cocoa design for a database application
cocoa design for a database application
- Subject: cocoa design for a database application
- From: email@hidden
- Date: Sun, 11 Jan 2009 12:52:42 -0500
I've developed some small Cocoa programs and now I'm looking to learn
some of the more advanced topics (bindings, controllers, etc.). I'd
like to create a Cocoa program that has multiple "document types"
corresponding to tables in a database (i.e., I'll be able to open
separate windows for various rows in various tables). I've worked
through the NSArrayController example in chapter 8 of the Hillegas book.
So I'm starting out with a simple prototype to try to learn. I didn't
use an NSDocument application because my application will eventually
have multiple document types for the separate tables in the database.
What I want to do is have a window that I can click on a button that
says "new person" and I want it to open a window (from a separate nib
file) with text fields for entering a first and last name. I created a
separate Window nib file (PersonWindow.xib) for this new window. I put
a NSObjectController (PersonController) in that nib file that I will
use for the bindings. What do I need to do in the new person button
action to tell it to create and open the window for this nib file?
Looking through the documentation made me think I needed a
NSWindowController so I tried this, but I'm fairly certain it's not
correct.
-(IBAction)newPressed:(id) sender {
NSLog(@"newPressed");
Person *person = [[Person alloc] init];
person.firstName = @"blank";
PersonController *pc = [[PersonController alloc]
initWithContent:person];
NSWindowController *wc = [[NSWindowController alloc]
initWithWindowNibName:@"PersonWindow" owner:pc];
NSWindow *window = [wc window];
[window display];
}
The window never opens and I see the message:
Cannot create BOOL from object <NSTextField: 0x16bba0> of class
NSTextField
I don't know if this is because I didn't set up the bindings correctly
or if something else is wrong (I suspect both).
Also, should my Person class just have a NSMutableDictionary (for
storing the first and last names) or should I declare NSString ivars
for the first and last names in the person class (as properties so
they have the settters/getters necessary to work with bindings).
Pointers to relevant documentation are also welcome.
Thanks in advance,
Dave
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden