我在Ubuntu 13.10和Postgres上使用Django 1.6和Python 3.3。
我的模型User
定义如下:
from django.db import models
from django.contrib.auth.models import AbstractUser
from common.mixins import TimestampMixin
class User(TimestampMixin, AbstractUser):
auth_key = models.CharField(max_length=16)
def __str__(self):
if self.first_name:
if self.last_name:
return "{0} {1}'s Profile".format(
self.first_name, self.last_name)
else:
return "{0}'s Profile".format(self.first_name)
else:
return "{0}'s Profile".format(self.username)
我对__str __
进行了如下测试:
from django.test import TestCase
from accounts.models import User
from common.tests.fixtureless import create_instance
class UserTest(TestCase):
def test_str(self):
initial = {
'username': 'test_username',
'first_name': 'test_first_name',
'last_name': 'test_last_name',
}
user = create_instance(User, **initial)
user.save()
expected = "test_first_name test_last_name's Profile"
self.assertEqual(user.__str__(), expected)
user.delete()
del(initial['last_name'])
user = create_instance(User, **initial)
user.save()
expected = "test_first_name's Profile"
self.assertEqual(user.__str__(), expected)
user.delete()
del(initial['first_name'])
user = create_instance(User, **initial)
user.save()
expected = "test_username's Profile"
self.assertEqual(user.__str__(), expected)
user.delete()
我可以在大约20%的时间内正确运行我的测试套件。但是,有时我会收到以下失败:
ERROR: test_str (blind_tiger.blind_tiger.apps.accounts.tests.UserTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/backends/util.py", line 53, in execute
return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: relation "accounts_user" does not exist
LINE 1: INSERT INTO "accounts_user" ("password", "last_login", "is_s...
^
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/ricomoss/workspace/ses/blind_tiger/blind_tiger/settings/../apps/accounts/tests/models.py", line 18, in test_str
user.save()
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/base.py", line 545, in save
force_update=force_update, update_fields=update_fields)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/base.py", line 573, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/base.py", line 654, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/base.py", line 687, in _do_insert
using=using, raw=raw)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/manager.py", line 232, in _insert
return insert_query(self.model, objs, fields, **kwargs)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/query.py", line 1511, in insert_query
return query.get_compiler(using=using).execute_sql(return_id)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/sql/compiler.py", line 898, in execute_sql
cursor.execute(sql, params)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/backends/util.py", line 53, in execute
return self.cursor.execute(sql, params)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/utils.py", line 99, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/utils/six.py", line 490, in reraise
raise value.with_traceback(tb)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/backends/util.py", line 53, in execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation "accounts_user" does not exist
LINE 1: INSERT INTO "accounts_user" ("password", "last_login", "is_s...
令人沮丧的是,如果我在违规try/except
周围放置user.save()
,那么我可以检查对象,我从不看到此错误。
永远不会产生此错误:
try:
user.save()
except:
raise Exception(user.__dict__)
有什么建议吗?
答案 0 :(得分:2)
我解决了这个问题。尝试先跑:
python manage.py syncdb
答案 1 :(得分:-1)
尝试运行以下命令:
python manage.py migrate --run-syncdb
python manage.py makemigrations appname
python manage.py migrate