Re: [Pyobjc-dev] Exception when trying to use datetime object in NSArrayController

[Ronald O. <ron...@ma...>]

On 29 Sep, 2009, at 3:14, Erik Wickstrom wrote:

> I'm having some trouble passing a Python datetime.datetime.now()
> object to an NSArrayController.  I keep getting this error:
>
> (ValueError: NSInvalidArgumentException - *** -[NSDate
> initWithTimeIntervalSinceReferenceDate:]: method only defined for
> abstract class.  Define -[OC_PythonDate
> initWithTimeIntervalSinceReferenceDate:]!)  -- I though pyobjc could
> convert this type.  Any ideas?
>
> class DTController(NSObject):
>    arrayController = objc.IBOutlet()
>    data = []
>
>    def awakeFromNib(self):
>        print "testing 123"
>        self.data.append({'date': datetime.datetime.now(),
>                     'comments': 'testing 123',})
>        self.arrayController.rearrangeObjects()
>
> Any idea what I'm doing wrong?

It seems to work for me, could you please tell more about your  
environment:

* Which version of OSX?
* Are you using /usr/bin/python or a custom install?
* Which version of PyObjC are you using (python -c 'import objc; print  
objc.__version__')

BTW. The script I tested with is:

# begin of file
from Cocoa import *
import datetime

a = NSMutableArray.array()
c = NSArrayController.alloc().initWithContent_(a)

a.addObject_(datetime.datetime.now())
print a

c.rearrangeObjects()

# end of file

Could you create a small standalone program what demonstrates the  
problem? A GUI tool would be fine.

Ronald
>
> Thanks!
> Erik
>
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