Hi folks,
Continuing my learning into Cocoa I'm developing a personal finance
application. An admirable project I believe since none available suit
my purposes and it always pays to have a project that one would use to
learn from.
I have a simple core data model consisting of
selection of your array controller.
Take a look at: http://homepage.mac.com/mmalc/CocoaExamples/controllers.html
for lots of great examples of how to use bindings.
Best regards,
Steven Huey
--
Steven Huey Software - http://www.stevenhuey.com
On May 12, 2008, at 8:03 AM, Steven Hamilton wrote
Hi folks,
If I'm using a predicate in the attributes pane of IB for an entity,
is it possible to reference the keypath in another object in that
predicate? Not by following a relationship.
e.g.
entity is transactions.
predicate;
fromAccount == MLTreeController.selection.name
kind of
://homepage.mac.com/mmalc/CocoaExamples/controllers.html
for lots of great examples of how to use bindings.
Best regards,
Steven Huey
--
Steven Huey Software - http://www.stevenhuey.com
On May 12, 2008, at 8:03 AM, Steven Hamilton wrote:
Hi folks,
Continuing my learning into Cocoa I'm developing
I have a core data master-detail interface that consists of a
sourcelist on the left and a tableview.
The source list displays object from a core data entity. THe table
view will be populated by a custom datasource as I have to do some
data munging on the way from core data to the
On 20/05/2008, at 5:18 AM, Jonathan Dann wrote:
On 19 May 2008, at 13:29, Steven Hamilton wrote:
I have a core data master-detail interface that consists of a
sourcelist on the left and a tableview.
The source list displays object from a core data entity. THe table
view
Fixed that error now. I had a rogue arraycontroller in the NIB file
from a previous predicate exercise. The nib is cleaned up and still no
selection. It appears that I'm unable to get anything other than NULL
from any objects instantiated in the NIB file. My appDelegate holds
the code for
with me, and apologies for being such a n00b.
(also, selectionIndexPaths binding is required in the NSOutlineView,
no idea why either)
On Wed, May 21, 2008 at 10:00 PM, Steven Hamilton [EMAIL PROTECTED]
wrote:
Fixed that error now. I had a rogue arraycontroller in the NIB file
from
Hi folks,
I have a custom datasource that does a fetch from Core Data. My entity
has a property in it called 'memo'.
When I enumerate the returned array to check the results I get the
following warning.
warning: 'NSEntityDescription' may not respond to '-memo'
The fetch appears to work
Thanks everyone. Good answers all round.
On 31/05/2008, at 4:51 AM, mmalc crawford wrote:
On May 30, 2008, at 3:09 AM, Peter Burtis wrote:
The compiler only knows about methods declared somewhere or the
headers, and Core Data accessor methods are handled at runtime and
not declared
] setValue:fetchedAccount forKey:
[tableColumn identifier]];
}
and set the transaction toAccount value to the actual fetched object
itself.
Can anyone confirm?
On 01/06/2008, at 6:28 PM, Steven Hamilton wrote:
Hi folks,
Back again with more Core Data puzzles.
I have entities like so
Hi folks,
Back again with more Core Data puzzles.
I have entities like so;
Account;
NSStringname
relationshipcredit
relationshipdebit
Transaction;
NSStringname
NSDate date
relationshiptoAccount (reverse of credit in Account entity)
relationship
, Steven Hamilton wrote:
What I can't do is set change the relationships. In my tableView
I'm displaying the Account name in the toAccount and fromAccount
columns. I want to be able to type a new Account.name in there and
have the Transaction object update the relationship to the new
Account
Hi folks, newbie here.
A quickie query on a warning.
Both returns in the following code give a 'warning: return makes
pointer from integer without cast'
- (id)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:
(id)item
{
if (!item) {
return
Hi folks,
I have an NSplitview similar to Mails. I'm trying to fix the split so
it doesn't move just like Mail but can't for the life of me figure out
how to do it. My left split has an Outlineview and the right split a
tableview. Resizing the window always moves the split upsetting the
G'day!,
I've been a busy bee learning Cocoa and core data (as my frequent
postings may reveal) and now I wish to add NSPersistentDocument
functionality. I started my project using the normal Core Data
template so how do I change my program to use the NSPersistentDocument
model instead of
On 16/06/2008, at 5:42 AM, Hamish Allan wrote:
On Sun, Jun 15, 2008 at 11:42 AM, Steven Hamilton [EMAIL PROTECTED]
wrote:
I've been a busy bee learning Cocoa and core data (as my frequent
postings
may reveal) and now I wish to add NSPersistentDocument
functionality. I
started my project
You do rock sir!
Thanks a lot.
