nsobjectcontroller | 易学教程

Binding selection across multiple view controllers in a single window interface

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问题 I am having an issue wrapping my head around how to hook up a few NSArrayControllers across two view controllers. I want to sync the selection in the source list table view to update the values in the second detail view controller. I'm using the Cocoa Dev Central Build A Core Data Tutorial as the starting point, but have broke down the architecture so that there is an NSWindowController that contains two NSViewControllers: one for the posts table on the left and one for the post details on

KVO: +keyPathsForValuesAffecting<Key> doesn't work with (subclass of) NSObjectController

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问题 I have a KVO-able class (call it Observee ), which affectedValue dynamic property is affected by affectingValue property. The dependency between the properties is defined by implementing +keyPathsForValuesAffectingAffectedValue method. Setting a value to affectingValue notifies that affectedValue has changed as I expected, unless Ovservee is a subclass of NSObjectController . Full example follows: @interface Observee : NSObject // or NSObjectController @property (readonly, strong, nonatomic)

How to use NSObjectController with Core Data?

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问题 I have spent more than a day on trying to find a simple example of how to use an NSObjectController for binding along with core data. All examples are of NSArrayControllers with NSTableView bindings. How would you setup a simple NSObjectController with core data to automatically save and fetch data? Lets say you want to bind an entity with a string attribute to a text field, how would you do this? 回答1: Here are the basics in Interface builder. Drag over an nstextfield into a view (from the

How do I bind an NSTextField's value to an NSObjectController's content without errors?

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问题 I have a pretty simple set up here, and Xcode is giving me a comment-less red "!" mark in the interface builder. Started from a Core Data-based document template. The document xib has an NSObjectController instance, whose Managed Object Context is bound to the File's Owner (my NSPersistentDocument subclass). An NSTextField is present, whose Value I want to bind to the NSObjectController...and this is where the problem comes in. I type "title" for the "Model Key Path," because that's the

KVO: +keyPathsForValuesAffecting<Key> doesn't work with (subclass of) NSObjectController

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I have a KVO-able class (call it Observee ), which affectedValue dynamic property is affected by affectingValue property. The dependency between the properties is defined by implementing +keyPathsForValuesAffectingAffectedValue method. Setting a value to affectingValue notifies that affectedValue has changed as I expected, unless Ovservee is a subclass of NSObjectController . Full example follows: @interface Observee : NSObject // or NSObjectController @property (readonly, strong, nonatomic) id affectedValue; @property (strong, nonatomic) id affectingValue; @property (strong, nonatomic)

How to use NSObjectController with Core Data?

阅读更多关于 How to use NSObjectController with Core Data?

I have spent more than a day on trying to find a simple example of how to use an NSObjectController for binding along with core data. All examples are of NSArrayControllers with NSTableView bindings. How would you setup a simple NSObjectController with core data to automatically save and fetch data? Lets say you want to bind an entity with a string attribute to a text field, how would you do this? Here are the basics in Interface builder. Drag over an nstextfield into a view (from the object library) Drag over a nsobjectcontroller (likewise) Open the bindings inspector. Option-Cmd-7 or View