Question

所以我将我的Django项目复制到一个新服务器，复制环境并将表导入到本地mysql数据库。

但是当我尝试运行makemigrations时它会给我TypeError：allow_migrate（）得到一个意外的关键字参数＆＃39; model_name＆＃39;

这是完整的堆栈跟踪：

Traceback (most recent call last):
   File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/cicd/.local/lib/python2.7/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
utility.execute()
File "/home/cicd/.local/lib/python2.7/site-packages/django/core/management/__init__.py", line 359, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/cicd/.local/lib/python2.7/site-packages/django/core/management/base.py", line 305, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/cicd/.local/lib/python2.7/site-packages/django/core/management/base.py", line 353, in execute
self.check()
File "/home/cicd/.local/lib/python2.7/site-packages/django/core/management/base.py", line 385, in check
include_deployment_checks=include_deployment_checks,
File "/home/cicd/.local/lib/python2.7/site-packages/django/core/management/base.py", line 372, in _run_checks
return checks.run_checks(**kwargs)
File "/home/cicd/.local/lib/python2.7/site-packages/django/core/checks/registry.py", line 81, in run_checks
new_errors = check(app_configs=app_configs)
File "/home/cicd/.local/lib/python2.7/site-packages/django/core/checks/model_checks.py", line 30, in check_all_models
errors.extend(model.check(**kwargs))
File "/home/cicd/.local/lib/python2.7/site-packages/django/db/models/base.py", line 1266, in check
errors.extend(cls._check_fields(**kwargs))
File "/home/cicd/.local/lib/python2.7/site-packages/django/db/models/base.py", line 1337, in _check_fields
errors.extend(field.check(**kwargs))
File "/home/cicd/.local/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 893, in check
errors = super(AutoField, self).check(**kwargs)
File "/home/cicd/.local/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 208, in check
errors.extend(self._check_backend_specific_checks(**kwargs))
File "/home/cicd/.local/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 310, in _check_backend_specific_checks
if router.allow_migrate(db, app_label, model_name=self.model._meta.model_name):
File "/home/cicd/.local/lib/python2.7/site-packages/django/db/utils.py", line 300, in allow_migrate
allow = method(db, app_label, **hints)
TypeError: allow_migrate() got an unexpected keyword argument 'model_name'

感谢您在调试此错误并尝试了解导致此错误的原因时提供的任何帮助。

Answer 1

当我从1.6。*移动到1.10时，我遇到了同样的问题。最后我发现问题是由 DATABASE_ROUTERS

引起的

我写的老版本

class OnlineRouter(object):
    # ... 
    def allow_migrate(self, db, model):
        if db == 'myonline':
            return model._meta.app_label == 'online'
        elif model._meta.app_label == 'online':
            return False
        return None

它可以像这样重写

class OnlineRouter(object):
    # ... 
    def allow_migrate(self, db, app_label, model_name=None, **hints):
        if db == 'my_online':
            return app_label == 'online'
        elif app_label == 'online':
            return False
        return None

更多详细信息，请参阅https://docs.djangoproject.com/en/1.10/topics/db/multi-db/#an-example

Django TypeError：allow_migrate（）得到了一个意外的关键字参数＆＃39; model_name＆＃39;

1 个答案: