[Zope] non-zope objects in zope

[Bernd Dorn]

Sam Gendler wrote:
> I used to be a fairly knowledgable zope user many years ago, but things 
> have moved on and I've forgotten most of what I know.  I have a largish 
> library of python modules which define a number of classes which have 
> methods that perform work in a product.  Currently, much of the system 
> is managed vai commandline tools which utilize the library.  We want to 
> ad a web interface, and I figured zope would be a natural, since 
> everything is already in python.
> 
> I created external methods which return instances of classes, but if I 
> try to use those instances from within dtml (iterating over a list of 
> them, for instance), I just get prompted for authentication 
> credentials.  I seem to recall that there was some way of applying 
> zopishness to external object instances at runtime, but I can't remember 
> what that mechanism is, and I couldn't find it in either the zope book 
> or the zope bible I went out an bought.
> 
> For example, if I have a customer class which has name, id, and revenue 
> members, and I create an external method to return a list of customer 
> instances, I cannot do the following
> 
> <dtml-in extListCustomers prefix="cust">
> <dtml-var expr="cust_item.id"> <dtml-var expr="cust_item.name"> <dtml 
> var expr="cust_item.revenue">
> </dtml-in>
> 
> Thanks
> 
> --sam
> 
> 
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had the same problem

you need a security context for your classes

the objects should be derived from Acquisition , either implicit or explicit

and use the securityDeclareXXX Methods of ClassSecurityInfo::

from AccessControl import ClassSecurityInfo
from Acquisition import Explicit

class Klass(Explicit):


     security = ClassSecurityInfo()

     security.declarePublic('aMethod')
     def aMethod(self):
         ....