问题:Django 与 postgresql - manage.py syncdb 返回错误

我从 Django 开始。我设置了一些使用 SQLite 工作的站点,但是在将 DB 引擎更改为 postgresql manage.py syncdb 后返回错误。我已经用谷歌搜索了 2 天,但对我仍然没有任何作用。Postgres 用户 'joe' 具有超级用户权限和本地 'joe ' 数据库存在。

Postgresql 正在运行:

/etc/init.d/postgresql status
Running clusters: 9.1/main

这是我的部分 settings.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',  #
        'NAME': 'joe',                                       # 
        'USER': 'joe',                                       # 
        'PASSWORD': 'asdf',                                  # 
        'HOST': 'localhost',                                 # 
        'PORT': '5432',                       .
    }
}

和错误:

$ python manage.py syncdb
Syncing...
Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    execute_manager(settings)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager
    utility.execute()
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/core/management/base.py", line 351, in handle
    return self.handle_noargs(**options)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/south/management/commands/syncdb.py", line 90, in handle_noargs
    syncdb.Command().execute(**options)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/core/management/base.py", line 351, in handle
    return self.handle_noargs(**options)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 59, in handle_noargs
    tables = connection.introspection.table_names()
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/db/backends/__init__.py", line 792, in table_names
    return self.get_table_list(cursor)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/db/backends/postgresql/introspection.py", line 31, in get_table_list
    AND pg_catalog.pg_table_is_visible(c.oid)""")
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/db/backends/util.py", line 34, in execute
    return self.cursor.execute(sql, params)
  File "/home/m/.virtualenvs/mayan/local/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 44, in execute
    return self.cursor.execute(query, args)
django.db.utils.DatabaseError: current transaction is aborted, commands ignored until end of transaction block

谢谢!

解答

我的建议是去django.db.backends.postgresql_psycopg2.base并插入一个print query以便CursorWrapper看起来像。

class CursorWrapper:
    ...
    def execute(self, query, args=None):
        print query # New print statement here
        try:
            return self.cursor.execute(query, args)

这将打印出命中数据库的每个查询,并希望在尝试运行python manage.py syncdb时能够识别有问题的 SQL 查询