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" <[EMAIL PROTECTED]> 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>[EMAIL PROTECTED]</email> > <active>true</active> > </employee> > <employee> > <name>Jane Doe</name> > <phone>555-777-66555</phone> > <email>[EMAIL PROTECTED]</email> > <active>true</active> > </employee> > </employees> > > > > Tracy Spratt <[EMAIL PROTECTED]> 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 <[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] > <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 <[EMAIL PROTECTED]> 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 > <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > wrote: > > And how data from server gets into the Model? > > > > Douglas Knudsen <[EMAIL PROTECTED] > <mailto:[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] <mailto:[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 > <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? >
