Re: [flexcoders] modellocator and double bindings

Fri, 07 Jul 2006 12:56:07 -0700

holy creations batman!  sounds like a good reason.  Now, would adding a creationPolicy="all" to the root application tag address this maybe?

DK

On 7/7/06, Moishe Groger <[EMAIL PROTECTED]> wrote:
Binding seems to take even if local controls haven't been created yet.  So if you're double-binding is between a null control and an always-available model locator, the values in the model locator should be corrupted before the control is created.
 
On the other hand, if a local variable is used the double-binding doesn't acually start binding into the model until the local controls are created.
 
Moishe Groger

From: [email protected] [mailto:[email protected]] On Behalf Of Douglas Knudsen
Sent: Thursday, July 06, 2006 11:06 PM

To: [email protected]
Subject: [flexcoders] modellocator and double bindings

Ok, before the big hoorah relase of FB 2 and cairngorm2 I had a app
that has a few forms in it bound to a VO hanging out in the
modellocator. I used double bindings to display and update values in
the VO like this

<mx:Binding source="{mymodel.myVO.homeAddress.address1}"
destination="txtAddress1.text" />
<mx:Binding source="{txtAddress1.text}"
destination="mymodel.myVO.homeAddress.address1" />

<mx:TextInput width="100%" id="txtAddress1" />

things worked swell. Then came the update to Flez 2 and cairngorm and
teh above double binding attack bombs. The txtAddrss1 input box is
diplayed empty and gets updated as empty too. Yuk!

THe approach I have found to work is to use a local var as a pointer
and bind to it. wierd. So this works
[Bindable]
localAddy: Address = mymodel.myVO.homeAddress;

<mx:Binding source="{localAddy.address1}" destination="txtAddress1.text" />
<mx:Binding source="{txtAddress1.text}" destination="localAddy.address1" />

<mx:TextInput width="100%" id="txtAddress1" />

Any thoughts?

--
Douglas Knudsen
http://www.cubicleman.com
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