I am working with a proxy model that does not seem to work with the
'unique_together' of the model being proxied.
What I have is:
class Parent(Model):
id = AutoField(primary_key=True)
name = CharField()
stuff = CharField()
class Meta:
ordering = ['name']
unique_together = (('name', 'stuff'),)
class Myproxy(Parent):
class Meta:
proxy = True
def __init__(self, *args, **kwargs):
super(Myproxy, self).__init__(*args, **kwargs)
self.stuff = "test"
If I use the Parent model and try to enter, 'myname' and 'test' as the
name/stuff entries twice, I get the usual warning on the second attempt;
the admin telling me that this model entry already exists.
However, if I try the same thing on the Myproxy model (which has a form
without the stuff field; as its meant to be a preset value), I get an:
IntegrityError at /admin/....../add/
(1062, "Duplicate entry 'myname-test' for key 'name'")
The stack trace is as follows:
Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py"
in get_response
115. response = callback(request, *callback_args,
**callback_kwargs)
File
"/usr/local/lib/python2.7/dist-packages/django/contrib/admin/options.py" in
wrapper
372. return self.admin_site.admin_view(view)(*args,
**kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/utils/decorators.py" in
_wrapped_view
91. response = view_func(request, *args, **kwargs)
File
"/usr/local/lib/python2.7/dist-packages/django/views/decorators/cache.py"
in _wrapped_view_func
89. response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/sites.py"
in inner
202. return view(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/utils/decorators.py" in
_wrapper
25. return bound_func(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/utils/decorators.py" in
_wrapped_view
91. response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/utils/decorators.py" in
bound_func
21. return func(self, *args2, **kwargs2)
File "/usr/local/lib/python2.7/dist-packages/django/db/transaction.py" in
inner
223. return func(*args, **kwargs)
File
"/usr/local/lib/python2.7/dist-packages/django/contrib/admin/options.py" in
add_view
1007. self.save_model(request, new_object, form, False)
File
"/usr/local/lib/python2.7/dist-packages/django/contrib/admin/options.py" in
save_model
740. obj.save()
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py" in
save
546. force_update=force_update,
update_fields=update_fields)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py" in
save_base
591. update_fields=update_fields)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py" in
save_base
650. result = manager._insert([self], fields=fields,
return_id=update_pk, using=using, raw=raw)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/manager.py"
in _insert
215. return insert_query(self.model, objs, fields, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in
insert_query
1675. return query.get_compiler(using=using).execute_sql(return_id)
File
"/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py"
in execute_sql
937. cursor.execute(sql, params)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/util.py" in
execute
41. return self.cursor.execute(sql, params)
File
"/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py"
in execute
122. six.reraise(utils.IntegrityError,
utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
File
"/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py"
in execute
120. return self.cursor.execute(query, args)
File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py" in execute
174. self.errorhandler(self, exc, value)
File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py" in
defaulterrorhandler
36. raise errorclass, errorvalue
(FTR, I have also tried overriding the model save(), but again get an
IntegrityError, instead of Django performing the expected check).
I am obviously missing some key piece of code, but cannot see what it is.
Thanks
Derek
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