在我的特定情况下，是这样的：

1. 重命名模型类名称及其所有引用。


2. 运行 ./ manage.py makemigrations 。


3. 检查数据库中应用程序自带表的引用。普通引用和通过 django_content_type 表。



4. 检查数据库中是否有来自Django表的引用。

     my_table-+-django_admin_log 
   `-auth_permission-+-auth_group_permissions 
    `-auth_user_user_permissions 
    

   在我的情况下，我在 django_admin_log $中没有记录c $ c>， auth_group_permissions ， auth_user_user_permissions 。




5. 运行 ./ manage.py迁移。当它询问时：

    以下内容类型是陈旧的，需要删除：
   
    myapp | foo 
   
   通过外键与这些内容类型相关的任何对象也将被删除
   。您确定要删除这些内容类型吗？ 
   如果您不确定，请回答否。 
   
   键入是继续，或否取消：
    

   只有在上述三个表中的 foo 表中都没有引用记录的记录时，您才能回答是。或者，如果丢失对您而言不是问题。

Let's say I have this model:

class Foo(models.Model):
    name = models.CharField(max_length=255)

I want to rename it to Bar. What steps should I take? And how do I deal with The following content types are stale prompt?

In my particular case it was like so:

1. Rename model class name and all its references.
2. Run ./manage.py makemigrations.
3. Inspect your database for references from tables your apps own. Ordinary references and references via django_content_type table. Deal with them accordingly.

4. Inspect your database for references from Django tables. Most likely that would be:

   my_table-+-django_admin_log
            `-auth_permission-+-auth_group_permissions
                              `-auth_user_user_permissions
   

   In my case I had no records in django_admin_log, auth_group_permissions, auth_user_user_permissions.

5. Run ./manage.py migrate. When it asks:

   The following content types are stale and need to be deleted:                
   
       myapp | foo
   
   Any objects related to these content types by a foreign key will also         
   be deleted. Are you sure you want to delete these content types?              
   If you're unsure, answer 'no'.                                                  
   
       Type 'yes' to continue, or 'no' to cancel:
   

   You can answer yes only if you have no records referencing records in foo table in the three tables mentioned above. Or if losing them is not an issue for you.