On 19/06/2008, at 7:45 PM, mmalc Crawford wrote:
On Jun 19, 2008, at 2:38 AM, Steven Hamilton wrote:
What I don't understand is how to bind to the managedObjectContext.
As far as I can tell in each windows .nib file I set File's Owner
to be my subclassed
Easy one this I reckon (but not that easy or I wouldn't ask),
I've converted my core data app to NSPersistentDocument and using a
multi-nib model for my 3 windows. I have an account window using the
IB wizard Master-Detail interface with bindings to add and manage
Account entities. I also
On 28/06/2008, at 4:32 AM, Ben Trumbull wrote:
When I add a new account entity my outlineview doesn't know. Should I
be using a notification to find out when a new account entity is
added. If so, which one?
The easiest way to track insertions and deletions in the
NSManagedObjectContext is
On 28/06/2008, at 2:41 PM, Chris Hanson wrote:
On Jun 27, 2008, at 7:25 PM, Steven Hamilton wrote:
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(buildSourceList)
name:@NSManagedObjectContextObjectsDidChangeNotification object:
[self.document
Hi folks,
Can anyone tell me the most efficient way to unsign a floatvalue in an
NSNumber?
Like change a -1.47 to 1.47 ?
Thanks
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Hi folks,
Can anyone tell me the most efficient way to unsign a floatvalue in
an NSNumber?
Like change a -1.47 to 1.47 ?
Thanks
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Hi Folks,
I have a NSTableview with a datasource consisting of an NSArray of
dictionaries. One column in my table has an NSPopupbuttonCell. The
content and contentValues are bound to a Core Data Account object. I
use a name property as my contentValue.
I'm having trouble changing the
Thanks all, fabs() is just what I need.
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Hi folks,
I have a Core Data model which contains two entities. I have a
tableview with the standard bindings arrangement and Add/Remove
buttons handling one of the entities. What I need to achieve is that
when the Add button is pressed both entity types are created, not just
the one
Hi folks,
In my core data app I have an Account entity. I've subclassed this as
I want to add a method that calculates the Account's balance by doing
a fetch on Transaction entities and tallying up the amounts. I've
created a custom class in xcode and added the following code in
Account.m
Hi folks,
I think I need some help understanding floats.
I have a class that calculates a balance and places it in a table
column. At the end of this method I NSLog the output like so;
NSLog(@current balance is: %@,balance);
and get
current balance is: 18976.69
in the console. So far so
:
On 10.10.2008, at 13:04, Steven Hamilton wrote:
NSLog(@current balance is: %@,balance);
and get
current balance is: 18976.69
in the console. So far so good.
(...) The float calculation is exactly 2 decimal places, I know
that for a fact and NSLog proves it.
You may want to be aware that NSLog gives
On 11/10/2008, at 11:59 AM, Kyle Sluder wrote:
On Fri, Oct 10, 2008 at 9:58 PM, Kyle Sluder
[EMAIL PROTECTED] wrote:
This article
It would help if I provided the link.
http://www.setfiremedia.com/blog/7-top-tips-for-coding-with-currency
Thanks Kyle. I didn't realise floating point were so
:
On 10.10.2008, at 13:04, Steven Hamilton wrote:
NSLog(@current balance is: %@,balance);
and get
current balance is: 18976.69
in the console. So far so good.
(...) The float calculation is exactly 2 decimal places, I know
that for a fact and NSLog proves it.
You may want to be aware that NSLog gives
Hi Folks,
I have a core data bound tableColumn that displays a currency balance.
My NSManagedObject is a custom class that calculates the balance from
a @sum of related transactions and returns the balance. The binding
then displays this balance in the tableColumn. So far so good. This
On 16/10/2008, at 11:59 PM, Corbin Dunn wrote:
Hi Steven,
On Oct 16, 2008, at 2:03 AM, Steven Hamilton wrote:
Hi Folks,
I have a core data bound tableColumn that displays a currency
balance. My NSManagedObject is a custom class that calculates the
balance from a @sum of related
Hi Folks,
Following on from my previous query regarding decimals and floats,
I've decided to refactor my code to maintain a base component of any
currency in use gnucash stylee. This means all values are kept as INT
for accuracy. However, I wish to display the cent amounts as dollars
Hi folks,
I hope I can explain this clearly enough. Here goes... ;)
I have an NSTableview in my Core Data app. I have a custom controller
providing the tableViews datasource and delegate methods as I need to
mung the data a bit between the MOC and the View. This all works fine.
In one
On 15/05/2009, at 8:12 PM, Kyle Sluder wrote:
On Fri, May 15, 2009 at 5:56 AM, Steven Hamilton o...@scorch.net
wrote:
- (id)tableView:(NSTableView *)tableView
objectValueForTableColumn:(NSTableColumn *)tableColumn row:(int)row
{
if ([[tableColumn identifier] isEqualToString:@transfer
On 15/05/2009, at 8:53 PM, Kyle Sluder wrote:
On Fri, May 15, 2009 at 6:41 AM, Steven Hamilton o...@scorch.net
wrote:
Hmm, clearly I'm doing it all wrong. I assumed (from past problems)
that the
delegate method can't return a value to an popup in a tableView and
that you
use
On 15/05/2009, at 9:24 PM, Kyle Sluder wrote:
On Fri, May 15, 2009 at 7:10 AM, Steven Hamilton o...@scorch.net
wrote:
Hmm, so we're saying that -
tableView:willDisplayCell:forTableColumn:row:
cannot be used to set the value I want displayed in an NSPopupCell
in a
column? I must use
Ok. I'm still struggling with this.
My NSTableColumn is bound to an NSArrayController for content and
content values. This works great. My custom controller has the
following code in it to set the popup selection to display for each row.
- (void)tableView:(NSTableView *)aTableView
Hi folks,
I need some advice on how best to handle an itchy problem. In order to
tighten up my coding I'm compiling with warnings as errors which has
showed up a big problem with my code.
I have a tableView using a datasource array of dictionaries. Fairly
standard stuff. 2 of the keys in
On 04/06/2009, at 10:36 PM, Graham Cox wrote:
On 04/06/2009, at 10:31 PM, Steven Hamilton wrote:
I'm getting the error because I initially declared my credit and
debit objects as NSNumbers. Can I recast them without them losing
scope?
Yes, just do this: credit = (id)[NSNull null
Hi,
I have an NSTableview populated by bindings to Core Data. In one
column I have a popupbutton (bad idea as its slow, I know) and in
another I have a checkbox. I only want the checkbox to be available
when certain items from the popupbutton are selected. To try and do
this I've
Begin forwarded message:
From: Steven Hamilton o...@scorch.net
Date: 6 June 2009 11:59:18 AM
To: Corbin Dunn corb...@apple.com
Subject: Re: Replacing a tableView Cell with null
On 06/06/2009, at 9:33 AM, Corbin Dunn wrote:
On Jun 5, 2009, at 4:01 PM, Steven Hamilton wrote:
Hi,
I have
___
return [tableColumn dataCell];
also note you have a memory leak, you want return [cell
autorelease], and probably don't want to alloc the cell until you
need it.
Gotcha. Thanks a lot.
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Hi folks,
I have a Core data application. I've versioned my model, created a new
version and added one new entity. When I create a mapping model file
and choose my two models. It creates a default mapping but if some of
the entities are selected in teh mapping view, XCode hard crashes with
Hi folks,
I'm looking for advice on usage of arrays in tableviews.
I have a subclassed NSWindowController. In this class I have a method
that extracts data from my core data model and formulates an array of
dictionaries. Also in this class I have the tableview datasource
methods. The
On 05/12/2008, at 9:25 AM, Ashley Clark wrote:
(Leopard 10.5.5 with GC on)
If you're running this program under GC then none of what you said
makes sense anyway since retain/release/autorelease are all no-ops
under GC and -dealloc is never called there.
Ah the benefit of a simple
Hi folks,
I've got a single NSPopupButton. The content is bound to an
NSArrayController arrangedObjects and value bound an attribute. All
good. THe ArrayController is sourcing a Core Data store for its array
and this is all good too. The problem is when the window is loaded the
Hi folks,
I've got a single NSPopupButton. The content is bound to an
NSArrayController arrangedObjects and value bound an attribute. All
good. THe ArrayController is sourcing a Core Data store for its array
and this is all good too. The problem is when the window is loaded the
NSPopupButton is
snip
However, the arrangedObjects array, while existing, contains zero
objects. I've checked the Outlet is connected ok. A timing issue of
some sort?
No. Based on the above, your code isn't KVO compliant.
First of all, it's important to realize that nothing is ever bound to
an instance
Great stuff. Thanks Guys. What I've done is register as an observer of
the arrangedObjects keypath in my windowDidLoad method. Then when it
changes I set the correct selectedIncomeEnvelope and remove the
observer. Job done.
On 09/12/2008, at 9:51 PM, Volker in Lists wrote:
Hi Steven,
as
Hi folks,
I have a customer WindowController class and within it I have a method
that returns a NSSortDescriptor. Like this;
-(NSArray *)nameSortDescriptors
{
NSSortDescriptor *sorter;
sorter = [[[NSSortDescriptor alloc]
initWithKey: @name
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