Property sheet interface and selection properties

[Bug Importer]

1. create ZClass derived from DTMLDocument and ObjectManager
2. add a property sheet instance to the class
3. add some simple string properties
4. add a python script to the methods of this ZClass which returns a simple string array
5. add a selection property based on the script in 4.
6. try to add a property sheet interface to this property sheet instance

This runs into following error:

> Traceback (innermost last):
> Module ZPublisher.Publish, line 101, in publish
> Module ZPublisher.mapply, line 88, in mapply
> Module ZPublisher.Publish, line 39, in call_object
> Module ZClasses.Property, line 84, in manage_createView
> Module ZClasses.Property, line 188, in manage_createEditor
> Module ZClasses.Method, line 103, in manage_addDTMLMethod
> Module OFS.DTMLMethod, line 403, in addDTMLMethod
> AttributeError: 'unicode' object has no attribute 'read'

7. when removing the selection property all works fine

[Andreas Jung (ajung)]

Try to replace in DTMLMethod.py, addDTMLMethod()

    if type(file) is not type(''): file=file.read()

with

    if not isinstance(file, (str, unicode)): file=file.read()

No idea where the unicode string in your case comes from. I think that 'file' should either be a file or a string but never a unicode string.

Please report back

[Hanno Schlichting (hannosch)]

This was an application bug and has a suggested fix. No bug in Zope itself in sight.