Sorry Mark,
But I am going to add to your problem since I encountered something
this weekend that was similar. If I add a Waiter class to this example:
class Waiter(meta.Model):
name = meta.CharField(maxlength=50)
restaurant = meta.ForeignKey(Restaurant)
def __repr__(self):
return "%s waits at %s" % (self.name, self.get_restaurant())
But, I have a multitude of problems that I don't believe I had before
the recent model overhaul. Here are some example things I tried doing
with my Waiter class that I believe should work:
from django.models.places import places, restaurants, waiters
# Works Fine
p = places.Place(name='Demon Dogs', address='944 W. Fullerton')
p.save()
# Works Fine
r = restaurants.Restaurant(place=p, serves_hot_dogs=True,
serves_pizza=False)
r.save()
# This Fails:
w = r.add_waiter(name="John Doe")
# Traceback (most recent call last):
# File "test_places.py", line 13, in ?
# w = r.add_waiter(name="John Doe")
# File "C:\www\django\utils\functional.py", line 3, in _curried
# return args[0](*(args[1:]+moreargs), **dict(kwargs.items() +
morekwargs.items()))
# File "C:\www\django\core\meta\__init__.py", line 944, in
method_add_related
# obj = rel_mod.Klass(**init_kwargs)
# File "C:\www\django\utils\functional.py", line 3, in _curried
# return args[0](*(args[1:]+moreargs), **dict(kwargs.items() +
morekwargs.items()))
# File "C:\www\django\core\meta\__init__.py", line 755, in
method_init
# raise TypeError, "Invalid value: %r should be a %s instance,
not a %s" % (f.name, f.rel.to, type(rel_obj))
# TypeError: Invalid value: 'restaurant' should be a <Options for
restaurants> instance, not a <class 'django.models.places.Restaurant'>
# So Does This:
w = waiters.Waiter(restaurant=r, name="John Doe")
# Traceback (most recent call last):
# File "test_places.py", line 27, in ?
# w = waiters.Waiter(restaurant=r, name="John Doe")
# File "C:\www\django\utils\functional.py", line 3, in _curried
# return args[0](*(args[1:]+moreargs), **dict(kwargs.items() +
morekwargs.items()))
# File "C:\www\django\core\meta\__init__.py", line 755, in
method_init
# raise TypeError, "Invalid value: %r should be a %s instance,
not a %s" % (f.name, f.rel.to, type(rel_obj))
# TypeError: Invalid value: 'restaurant' should be a <Options for
restaurants> instance, not a <class 'django.models.places.Restaurant'>
# This Hack Works
w = waiters.Waiter(restaurant_id=r.place_id, name="John Doe")
w.save()
# But Even with a Correct Data Structure this Fails
print w.get_restaurant()
# Traceback (most recent call last):
# File "test_places.py", line 43, in ?
# print w.get_restaurant()
# File "C:\www\django\utils\functional.py", line 3, in _curried
# return args[0](*(args[1:]+moreargs), **dict(kwargs.items() +
morekwargs.items()))
# File "C:\www\django\core\meta\__init__.py", line 873, in
method_get_many_to_one
# retrieved_obj = mod.get_object(**{'%s__exact' %
field_with_rel.rel.field_name: val})
# File "C:\www\django\utils\functional.py", line 3, in _curried
# return args[0](*(args[1:]+moreargs), **dict(kwargs.items() +
morekwargs.items()))
# File "C:\www\django\core\meta\__init__.py", line 1083, in
function_get_object
# obj_list = function_get_list(opts, klass, **kwargs)
# File "C:\www\django\core\meta\__init__.py", line 1123, in
function_get_list
# return list(function_get_iterator(opts, klass, **kwargs))
# File "C:\www\django\core\meta\__init__.py", line 1105, in
function_get_iterator
# select, sql, params = function_get_sql_clause(opts, **kwargs)
# File "C:\www\django\core\meta\__init__.py", line 1302, in
function_get_sql_clause
# tables2, join_where2, where2, params2, _ =
_parse_lookup(kwargs.items(), opts)
# File "C:\www\django\core\meta\__init__.py", line 1231, in
_parse_lookup
# _throw_bad_kwarg_error(kwarg)
# File "C:\www\django\core\meta\__init__.py", line 1181, in
_throw_bad_kwarg_error
# raise TypeError, "got unexpected keyword argument '%s'" %
kwarg
# TypeError: got unexpected keyword argument 'place__exact'
Originally, I was going to ditch the use of OneToOne because I thought
I was simply using it incorrectly in my design... but after seeing
Mark's post and whipping up this example, I believe there is a bug.
I also hope my post clarifies not confuses Mark's post... because I
believe they are related issues.
regards,
-ian
