), > > post, and I will explain how to do that. > > > > > > > > Tracy > > > > > > > > > > > > ________________________________ > > > > From: [email protected] <mailto:flexcoders%40yahoogroups.com> > [mailto:[email protected] <mailto:flexcoders%40yahoogroups.com> > ] On > > Behalf Of stlum9495 > > Sent: Friday, October 05, 2007 10:21 AM > > To: [email protected] <mailto:flexcoders%40yahoogroups.com> > > Subject: [flexcoders] Passing ID from master to detail > > > > > > > > Hi, > > > > I've been programming for awhile, but am new to Flex and was wondering > > what the best way of passing values from screen to screen is. > > > > Currently, I have two canvases which have a master detail > > relationship. When I click on a button in the master canvas, I want > > to pass the record id to the detail canvas so that the detail canvas > > can query the server for the details data. simple master detail. > > > > To code this in flex, what I did was when the button was clicked on > > the master, I saved the record id into a Local Shared Object, and when > > my Detail canvas appears, I grab the id from said Local Shared Object > > and make my server side request. > > > > This works fine, but I was wondering -- is this the Best Practice way? > > I haven't seen much by way of design patterns etc for flex > > pages(I've seen the AS book) so was wondering if I should be doing > > this differently. > > > > Thanks > > >
