测试Django用户配置文件一对一链接

我正在向我的Django应用程序添加一个配置文件,以存储更多用户信息。跟随 https://simpleisbetterthancomplex.com/tutorial/2016/07/22/how-to-extend-django-user-model.html#onetoone

然而,我得到一个错误时,测试它。我使用的是来自的默认用户模型 django.contrib.auth .

型号.py

from django.db import models
from django.contrib.auth import get_user_model
from django.db.models.signals import post_save
from django.dispatch import receiver    


class Profile(models.Model):
    user = models.OneToOneField(get_user_model(), on_delete=models.CASCADE)

@receiver(post_save, sender=get_user_model())
def create_user_profile(sender, instance, created, **kwargs):
    if created:
        Profile.objects.create(user=instance)

@receiver(post_save, sender=get_user_model())
def save_user_profile(sender, instance, **kwargs):
    instance.profile.save()

测试/测试_型号.py

from django.test import TestCase
from app.models import Profile


class ProfileModelTests(TestCase):
    @classmethod
    def setUpTestData(cls):
        Profile.objects.create()

    def test_can_create_profile(self):
        pass

/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/psycopg2/__init__.py:144: UserWarning: The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: <http://initd.org/psycopg/docs/install.html#binary-install-from-pypi>.
  """)
..........E............
======================================================================
ERROR: setUpClass (project-api.polls.tests.test_models.ProfileModelTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
psycopg2.IntegrityError: null value in column "user_id" violates not-null constraint
DETAIL:  Failing row contains (158, null).


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/test/testcases.py", line 1002, in setUpClass
    cls.setUpTestData()
  File "/Users/user/programming/gatsby/project-api/polls/tests/test_models.py", line 86, in setUpTestData
    Profile.objects.create()
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/query.py", line 417, in create
    obj.save(force_insert=True, using=self.db)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/base.py", line 729, in save
    force_update=force_update, update_fields=update_fields)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/base.py", line 759, in save_base
    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/base.py", line 842, in _save_table
    result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/base.py", line 880, in _do_insert
    using=using, raw=raw)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/query.py", line 1125, in _insert
    return query.get_compiler(using=using).execute_sql(return_id)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/models/sql/compiler.py", line 1283, in execute_sql
    cursor.execute(sql, params)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/backends/utils.py", line 68, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/Users/user/.local/share/virtualenvs/project-api-HgI9cQzm/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
django.db.utils.IntegrityError: null value in column "user_id" violates not-null constraint
DETAIL:  Failing row contains (158, null).


----------------------------------------------------------------------
Ran 22 tests in 2.198s

FAILED (errors=1)
Using existing test database for alias 'default'...
System check identified no issues (0 silenced).
Preserving test database for alias 'default'...