Opened 4 years ago
Last modified 4 years ago
#32660 closed Bug
Endless loop upon delete — at Initial Version
| Reported by: | kr | Owned by: | nobody |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | 3.1 |
| Severity: | Normal | Keywords: | |
| Cc: | Triage Stage: | Unreviewed | |
| Has patch: | no | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
I have three models whereas one has a custom init method:
class Foo(models.Model):
my_foo = models.CharField(max_length=1000)
class Bar(models.Model):
bar1 = models.CharField(max_length=1000, default="")
bar2 = models.BooleanField(default=False)
foo = models.ForeignKey(Foo, on_delete=models.CASCADE)
def __init__(self, *args, **kwargs):
super(Bar, self).__init__(*args, **kwargs)
print("check")
self._original_bar1 = self.bar1
self._original_bar2 = self.bar2
class Baz(models.Model):
bar = models.ForeignKey(Bar, on_delete=models.CASCADE)
Creating a Foo object and a corresponding Bar object (via the admin interface) works fine.
However, when I delete the Foo object, this results in an endless loop of the init method.
If I rewrite the models slightly as
from django.db import models
class Foo(models.Model):
my_foo = models.CharField(max_length=1000)
class AbstractBar2(models.Model):
bar2 = models.BooleanField(default=False)
def __init__(self, *args, **kwargs):
super(AbstractBar2, self).__init__(*args, **kwargs)
print("check")
self._original_bar2 = self.bar2
class Meta:
abstract = True
class AbstractBar1(models.Model):
bar1 = models.CharField(max_length=1000, default="")
def __init__(self, *args, **kwargs):
super(AbstractBar1, self).__init__(*args, **kwargs)
print("check")
self._original_bar1 = self.bar1
class Meta:
abstract = True
class Bar(AbstractBar1, AbstractBar2):
foo = models.ForeignKey(Foo, on_delete=models.CASCADE)
class Baz(models.Model):
bar = models.ForeignKey(Bar, on_delete=models.CASCADE)
it errors out on
Fatal Python error: _Py_CheckRecursiveCall: Cannot recover from stack overflow. Python runtime state: initialized Current thread 0x000035d0 (most recent call first): File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\fields\__init__.py", line 807 in get_prep_value File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\fields\__init__.py", line 1770 in get_prep_value File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\lookups.py", line 76 in get_prep_lookup File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\lookups.py", line 24 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\sql\query.py", line 1165 in build_lookup File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\sql\query.py", line 1319 in build_filter File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\sql\query.py", line 1377 in _add_q File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\sql\query.py", line 1358 in add_q File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 969 in _filter_or_exclude_inplace File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 962 in _filter_or_exclude File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 942 in filter File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\manager.py", line 85 in manager_method File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 623 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 26 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 14 in __init__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 24 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 26 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 14 in __init__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 24 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 26 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 14 in __init__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 24 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 26 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 14 in __init__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 24 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 26 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 14 in __init__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 24 in __init__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 513 in from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 71 in __iter__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 1308 in _fetch_all File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 269 in __len__ File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query.py", line 425 in get File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\base.py", line 635 in refresh_from_db File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\db\models\query_utils.py", line 149 in __get__ File "C:\Users\name\PycharmProjects\djangoTest\foobar\models.py", line 26 in __init__ ... Thread 0x00000a60 (most recent call first): File "C:\Users\name\AppData\Local\Programs\Python\Python39\lib\selectors.py", line 315 in _select File "C:\Users\name\AppData\Local\Programs\Python\Python39\lib\selectors.py", line 324 in select File "C:\Users\name\AppData\Local\Programs\Python\Python39\lib\socketserver.py", line 232 in serve_forever File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\servers\basehttp.py", line 216 in run File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\management\commands\runserver.py", line 139 in inner_run File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\utils\autoreload.py", line 53 in wrapper File "C:\Users\name\AppData\Local\Programs\Python\Python39\lib\threading.py", line 888 in run File "C:\Users\name\AppData\Local\Programs\Python\Python39\lib\threading.py", line 950 in _bootstrap_inner File "C:\Users\name\AppData\Local\Programs\Python\Python39\lib\threading.py", line 908 in _bootstrap Thread 0x00000c7c (most recent call first): File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\utils\autoreload.py", line 374 in tick File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\utils\autoreload.py", line 324 in run_loop File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\utils\autoreload.py", line 318 in run File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\utils\autoreload.py", line 603 in start_django File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\utils\autoreload.py", line 618 in run_with_reloader File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\management\commands\runserver.py", line 103 in run File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\management\commands\runserver.py", line 96 in handle File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\management\base.py", line 371 in execute File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\management\commands\runserver.py", line 61 in execute File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\management\base.py", line 330 in run_from_argv File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\management\__init__.py", line 395 in execute File "C:\Users\name\PycharmProjects\global39\djangoTest\lib\site-packages\django\core\management\__init__.py", line 401 in execute_from_command_line File "C:\Users\name\PycharmProjects\djangoTest\manage.py", line 18 in main File "C:\Users\name\PycharmProjects\djangoTest\manage.py", line 22 in <module> Process finished with exit code -1
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