Django 迁移错误 - NodeNotFoundError

Question

Django 1.8 版

尝试在我的项目中迁移新添加的应用程序。这是回溯错误：

Traceback (most recent call last):
  File "./manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 354, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 346, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 394, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 445, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/makemigrations.py", line 63, in handle
    loader = MigrationLoader(None, ignore_no_migrations=True)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 47, in __init__
    self.build_graph()
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 318, in build_graph
    _reraise_missing_dependency(migration, parent, e)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 288, in _reraise_missing_dependency
    raise exc
django.db.migrations.graph.NodeNotFoundError: Migration weather.0001_initial dependencies reference nonexistent parent node (u'machines', u'0006_auto_20150921_1327')

我没有找到很多有用的信息来研究这个。语法在所有模型中都是正确的。这是没有意义的：这只是一个工作项目的副本。所以它可以在一台计算机上运行，​​但不是在这里。它所引用的机器模型已经创建并且正在运行。有任何想法吗？？？

Answer 1

您收到错误是因为您尝试运行的迁移weather.0001_initial 依赖于不存在的迁移machines.0006_auto_20150921_1327。

如果您找不到丢失的迁移文件，则必须删除并重新创建 weather 应用的迁移，以便它们不依赖于丢失的迁移。