Just conceptually:
Model:
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";>
<mx:XML id="accidentsGeneral" format="e4x">
<general>
<dateofaccident>{dateofaccident.text}
</dateofaccident>
<otherrailroadinvolved>
{otherrailroadinvolved.selectedItem.data}</otherrailroadinvolved>
<otherfilenumber>{dateofaccident.text}
</otherfilenumber>
<railroadrespfortrack>
{dateofaccident.selectedItem.data}</railroadrespfortrack>
</general>
</mx:XML>
</mx:Application>
Form:
...
xmlns:moduleCode="accidents.ModuleCode.*"
....
<mx:Form x="218.5" y="0" width="450" height="606"
borderStyle="outset" id="frmGeneral">
<mx:FormItem label="Date of Accident (dd/mm/yyyy)">
<mx:DateField
dataProvider="{accidentsGeneral.dateofaccident}"
id="dateofaccident"/>
</mx:FormItem>
<mx:FormItem label="Other RailRoad Involved"
width="356">
<mx:ComboBox
dataProvider="{accidentsGeneral.otherrailroadinvolved}"
id="otherrailroadinvolved"></mx:ComboBox>
</mx:FormItem>
<mx:FormItem label="File Number">
<mx:TextInput
text="{accidentsGeneral.otherfilenumber}" id="otherfilenumber"
width="72"/>
</mx:FormItem>
<mx:FormItem label="RailRoad Responsible For Track">
<mx:ComboBox
dataProvider="{accidentsGeneral.railroadrespfortrack}"
id="railroadrespfortrack"></mx:ComboBox>
</mx:FormItem>
....
data assignment:
accidentsGeneral = event.result as XML;
--- In [email protected], "Tracy Spratt" <[EMAIL PROTECTED]> wrote:
>
> I can't understand what you have from your description. Post the
> relevant code snippets.
>
> Tracy
>
>
>
> ________________________________
>
> From: [email protected]
[mailto:[EMAIL PROTECTED] On
> Behalf Of mark goldin
> Sent: Wednesday, January 02, 2008 1:34 PM
> To: [email protected]
> Subject: RE: [flexcoders] Re: Two way binding
>
>
>
> Alright. Is the following correct:
>
> Inside of a model I have it nodes bound to form items. In the form I
> have it items bound to model's nodes, and xmlmodelvar =
event.result as
> XML will pull data into the model as well as show int in the form's
> controls?
>
> Tracy Spratt <[EMAIL PROTECTED]> wrote:
>
> The simplest is to declare an instance variable typed as XML:
>
> var _xmlEmployee:XML;
>
> Then assign the event.result as XML in a result handler:
>
> _xmlEmployee = event.result as XML;
>
> If you want to use the declarative style, do:
>
> <mx:XML id="xmlEmployee" />
>
> And in the result handler, do:
>
> xmlEmployee = event.result as XML;
>
> Tracy
>
>
>
> ________________________________
>
>
> From: [email protected]
> [mailto:[EMAIL PROTECTED] On Behalf Of markgoldin_2000
> Sent: Wednesday, January 02, 2008 12:59 PM
> To: [email protected]
> Subject: [flexcoders] Re: Two way binding
>
> Are you talking about something like this:
> <?xml version="1.0"?>
> <!-- Models\XMLBinding.mxml -->
> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml
> <http://www.adobe.com/2006/mxml> ">
> <mx:XML id="myEmployee" format="e4x">
> <employee>
> <name>
> <first>{firstName.text}</first>
> <last>{lastName.text}</last>
> </name>
> <department>{department.text}</department>
> <email>{email.text}</email>
> </employee>
> </mx:XML>
> <mx:TextInput id="firstName"/>
> <mx:TextInput id="lastName"/>
> <mx:TextInput id="department"/>
> <mx:TextInput id="email"/>
> </mx:Application>
>
> If it is then how do I let data from the server into this
model?
>
> --- In [email protected]
> <mailto:flexcoders%40yahoogroups.com> , "Tracy Spratt" <tspratt@>
> wrote:
> >
> > But don't use mx:Model, that creates the nested dynamic
object
>
> structure
> > I mentioned.
> >
> >
> >
> > Use mx:XML, or use an instance variable typed as XML, and
> assign it
> in a
> > result handler.
> >
> >
> >
> > Tracy
> >
> >
> >
> > ________________________________
> >
> > From: [email protected]
> <mailto:flexcoders%40yahoogroups.com>
> [mailto:[email protected]
> <mailto:flexcoders%40yahoogroups.com> ] On
> > Behalf Of mark goldin
> > Sent: Monday, December 31, 2007 1:18 PM
> > To: [email protected]
> <mailto:flexcoders%40yahoogroups.com>
> > Subject: RE: [flexcoders] Two way binding
> >
> >
> >
> > Let me make sure I understand.
