Question

我正在尝试将一个Django（1.8）应用程序部署到Heroku，运行时Python 3.4.2。该应用程序成功运行（除了未创建表的事实），但在尝试运行syncdb时，我收到以下错误：

Running `python manage.py syncdb` attached to terminal... up, run.5851
/app/.heroku/python/lib/python3.4/site-packages/django/core/management       
/commands/syncdb.py:24: RemovedInDjango19Warning: The syncdb command 
will be removed in Django 1.9
warnings.warn("The syncdb command will be removed in Django 1.9", RemovedInDjango19Warning)

Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.4/site-packages/django/db/migrations/loader.py", line 157, in check_key
return list(self.graph.root_nodes(key[0]))[0]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.4/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.4/site-packages/django /core/management/__init__.py", line 330, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.4/site-packages/django/core/management/base.py", line 390, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.4/site-packages/django/core/management/base.py", line 441, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.4/site-packages/django/core/management/commands/syncdb.py", line 25, in handle
call_command("migrate", **options)
File "/app/.heroku/python/lib/python3.4/site-packages/django/core/management/__init__.py", line 120, in call_command
return command.execute(*args, **defaults)
File "/app/.heroku/python/lib/python3.4/site-packages/django/core/management/base.py", line 441, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 93, in handle
executor = MigrationExecutor(connection, self.migration_progress_callback)
File "/app/.heroku/python/lib/python3.4/site-packages/django/db/migrations/executor.py", line 19, in __init__
self.loader = MigrationLoader(self.connection)
File "/app/.heroku/python/lib/python3.4/site-packages/django/db/migrations/loader.py", line 47, in __init__
self.build_graph()
File "/app/.heroku/python/lib/python3.4/site-packages/django/db/migrations/loader.py", line 287, in build_graph
parent = self.check_key(parent, key[0])
File "/app/.heroku/python/lib/python3.4/site-packages/django/db/migrations/loader.py", line 164, in check_key
raise ValueError("Dependency on app with no migrations: %s" % key[0])
ValueError: Dependency on app with no migrations: authentication

我正在使用sqlite。

Answer 1

在您的开发计算机上，使用python manage.py makemigrations创建迁移。然后，假设您的迁移文件夹被推送到heroku，则在heroku运行python manage.py migrate而不是python manage.py syncdb。请参阅docs。

Answer 2

我想进入heroku的机器 bash ：

Not Working Eg: Input: echo "abc-de-aa-zzzz-1.2.3-4,abc-de-aa-kkkk-1.2.5-4" | sed -E 's/(^([a-z]{3}-[a-z]{1,5}-[a-z]{1,5}-[a-z]{1,15})).*/\1/' Current output: abc-de-aa-zzzz Correct output: abc-de-aa-zzzz,abc-de-aa-kkkk This one works as well: abc-de-aa-zzzz abc-de-aa-kkkk

然后制作heroku run bash：

makemigrations

最后，

heroku run python manage.py makemigrations

Answer 3

对于我，我使用相同的命令解决了这个问题，我们在本地服务器中使用了前缀＆＃34; heroku run＆＃34;那是......

例如： -

python manage.py makemigrations

它可以在我们的本地工作，但对于heroku，像这样： -

heroku run python manage.py makemigrations

Django迁移在heroku中失败

3 个答案: