Core Data: Build a popup with different options on each line
Core Data: Build a popup with different options on each line
- Subject: Core Data: Build a popup with different options on each line
- From: Yvan BARTHÉLEMY <email@hidden>
- Date: Fri, 14 Sep 2007 16:04:48 +0200
===== Context =====
I have the following data scheme in my application :
Character (has many) Usage examples (has many) Translations
I have a NSTableView representing my character list (with 2 columns:
glyph, number of lines) and an other for the examples (with 3
columns: value, transliteration, and translations).
In my Example table, I have a translation column. I want it to
display one of all translations available (of the language set in
Preferences).
===== What is working =====
For this goal, I've done this in Interface Builder :
- I have created instances of NSArrayController for Character,
Example and Translation entities and bound to my AppDelegate
NSManagedObjectContext object.
- I've bound my character columns values to the corresponding
properties in Character NSArrayController
- I've bound my example string columns values to the corresponding
properties in Example NSArrayController
All of this works well.
===== What is not working =====
Then, I've tried to bound my translation column content to
ExampleArrayController : arrangedObjects.translations.
And set the contentValues to ExampleArrayController :
arrangedObjects.translations.@distinctUnionOf[Objects/Arrays/Sets].value
But it failed, and I've got the following error :
2007-09-14 15:54:30.000 iKanji[1732] *** -[_NSFaultingMutableSet
objectAtIndex:]: selector not recognized [self = 0x345290]
I don't know how to set my bindings in order to achieve the result I
want. I was able to have something approching the desired result :
- A translation array controller with its contentSet bound
selection.translations of Example array controller
- Bound the Column content and contentValues, to the array controller
Thanks for your help.
Yvan
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