问题描述
假设我有这个模型: class Foo(models.Model):
名称=模型。 CharField(max_length = 255)
我想将其重命名为 Bar
。我应该采取什么步骤?以及如何处理以下内容类型是过时的
提示符?
在我的特定情况下,是这样的:
- 重命名模型类名称及其所有引用。
- 运行
./ manage.py makemigrations
。 - 检查数据库中应用程序自带表的引用。普通引用和。
-
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
。 -
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:
- Rename model class name and all its references.
- Run
./manage.py makemigrations
. - Inspect your database for references from tables your apps own. Ordinary references and references via
django_content_type
table. Deal with them accordingly. 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
.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 infoo
table in the three tables mentioned above. Or if losing them is not an issue for you.
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