django - 名称错误 : name PositiveSmallIntegerField is not defined

Question

Django 1.5 和 Python 3.2.3，在 Ubuntu 12.04 上。

尝试同步我的数据库时出现非常奇怪的错误。我有一些字段看起来没有错，但是当我运行 python3 manage.py sqlall 时 Django 会吐出这个错误消息..

NameError: name 'PositiveSmallIntegerField' is not defined

嗯？我试过谷歌搜索这个，但在任何地方都没有关于它的一件事。所以我猜我犯了一些愚蠢的错误，但我看不到它。我的models.py 看起来像这样:

from django.db import models

class Song(models.Model):
    own = models.BooleanField(default=True)
    heard = models.DateTimeField(blank=True,null=True)
    release_date = models.DateField(blank=True,null=True)
    style = models.CharField(max_length=255,blank=True,null=True)
    artist = models.CharField(max_length=255,blank=True,null=True)
    featuring = models.CharField(max_length=255,blank=True,null=True)
    title = models.CharField(max_length=255,blank=True,null=True)
    listen = models.URLField(max_length=255,blank=True,null=True)
    highest_chart_pos = models.PositiveSmallIntegerField()
    note = models.TextField(blank=True,null=True)

这就是它的全部内容，我复制粘贴 PositiveSmallIntegerField直接来自 Django 文档，所以我知道其中没有我忽略的错字。那么， PositiveSmallIntegerField 怎么样？ 不是 定义？

Answer 1

把这个扔在这里是因为我发现自己有同样的错误，为一个
还有歌!

from django.db import models

class Track(models.Model):
  release  = models.ForeignKey('Release', on_delete=models.CASCADE)
  position = models.PositiveSmallIntegerField()
  number   = PositiveSmallIntegerField()
  name     = models.CharField(max_length=100)
  length   = models.DurationField()

这里略有不同。我遗漏了 models. 的命名空间在我之前 PositiveSmallIntegerField .看起来你没有这样做，上面，但也许其他有类似错误的人也会犯我的错误。

这是我的堆栈跟踪:

(env) Cam@cambook:~/Sites/juke% python manage.py makemigrations playlists
Traceback (most recent call last):
File "manage.py", line 15, in <module>
    execute_from_command_line(sys.argv)
  File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
    utility.execute()
  File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/core/management/__init__.py", line 347, in execute
    django.setup()
  File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/apps/registry.py", line 112, in populate
    app_config.import_models()
  File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/apps/config.py", line 198, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/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 "/Users/Cam/Sites/juke/playlists/models.py", line 60, in <module>
    class Track(models.Model):
  File "/Users/Cam/Sites/juke/playlists/models.py", line 63, in Track
    number   = PositiveSmallIntegerField()
NameError: name 'PositiveSmallIntegerField' is not defined