My binding warnings are on in the Flex config, and I've seen the "changes to property" warnings in other situations, but not this one. The odd thing is that the changes to the properties are recognized, but not until the window is closed and re-opened. All I can gather from this is that there's some sort of binding update that gets fired when opening a pop-up, but that seems like it would defeat the purpose of binding.
Also, ModelLocator is imported as follows in the mxml file that contains the component that contains the DataGrid: <mx:Script> <![CDATA[import com.desktop.model.ModelLocator;]]> </mx:Script> --- In [email protected], "Tracy Spratt" <[EMAIL PROTECTED]> wrote: > > I was going to ask another question, but I think that there is an > easier way to determine if the reference style is a problem. > > Have you turned binding warnings off in Flex config? If so, turn them > back on. You should get a "changes to property ..." warning. > > But the question anyway: How does "ModelLocator" get instantiated or > referenced in the component that contains the datagrid? > > The danger is in the form of reference like this: > {mx.core.Application.application.myMember{. > > Tracy > > -----Original Message----- > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of fowleryj > Sent: Monday, October 17, 2005 12:03 PM > To: [email protected] > Subject: [flexcoders] Re: Problem with repeater and datagrid -- Please > help! > > Tracy, > > In the mxml file, the bindings look like this: > > <mx:DataGrid id="searchResultsDataGrid" > dataProvider="{ModelLocator.searchResults}"> > > And ModelLocator.searchResults contains the results of a database > query (i.e. ModelLocator.searchResults = event.result in the onResult > of SearchCommand.as). > > The relevant parts of ModelLocator.as look like this: > class com.desktop.model.ModelLocator implements > org.nevis.cairngorm.model.ModelLocator > { > public static function initialize() : Void > { > ModelLocator.searchResults = new Object(); > } > > //---------------------------------------------------------------------- > ------ > > public static var searchResults:Object; > } > > Thanks, and let me know if there's more detail I can give you. > > --- In [email protected], "Tracy Spratt" <[EMAIL PROTECTED]> wrote: > > > > How are you binding to the variables? I am not using Cairngorm, so I > > apologize if that should be obvious > > Tracy > > > > -----Original Message----- > > From: [email protected] [mailto:[EMAIL PROTECTED] > On > > Behalf Of fowleryj > > Sent: Monday, October 17, 2005 10:58 AM > > To: [email protected] > > Subject: [flexcoders] Re: Problem with repeater and datagrid -- Please > > help! > > > > Tracy's comment about binding caught my eye because I've been > > experiencing what seems to be unreliable binding in my application. > > I'm curious as to whether the reason is the issue Tracy mentioned. As > > an example: > > > > From my main page, I'll open a popup window whose ComboBoxes should be > > pre-populated with the results from a database call via a > > RemoteObject. These ComboBoxes are empty, and only populate if I close > > the window and re-open it. The same goes for the DataGrid and Labels > > that will be populated with search results-- they are initially empty, > > but populate once the window is closed and re-opened. I should mention > > that I am using Cairngorm, and the dataProviders for all of these > > components are ModelLocator variables, and thus static. > > > > The way that I have worked around this is to stop using ModelLocator > > variables as dataProviders, which I don't like doing, because I feel > > like I'm deviating from the Cairngorm architecture. Here is what I am > > doing instead: > > > > Whenever an event completes (a "SetSearchResultSelection," for > > example, which will store the object that the user selects of all the > > search results stored in the DataGrid), I fire a "FinishedEvent" from > > within that Command class's execute() method that announces that the > > event has completed. This allows me access to the Command class's > > variables (eventObject.<var_name>, for example) in my ViewHelper's > > handleEvent() method via event.data.<var_name>. > > > > Anytime I use this work-around instead of binding to ModelLocator > > variables, the components populate the first time the window is > > opened. Can anyone offer any insight as to why this is the case? > > > > Thank you. > > > > --- In [email protected], "Tracy Spratt" <[EMAIL PROTECTED]> > wrote: > > > > > > In your code, you do not have "two mxml files". It does not matter > > > where the code for a component comes from. When the component gets > > > instantiated, it is "in" the application, and you can reference the > > > parent application as Manish suggests. > > > > > > > > > > > > Be careful with binding. While I am not sure about > parentApplication > > or > > > parentDocument references, I AM sure about the > > > mx.core.Application.application style reference from within a > > component: > > > It will NOT reliably support binding, because of data typing issues. > > If > > > you need to bind to something in the application scope, post, and > I'll > > > suggest some solutions. > > > > > > > > > > > > Tracy > > > > > > > > > > > > ________________________________ > > > > > > From: [email protected] [mailto:[EMAIL PROTECTED] > > On > > > Behalf Of Parekh, Shweta - BLS CTR > > > Sent: Friday, October 14, 2005 1:49 PM > > > To: [email protected] > > > Subject: RE: [flexcoders] Problem with repeater and datagrid -- > Please > > > help! > > > > > > > > > > > > So then two mxml files will be accessing the same actionscript. In > one > > > mxml, the member is set and the other mxml accesses the member. That > > > might work for me. But can two mxml files access the same > > actionscript? > > > > > > > > > > > > -Shweta > > > > > > -----Original Message----- > > > From: [email protected] > > > [mailto:[EMAIL PROTECTED] On Behalf Of Mink, Joseph > > > Sent: Friday, October 14, 2005 1:18 PM > > > To: [email protected] > > > Subject: RE: [flexcoders] Problem with repeater and datagrid -- > > > Please help! > > > > > > Or you can create a static actionscript class with a private > > > member. Set that member, and then everyone who accesses the static > > > class will get the same value for that static member: > > > > > > > > > > > > class StaticClass > > > > > > { > > > > > > public static var theValue; > > > > > > } > > > > > > > > > > > > ... > > > > > > > > > > > > StaticClass.theValue = something; > > > > > > > > > > > > ... > > > > > > > > > > > > if (StaticClass.theValue == something) > > > > > > ... > > > > > > > > > > > > Does that help? > > > > > > > > > > > > > > > ________________________________ > > > > > > > > > From: [email protected] > > > [mailto:[EMAIL PROTECTED] On Behalf Of Manish Jethani > > > Sent: Friday, October 14, 2005 12:27 PM > > > To: [email protected] > > > Subject: Re: [flexcoders] Problem with repeater and datagrid -- > > > Please help! > > > > > > On 10/14/05, Parekh, Shweta - BLS CTR <[EMAIL PROTECTED]> > > > wrote: > > > > > > > 1. Are there global variables in Flex so that I can take the > > > result from > > > > remote call in a global variable and then use it anywhere -- > > > in my case in > > > > the child component? > > > > > > You can save the result in the application and then refer to it > > > from > > > child components using the expression > > > "parentApplication.myResult" > > > (can even bind to it I guess). ------------------------ Yahoo! Groups Sponsor --------------------~--> Fair play? Video games influencing politics. Click and talk back! http://us.click.yahoo.com/T8sf5C/tzNLAA/TtwFAA/nhFolB/TM --------------------------------------------------------------------~-> -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! 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