[flexcoders] Re: Flex beta 3/CF and Datagrid not being populated

Mon, 19 Jun 2006 05:08:38 -0700

Hi,

Sweet it is working now.  The "lastResult" worked.  So that is  basically a reference to my query object?

Once I did that, just for tests I removed the :

public function initApp():void {
  // Force artists class to load
  artSvc.getArtists.send();
  }

I removed the "send()" and it still worked so I am not sure of the reason for it?  Is is a coding practice to use that, either way it worked with and without the send() method call.

How would you reference an array?  Lets say I had a CFC that returned like a 2D array? 

I guess I really looking for more information on how a datagrid or tree control or whatever it may be  would handle things of different data types like an array or a query object or whatever.

Thanks for the help!  Highly appreciated!

-Malik

 


--- In flexcoders@yahoogroups.com, "Tim Hoff" <[EMAIL PROTECTED]> wrote:
>
> Yeah,
>
> Sorry, use:
>
> artSvc.getArtists.lastResult
>
> for the dataProvider, without artists at the end.
>
> -TH
>
> --- In flexcoders@yahoogroups.com, "malik_robinson"
> Malik_Robinson@ wrote:
> >
> >
> > Hi,
> >
> > I ended up getting an error, I think it was due to the text
> > "lastResult". Below is the error:
> >
> > I am very curious to know if someone can try this simple example
> and get
> > a datagrid to populate via a query object from CF.
> >
> > Error: Unknown Property 'artists'.
> > at
> >
> mx.collections::ListCollectionView/http://www.adobe.com/2006/actionsc
> rip\
> > t/flash/proxy::getProperty()
> > at mx.binding::PropertyWatcher/::updateProperty()
> > at mx.binding::Watcher/mx.binding:Watcher::wrapUpdate()
> > at mx.binding::PropertyWatcher/updateParent()
> > at mx.binding::Watcher/updateChildren()
> > at mx.binding::PropertyWatcher/::updateProperty()
> > at mx.binding::Watcher/mx.binding:Watcher::wrapUpdate()
> > at mx.binding::PropertyWatcher/eventHandler()
> > at flash.events::EventDispatcher/dispatchEvent()
> > at
> >
> mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::r
> esu\
> > ltHandler()
> > at mx.rpc::Responder/result()
> > at mx.rpc::AsyncRequest/acknowledge()
> > at
> > ::NetConnectionMessageResponder/NetConnectionChannel.as$42:NetConne
> ction\
> > MessageResponder::resultHandler()
> > at mx.messaging::MessageResponder/result()
> >
> >
> > Here is the CFC:
> >
> > <cfcomponent>
> >
> >
> >
> > <cffunction name="getArtists" access="remote" returntype="query">
> >
> > <cfset var artists = '' />
> >
> > <cfquery name="Artists" datasource="cfcodeexplorer">
> >
> > SELECT firstname, lastname
> >
> > FROM ARTISTS
> >
> > </cfquery>
> >
> > <cfreturn Artists />
> >
> > </cffunction>
> >
> > </cfcomponent>
> >
> > Here is the current MXML:
> >
> > <?xml version="1.0" encoding="utf-8"?>
> > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml
> > <http://www.adobe.com/2006/mxml> " layout="absolute"
> > creationComplete="initApp()">
> >
> > <mx:Script>
> > <![CDATA[
> > import mx.rpc.events.*;
> > import mx.collections.ArrayCollection;
> >
> >
> > public function initApp():void {
> > // Force artists class to load
> > artSvc.getArtists.send();
> > }
> >
> > ]]>
> > </mx:Script>
> >
> > <mx:RemoteObject
> > id="artSvc"
> > destination="ColdFusion"
> > source="myApp.cf.com.artists"
> > showBusyCursor="true" />
> >
> >
> > <mx:DataGrid id="dg" dataProvider="{artSvc.getArtists.artists}"
> x="177"
> > y="65">
> > <mx:columns>
> > <mx:DataGridColumn headerText="First Name"
> dataField="firstName"/>
> > <mx:DataGridColumn headerText="Last Name"
> dataField="lastName"/>
> > </mx:columns>
> > </mx:DataGrid>
> >
> > </mx:Application>
> >
> >
> >
> > --- In flexcoders@yahoogroups.com, "Tim Hoff" <TimHoff@> wrote:
> > >
> > >
> > > Hi Malik,
> > >
> > > I can't test this, but this is how the examples that I've seen
> work.
> > >
> > > -TH
> > >
> > > <?xml version="1.0" encoding="utf-8"?>
> > > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml
> > > <http://www.adobe.com/2006/mxml> "
> > > layout="absolute" creationComplete="initApp()">
> > >
> > > <mx:Script>
> > > <![CDATA[
> > > import mx.collections.ArrayCollection;
> > > import mx.rpc.events.*;
> > >
> > > public function initApp():void {
> > > // Force artists class to load
> > > artSvc.getArtists.send();
> > > }
> > > ]]>
> > > </mx:Script>
> > >
> > > <mx:RemoteObject id="artSvc" destination="ColdFusion"
> > > source="myapp.cf.com.artists" showBusyCursor="true" />
> > >
> > > <mx:DataGrid id="dgArtists"
> > > dataProvider="{artSvc.getArtists.lastResult.artists}" x="177"
> y="65">
> > > <mx:columns>
> > > <mx:DataGridColumn headerText="First Name"
> dataField="firstname"/>
> > > <mx:DataGridColumn headerText="Last Name" dataField="lastname"/>
> > > </mx:columns>
> > > </mx:DataGrid>
> > >
> > > </mx:Application>
> > >
> > > --- In flexcoders@yahoogroups.com, "malik_robinson"
> Malik_Robinson@
> > > wrote:
> > > >
> > > > Hi,
> > > >
> > > > I have the following code that I *thought* would work, but it
> does
> > > > not. Can anyone see why this might not work? Basically the
> datagrid
> > > > does not get loaded, the browser says "transferring data from
> > > > localhost", but it never populates the grid, no error, I see
> the
> > show
> > > > busy cursor and my empty datagrid. I am using CF 7 and there
> is a
> > > > datasource that is defined when you install the tutorials. It
> is
> > > > basically a database of artists or something. I wrote a test
> page to
> > > > ensure my CFC works and it does return a query object, so I
> know the
> > > > CFC is fine.
> > > >
> > > > I am just trying to have it load the datagrid upon
> creationComplete
> > > >
> > > > Here is the main.mxml:
> > > >
> > > > <?xml version="1.0" encoding="utf-8"?>
> > > > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
> > > > layout="absolute" creationComplete="initApp()">
> > > >
> > > > <mx:Script>
> > > > <![CDATA[
> > > > import mx.collections.ArrayCollection;
> > > > import mx.rpc.events.*;
> > > >
> > > >
> > > > public function initApp():void {
> > > > // Force artists class to load
> > > > artSvc.getArtists();
> > > > }
> > > > ]]>
> > > > </mx:Script>
> > > >
> > > > <mx:RemoteObject id="artSvc" destination="ColdFusion"
> > > > source="myapp.cf.com.artists" showBusyCursor="true" />
> > > >
> > > > <mx:DataGrid id="dgArtists"
> > > > dataProvider="{artSvc.getArtists.artists}" x="177" y="65">
> > > > <mx:columns>
> > > > <mx:DataGridColumn headerText="First Name"
> > > > dataField="firstname"/>
> > > > <mx:DataGridColumn headerText="Last Name"
> > > > dataField="lastname"/>
> > > > </mx:columns>
> > > > </mx:DataGrid>
> > > >
> > > >
> > > > </mx:Application>
> > > >
> > > >
> > > > Any ideas?
> > > >
> > > > -Malik
> > > >
> > >
> >
>

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