I tried to submit a Trac ticket on this, but apparently you have to
log in first to submit new tickets, and I honestly can't find a link
to register a password with the site.
Anyway, with Elixir 0.4, there is a very strange broken interaction
with zope.interfaces. I haven't debugged this enough to know where
the problem lies, but the same code worked with Elixir 0.3 so I'm
guessing the new metaclass stuff in 0.4 broke this. Here's a boiled
down example.
-----snip snip-----
from zope.interface import implements, Interface, Attribute
class MyInterface(Interface):
my_attribute = Attribute('my attribute')
from elixir import *
import sqlalchemy
class My(Entity):
implements(MyInterface)
my_attribute = Field(Unicode)
yours = ManyToOne('My')
def __init__(self, what):
super(My, self).__init__()
my_attribute = what.lower()
class Your(Entity):
#__provides__ = False
your_attribute = Field(Unicode)
options_defaults['autosetup'] = False
engine = sqlalchemy.create_engine('sqlite:////tmp/foo.db')
metadata.bind = engine
setup_all()
create_all()
-----snip snip-----
% python2.5 foo.py
Traceback (most recent call last):
File "/tmp/foo.py", line 30, in <module>
setup_all()
File "/usr/local/lib/python2.5/site-packages/PIL/__init__.py", line
114, in setup_all
File "/Users/barry/projects/mailman/3.0/staging/Elixir-0.4.0-
py2.5.egg/elixir/entity.py", line 739, in setup_entities
File "/Users/barry/projects/mailman/3.0/staging/Elixir-0.4.0-
py2.5.egg/elixir/entity.py", line 317, in setup_events
File "/usr/local/lib/python2.5/inspect.py", line 208, in getmembers
results.append((key, value))
AttributeError: __provides__
If you uncomment the __provides__ bogosity in class Your, you get no
exception. I have no idea why that PIL frame is in the traceback, but
that seems consistent. It might even be a clue <wink>.
-Barry
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