[Zope3-Users] Disappearing dictionary. Upon restart, dictionary resets.

[Tom Dossis]

>>>I have a content component that has a property that is a dictionary,
>>>the keys of which are objects (content components themselves). The
>>>values are lists of strings. I've tried implementing this a couple
>>>different ways, but each time I restart, the dictionary comes up
>>>empty.

Hi Alan,

Worked for me in a quick interactive test..


demo.py
=======
from persistent import Persistent

class Demo(Persistent):
     def __init__(self):
         self.d = {}


 >>> import transaction
 >>> from demo import Demo
 >>> from zope.app.folder import Folder
 >>>
 >>> # get the root object using debugger
 >>>
 >>> root[u'test_folder'] = f = Folder()
 >>> f[u'test_object'] = ob = Demo()
 >>> ob.d
{}
 >>> ob.d[Demo()] = ['1','2']
 >>> ob.d[Demo()] = ['a','b']
 >>> from pprint import pprint
 >>> pprint(ob.d
{demo.Demo object at 0x415796ec>: ['a', 'b'],
  demo.Demo object at 0x41579f2c>: ['1', '2']}
 >>> ob._p_changed = True
 >>> transaction.commit()
 >>> Ctrl-D

Connect to zope again...

 >>>
 >>> # get the root object using debugger
 >>> ob = root[u'test_folder'][u'test_object']
 >>> from pprint import pprint
 >>> pprint(ob.d)
{<well3.demo.Demo object at 0x4155466c>: ['a', 'b'],
  <well3.demo.Demo object at 0x415796ec>: ['1', '2']}
 >>>