[Zope] accessing object from a list constructed in __init__.py

[kevin7kal]

The traceback and 'offending' code.
Traceback (innermost last):
  Module ZPublisher.Publish, line 115, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 41, in call_object
  Module Shared.DC.Scripts.Bindings, line 311, in __call__
  Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec
  Module Products.PythonScripts.PythonScript, line 323, in _exec
  Module None, line 7, in AMyZClass2
   - <PythonScript at /AMyZClass2>
   - Line 7
Unauthorized: You are not allowed to access 'number' in this context

--Script(Python)--
MZ = context.Zclass2.myZclass()
M2 = MZ.attribute1a
print MZ
print M2[0].number
return printed

kevin7kal wrote:
> I've changed my code a bit, adding the docstring, Persistent to all 
> classes and
> __allow_access_to_unprotected_attributes__ = 1 to all classes.  Still, 
> I recieve the same error.
>
> I have changed the code so _attribute1a is a single instance of class1 
> instead of a list of  containing multiple instances of class1 and I 
> can access the attributes of the object without issue.
> Are the objects automatically unwrapped when added to a list?  is 
> there a way around this?
> I can send the code again if need be.
>
> so here is the code again, this time with only the single object in 
> attribute1a.
> --myClass.py--
> import Acquisition
> from persistent import Persistent
>
> class class1(Acquisition.Explicit,Persistent):
>    ''' a simple class with some attributes and methods'''
>    __allow_access_to_unprotected_attributes__ = 1
>    attribute1 = 'attribute 1'
>    attribute2 = 'attribute 2'
>    _number = ''
>    def __init__(self,number2):
>        '''simple init for the class'''
>        self._number=number2*3
>          def method1(self):
>        '''return a string methd1'''
>        mthd1 =  'methd1'
>        return mthd1
>    def method2(self):
>        ''' return a string methd2'''
>        mthd2 = 'method2'
>        return mthd2
>    def _get_number(self):
>        return self._number
>    number = property(fget=_get_number)
>                     class class2(Acquisition.Explicit,Persistent):
>    ''' a second simple class with some attributes and methods'''
>    __allow_access_to_unprotected_attributes__ = 1
>    _attribute1a = []
>    attribute2a = []
>    def __init__(self):
>        '''create a list of class1 objects in attribute1a'''
>        #i=1
>        #while i < 5:
>        #    obj = class1(i)
>        #    self._attribute1a.append(obj)
>        #    i=i+1
>        self._attribute1a = class1(5)
>    def method1a(self):
>        '''instantiate class1 as object and return object usable by 
> zope'''
>        obj = class1(5)
>        return obj.__of__(self)
>    def method2a(self):
>        '''returns class1.method1()'''
>        c1m1 = class1.method1()
>        return c1m1
>    def get_attribute1a(self):
>        #if self._attribute1a != []:
>            #i = len(self._attribute1a)
>            #j = 0
>            #while j != i-1:
>            #    self._attribute1a[j] = self._attribute1a[j].__of__(self)
>            #    j = j+1
>        #else:
>        obj = self._attribute1a
>        return obj.__of__(self)
>    attribute1a = property(fget=get_attribute1a)
>    attribute1b = property(fget=method1a)
>    attribute2b = property(fget=method2a)
>
>
>
> Alexis Roda wrote:
>> En/na kevin7kal ha escrit:
>>> Ok, thank you for that.
>>> I can create the list of objects from the __of__(self) attribute 
>>> without the wrapper error now,
>>> but I still cannot access that attribute through zope.
>>> Here is my code again, along with my zope content.
>>
>> Another thing I've missed, class1 isn't persistent, but you store 
>> instances in Zclass2.attribute1a. This can explain the "can't pickle" 
>> error.
>>
>>
>>
>> HTH
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