> >
> > You are talking about something like this:
> >
> >
> >
> > <?xml version="1.0"?>
> > <!-- Models\ModelTagEmptyString.mxml -->
> > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml
> <http://www.adobe.com/2006/mxml> "
> > layout="absolute">
> > <mx:Model id="employeemodel" source="httpmodelsource">
> > </mx:Model>
> > </mx:Application>
> > where httpmodelsource returns the following xml:
> >
> >
> >
> > <employees>
> > <employee>
> > <name>John Doe</name>
> > <phone>555-777-66555</phone>
> > <email>jdoe@</email>
> > <active>true</active>
> > </employee>
> > <employee>
> > <name>Jane Doe</name>
> > <phone>555-777-66555</phone>
> > <email>jndoe@</email>
> > <active>true</active>
> > </employee>
> > </employees>
> >
> >
> >
> > Tracy Spratt <tspratt@> wrote:
> >
> > Simplicity. Less code. Maintainability. Standardization,
> well
> > known API.
> >
> > Note that in the scenario I describe, the simplicity
produces
> a
> > dependency between the client data model and the data
> transport. If
> > someone changes the XML you are consuming, you will have to
> change
> the
> > code. For some this is unacceptable and they require level
of
> > abstraction between the transport and the model. It is just
up
> to
> your
> > particular requirements.
> >
> > Tracy
> >
> >
> >
> > ________________________________
> >
> >
> > From: [email protected]
> <mailto:flexcoders%40yahoogroups.com>
> > [mailto:[email protected]
> <mailto:flexcoders%40yahoogroups.com> ] On Behalf Of mark goldin
> > Sent: Monday, December 31, 2007 12:36 PM
> > To: [email protected]
> <mailto:flexcoders%40yahoogroups.com>
> > Subject: RE: [flexcoders] Two way binding
> >
> > Aha, I see. Why would you suggest am xml based model over a
> > class based one?
> >
> > Tracy Spratt <tspratt@> 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]
> > <mailto:[EMAIL PROTECTED]> ...?>
> >
> > Tracy
> >
> >
> >
> > ________________________________
> >
> >
> > From: [email protected]
> <mailto:flexcoders%40yahoogroups.com>
> > [mailto:[email protected]
> <mailto:flexcoders%40yahoogroups.com> ] On Behalf Of mark goldin
> > Sent: Monday, December 31, 2007 11:45 AM
> > To: [email protected]
> <mailto:flexcoders%40yahoogroups.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 <tspratt@> wrote:
> >
> > Or the short answer, the same way you got the
> > data into the dataProvider for the DataGrid.
> >
> > Tracy
> >
> >
> >
> > ________________________________
> >
> >
> > From: [email protected]
> <mailto:flexcoders%40yahoogroups.com>
> > [mailto:[email protected]
> <mailto:flexcoders%40yahoogroups.com> ] On Behalf Of Douglas Knudsen
> > Sent: Monday, December 31, 2007 10:22 AM
> > To: [email protected]
> <mailto:flexcoders%40yahoogroups.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 <http://adobe.com/ <http://adobe.com/> > . For a
> ColdFusion based example,
> you can
> > check this out
> >
> >
> http://www.acfug.org/index.cfm?fa=meetings.meetingdetail&EventID=177
> <http://www.acfug.org/index.cfm?
fa=meetings.meetingdetail&EventID=177>
> > <http://www.acfug.org/index.cfm?
> <http://www.acfug.org/index.cfm?>
> fa=meetings.meetingdetail&EventID=177>
> >
> > DK
> >
> > On Dec 31, 2007 10:14 AM, mark goldin
> > <markgoldin_2000@ <mailto:markgoldin_2000@> > wrote:
> >
> > And how data from server gets into the Model?
> >
> >
> >
> > Douglas Knudsen <douglasknudsen@
> > <mailto:douglasknudsen@> > 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
> > <markgoldin_2000@ <mailto:markgoldin_2000@> > 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
> > <http://item.id/ <http://item.id/> > ,
> > name: item.name <http://item.name/ <http://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 <http://www.cubicleman.com/>
> > <http://www.cubicleman.com/ <http://www.cubicleman.com/> >
> > this is my signature, like it?
> >
> >
> >
> >
> > --
> > Douglas Knudsen
> > http://www.cubicleman.com <http://www.cubicleman.com/>
> > <http://www.cubicleman.com/ <http://www.cubicleman.com/> >
> > this is my signature, like it?
> >
>
