[baseten-users] How to use a single BXDatabaseContext object with multiple nib files

[Réjean Lamy]

Thanks for the answer

> We changed the fetching behaviour so that if the context is already  
> connected, the array controller can be set to fetch automatically  
> and not just on connect.


Changed since 1.6.2 ? so I must use the latest build or svn trunk ?

Rejean



Le 09-05-25 à 09:07, Tuukka Norri a écrit :

> Hi!
>
> Réjean Lamy kirjoitti 24.5.2009 kello 18.48:
>> My application main window had tables with the BX Array Controllers  
>> and buttons to load the other nibs, so yes, when a nib is loaded,  
>> the context is already connected.
>> I realize we can't pass an already connected context to a new nib  
>> and use it with the nib's BX Array Controllers, right ?
> This is possible by setting BXSynchronizedArrayController's Database  
> Context binding (not the outlet) or by calling its - 
> setDatabaseContext: method. We changed the fetching behaviour so  
> that if the context is already connected, the array controller can  
> be set to fetch automatically and not just on connect.
>
>> I experimented with making the connection to context only when the  
>> nib finish loading and it works. At this instant, all the BX Array  
>> Controllers both on the main window and the nib works correctly.  
>> But this is not the desired behavior. I need the main window  
>> working with its  BX Array Controllers connected to the context  
>> and, only on demand, loading a nib and passing the already  
>> connected context to this nib.
>>
>> How can I handle this situation ?
>
>
> Here's some sample code (may contain errors as I just wrote it). In  
> your auxiliary nib, set the file's owner's class to NibOwner and  
> bind the array controller's Database Context binding to it with  
> “databaseContext” as the key path.
>
> // Owner of Other.nib
> @interface NibOwner : NSWindowController
> {
> 	BXDatabaseContext* mContext;
> }
> @property (readwrite, retain) BXDatabaseContext* databaseContext;
> @end
>
>
> @implementation NibOwner
> @synthesize databaseContext = mContext;
> //-dealloc missing for the sake of clarity.
> @end
>
>
> // A controller class to be instantiated in your MainMenu.nib
> @interface Controller : NSObject
> {
> 	IBOutlet BXDatabaseContext* mContext;
> }
> - (void) instantiateNib;
> @end
>
>
> @implementation Controller
> - (void) instantiateNib
> {
> 	NibOwner* windowController = [[[NibOwner alloc]  
> initWithWindowNibName: @"Other"] autorelease];
> 	//Add windowController to a collection or whatever.
> 	
> 	[windowController setDatabaseContext: mContext];
> }
> @end
>
> -- 
> Best regards,
> Tuukka Norri
> MK&C
>
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