如何使用PostgreSQL数据库在Django中使用ArrayField

Question

我想在我的django models.py中导入:

from django.contrib.postgres.fields import ArrayField

我读了这个文档https://docs.djangoproject.com/en/dev/ref/contrib/，我添加了"django.contrib。postgres'进入我的INSTALLED_APPS在settings.py，但当我试图同步我的db或runserver我得到" importterror: No module named postgres"

还有什么我应该做或安装的吗?Django.contrib.postgres是核心发行版的一部分，对吗?

这是trace:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "c:Python27libsite-packagesdjangocoremanagement__init__.py", line 399, in execute_from_com
    utility.execute()
  File "c:Python27libsite-packagesdjangocoremanagement__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "c:Python27libsite-packagesdjangocoremanagementbase.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "c:Python27libsite-packagesdjangocoremanagementbase.py", line 280, in execute
    translation.activate('en-us')
  File "c:Python27libsite-packagesdjangoutilstranslation__init__.py", line 130, in activate
    return _trans.activate(language)
  File "c:Python27libsite-packagesdjangoutilstranslationtrans_real.py", line 188, in activate
    _active.value = translation(language)
  File "c:Python27libsite-packagesdjangoutilstranslationtrans_real.py", line 177, in translation
    default_translation = _fetch(settings.LANGUAGE_CODE)
  File "c:Python27libsite-packagesdjangoutilstranslationtrans_real.py", line 159, in _fetch
    app = import_module(appname)
  File "c:Python27libsite-packagesdjangoutilsimportlib.py", line 40, in import_module
    __import__(name)
ImportError: No module named postgres

Answer 1

django.contrib.postgres将成为1.8发布的一部分。

Answer 2

幸运的是，在django中有几个非官方的postgresql数组实现。其中最著名的是djorm-pgarray。另一个选择是Django - darray，当Django 1.8最终推出时，迁移应该不会太困难。