Aha, I see. Why would you suggest am xml based model over a class based one?
Tracy Spratt <[EMAIL PROTECTED]> wrote: By dataModel, are you
referring to the ShoppingCart class you posted? You have to put the data into
it. Get the data from the server, however you wish, and in the result handler,
assign the data to an instance of the data model class, using the methods or
properties it provides. Then bind the form elements to propeties in the model.
Now, I would suggest using an XML object instance as the data model. In the
result handler, assign the result xml to an instance variable typed as XML.
Then bind the form elements to that:
<mx:Text [EMAIL PROTECTED]
?>
Tracy
---------------------------------
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of mark
goldin
Sent: Monday, December 31, 2007 11:45 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Two way binding
I am probably a complete dumb. But dataModel does not have dataProvider
property. How do I pull data into model then?
Tracy Spratt <[EMAIL PROTECTED]> wrote:
Or the short answer, the same way you got the data into the
dataProvider for the DataGrid.
Tracy
---------------------------------
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of
Douglas Knudsen
Sent: Monday, December 31, 2007 10:22 AM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Two way binding
That's a wholly different thread. You would use WebService,
HTTPservice, or RemoteObject to perform some sort of server call. Take a look
at the docs on these tags and also at the examples on Adobe.com. For a
ColdFusion based example, you can check this out
http://www.acfug.org/index.cfm?fa=meetings.meetingdetail&EventID=177
DK
On Dec 31, 2007 10:14 AM, mark goldin <[EMAIL PROTECTED]> wrote:
And how data from server gets into the Model?
Douglas Knudsen <[EMAIL PROTECTED] > wrote:
What's wrong with this?
<mx:TextInput text="{ someReferenceToAModel.property }" />
Now, you can use the Binding tag to bind the value in the above back to the
source, your datagrid in this case, but its not really a good idea, though
YMMV.
DK
On Dec 31, 2007 9:33 AM, markgoldin_2000 <[EMAIL PROTECTED]> wrote:
I am trying to figure out what both ways of data binding are.
Basically we have two subjects for data binding: DataGrid and a Form.
With DataGrid it is pretty clear: dataProvider. But with form? It
does not have such a dataProvider property (Which is in my opinion it
should have). So, what's a solution for that? DataModel? Which it
turn does not have dataProvider either. But it does have a source.
Source of what? Data? Ok, let's stick to dataModel. But then I am
reading that it's better to use class-based models. Here is an
example of class-based model form Help:
package
{
[Bindable]
public class ShoppingCart {
public var items:Array = [];
public var total:Number = 0;
public var shippingCost:Number = 0;
public function ShoppingCart() {
}
public function addItem(item:Object, qty:int = 1,
index:int = 0):void {
items.splice(index, 0, { id: item.id,
name: item.name,
description: item.description,
image: item.image,
price: item.price,
qty: qty });
total += parseFloat(item.price) * qty;
}
public function removeItemAt(index:Number):void {
total -= parseFloat(items[index].price) * items[index].qty;
items.splice(index, 1);
if (getItemCount() == 0)
shippingCost = 0;
}
public function getItemCount():int {
return items.length;
}
public function getTotal():Number {
return total;
}
}
}
Two questions:
1. How the data is getting into a picture here?
2. How am I using this model in my mxml file?
Sorry if I am asking something obvious, but I am just having problem
understanding why data-centric environment does not have a straight
way of binding data both ways. All I would want is to assign a data
source to my form and then specify data fields for each control in
the form. Simple as this. Is this possible in Flex?
Thanks
--
Douglas Knudsen
http://www.cubicleman.com
this is my signature, like it?
--
Douglas Knudsen
http://www.cubicleman.com
this is my signature, like it?
