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[英]'django.db.backends.posgresql_psycopg2' isn't an available database backend
[英]django 2.1.3 'django.db.backends.postgis' isn't an available database backend
我正在尝试将geodjango用于一个项目。 在我使用geodjango之前,我试图从以下教程中学习它: https : //docs.djangoproject.com/en/2.1/ref/contrib/gis/tutorial/
我最初安装了django 1.11,并尝试了该教程(对我来说很愚蠢)。 但是,在卸载django 1.11和安装django 2.1.3之后,我遇到了一些错误。
根据教程制作模型后,使用以下命令
python3 manage.py makemigrations
我最终收到以下错误:
Traceback (most recent call last):
File "/home/aihoque2/.local/lib/python3.6/site- packages/django/db/utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 941, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'django.db.backends.postgis'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
django.setup()
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/apps/registry.py", line 112, in populate
app_config.import_models()
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/apps/config.py", line 198, in import_models
self.models_module = import_module(models_module_name)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/db/models/base.py", line 101, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/db/models/base.py", line 305, in add_to_class
value.contribute_to_class(cls, name)
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/db/models/options.py", line 203, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/db/__init__.py", line 33, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/db/utils.py", line 202, in __getitem__
backend = load_backend(db['ENGINE'])
File "/home/aihoque2/.local/lib/python3.6/site-packages/django/db/utils.py", line 125, in load_backend
) from e_user
django.core.exceptions.ImproperlyConfigured: 'django.db.backends.postgis' isn't an available database backend.
Try using 'django.db.backends.XXX', where XXX is one of:
'mysql', 'oracle', 'postgresql', 'sqlite3'
这是我在settings.py中的配置:
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.gis',
'world',
]
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgis',
'NAME': 'XXXX', #redacted
'USER': 'XXXX', #redacted
'PASSWORD': 'XXXX', #redacted
'HOST': 'localhost',
'PORT': '5432',
}
}
我最初在python2上使用django 1.11时处理了此问题,但是即使使用python3,我仍然会收到错误。 当我跑步
python3 -m django version
我得到“ 2.1.3”。 我不确定为什么django 2.1.3不会以postgis作为后端,即使本教程告诉我这样做也是如此。 django安装是否有问题,例如当我运行时
django-admin
它运行1.11脚本而不是2.1.3? 我很迷茫,这很令人沮丧。
postgis后端位于django.contrib.gis
,而不是django.db
:
'ENGINE': 'django.contrib.gis.db.backends.postgis',
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