Unicode.customize(min_len=6) throws exception

[FelixSchwarz]

I'm using the current git master and I noticed that sometimes Unicode.customize throws an exception. For example:

  Unicode.customize(min_len=6)

leads to:

  File "…/spyne/interface/xml_schema/model.py", line 152, in complex_add
    document.add(v, tags)
  File "…/spyne/interface/xml_schema/_base.py", line 127, in add
    handler(self, cls, tags)
  File "…/spyne/interface/xml_schema/model.py", line 78, in simple_add
    interface.get_restriction_tag(cls)
  File "…/spyne/interface/xml_schema/_base.py", line 131, in get_restriction_tag
    return handler(self, cls)
  File "…/spyne/interface/xml_schema/model.py", line 272, in unicode_get_restriction_tag
    restriction = simple_get_restriction_tag(interface, cls)
  File "…/spyne/interface/xml_schema/model.py", line 66, in simple_get_restriction_tag
    restriction.set('base', cls.__extends__.get_type_name_ns(
AttributeError: 'NoneType' object has no attribute 'get_type_name_ns'

However the "shortcut" approach works:

Unicode(min_len=6)

[FelixSchwarz]

btw: this seems to be related to #271 although with different symptoms.

[plq]

huh. thanks for the report. i'll have a look.

[FelixSchwarz]

I noticed that the bug doesn't occur every time so I created a git which reproduces the issue: https://gist.github.com/FelixSchwarz/6507982

[plq]

of course, i remember this :) i'm very busy at the moment but i'll fix this first thing i got some time.

[FelixSchwarz]

Thank you for looking into this. Unfortunately the (likely same) problem bit me in a slightly different situation which I can not work around that easily: https://gist.github.com/FelixSchwarz/6508034

Probably I have to debug this on my own so if you have any pointers I'd be glad. I'm suspecting that 'extends' should be set correctly for my Customer class in the second gist (it's None in the current code)?

[FelixSchwarz]

sorry for spamming but just as a reference: My current workaround for gist 2 ist to set 'extends' explicitely in the class definition (__extends__ = Unicode). I think this shouldn't be necessary but at least I have workaround.

[plq]

that sounds like the right thing to do until i fix this.

[plq]

fixed. reopen if not happy.