预建的 django 项目在迁移时出错

Question

我有一个预先构建的 django 项目，需要在 ubuntu 18 上运行它。使用 postgresql 作为数据库引擎，完成并安装了所有先决条件。为项目创建了一个数据库并添加了具有所需权限的用户，然后将这些设置更新到 settings.py 文件中

然后我运行以下命令来准备迁移并实施它。

# python manage.py makemigrations
No changes detected

&

# python manage.py migrate
Traceback (most recent call last):
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/db/backends/utils.py", line 83, in _execute
    return self.cursor.execute(sql)
psycopg2.ProgrammingError: permission denied to create extension "postgis"
HINT:  Must be superuser to create this extension.


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/hsn/env_banax_api/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
    utility.execute()
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/core/management/__init__.py", line 365, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/core/management/base.py", line 335, in execute
    output = self.handle(*args, **options)
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 77, in handle
    connection.prepare_database()
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/contrib/gis/db/backends/postgis/base.py", line 26, in prepare_database
    cursor.execute("CREATE EXTENSION IF NOT EXISTS postgis")
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/db/backends/utils.py", line 100, in execute
    return super().execute(sql, params)
  File "/home/hsn/env_banax_api/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 "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/home/hsn/env_banax_api/lib/python3.6/site-packages/django/db/backends/utils.py", line 83, in _execute
    return self.cursor.execute(sql)
django.db.utils.ProgrammingError: permission denied to create extension "postgis"
HINT:  Must be superuser to create this extension.

你们中的任何人都知道如何解决它吗？ django 服务器正在运行，但我得到了这个页面，我猜这与数据库连接有关。 附上现在显示的页面截图。

Answer 1

您可以做的是：使用postgres superuser在您的数据库中创建postgis extension。

• 使用超级用户用户名（您在安装 postgresql 时提供的用户名）登录到 postgres shell：

  sudo -i -u psql

• 连接到您的数据库：

  \connect

• 创建 postgis 扩展为：

  创建扩展 postgis；

如果您在创建扩展程序时遇到权限问题，您可以了解用户权限here。