[tg 1.1b3, sqlobject 0.10.4]
Tg1 is doing something weird when it encounters python inheritance in
an sqlobject model schema.
The following works perfectly in sqlobject, forgetting tg for a second:
###########################################################
from sqlobject import SQLObject
from sqlobject import StringCol
class data(SQLObject):
item = StringCol( )
class deleted_data(data):
time = DateTimeCol( )
###########################################################
The idea is to copy all fields from data to deleted_data and add some
more to deleted_data. This is described in
http://www.sqlobject.org/FAQ.html#how-does-inheritance-work
So I'd like to have a similar pattern in tg1. So I put the following
into my freshly quickstarted model.py:
###########################################################
from turbogears.database import PackageHub
from sqlobject import SQLObject
from sqlobject import StringCol, UnicodeCol, IntCol, DateTimeCol
__connection__ = hub = PackageHub('mytest')
class data(SQLObject):
item = StringCol( )
class deleted_data(data):
time = DateTimeCol( )
############################################################
Now, when I try to import model.py in a python session, it fails:
Python 2.5.1 (r251:54863, Oct 30 2007, 13:45:26)
[GCC 4.1.2 20070925 (Red Hat 4.1.2-33)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import model
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "model.py", line 11, in <module>
class deleted_data(data):
File
"/usr/lib/python2.5/site-packages/SQLObject-0.10.4-py2.5.egg/sqlobject/declarative.py",
line 92, in __new__
cls.__classinit__(cls, new_attrs)
File
"/usr/lib/python2.5/site-packages/SQLObject-0.10.4-py2.5.egg/sqlobject/main.py",
line 761, in __classinit__
if not connection and not getattr(cls, '_connection', None):
File
"/usr/lib/python2.5/site-packages/TurboGears-1.1b3-py2.5.egg/turbogears/database.py",
line 297, in __get__
self.set_hub()
File
"/usr/lib/python2.5/site-packages/TurboGears-1.1b3-py2.5.egg/turbogears/database.py",
line 315, in set_hub
raise KeyError, "No database configuration found!"
KeyError: 'No database configuration found!'
Note that I don't want to insert anything into the database, I know
that in order to do that (i.e. use the model outside of tg), I need to
follow http://docs.turbogears.org/1.0/ModelOutsideTG
Here I'm merely importing the module and it fails.
Naturally, if the python inheritance is left out, i.e. I have the
following in model.py
#############################################################
from turbogears.database import PackageHub
from sqlobject import SQLObject
from sqlobject import StringCol, UnicodeCol, IntCol, DateTimeCol
__connection__ = hub = PackageHub('mytest')
class data(SQLObject):
item = StringCol( )
# class deleted_data(data):
# time = DateTimeCol( )
#############################################################
I can import model in a python session:
Python 2.5.1 (r251:54863, Oct 30 2007, 13:45:26)
[GCC 4.1.2 20070925 (Red Hat 4.1.2-33)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import model
>>>
So it seems tg1 is trying to do something that is not really necessary
since I don't want to insert anything into the db, I don't want to use
it in any way, I just would like to import it.
Any ideas what's going on? Should I file a ticket?
Cheers,
Daniel
--
Psss, psss, put it down! - http://www.cafepress.com/putitdown
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