django 1.7迁移 - 如何清除所有迁移并从头开始？ [英] django 1.7 migrations -- how do I clear all migrations and start over from scratch?

问题描述

所以我现在正在快速迭代一个django应用程序，我不断调整models.py。在一两天的编程和测试过程中，我生成了几十个迁移文件。有时我真的把模式分开，完全重新做。这导致迁移过程对默认值和空值等提出很大的抱怨。如果可能的话，我只想抓住所有的迁移资料，重新启动迁移，我终于知道我在做什么了。我的方法到目前为止是：

So I'm rapidly iterating on a django app at the moment and I'm constantly adjusting models.py. Over the course of a day or two of programming and testing I generate a couple dozen migration files. Sometimes I really tear the schema apart and completely re-do it. This causes the migration process to complain a great deal about defaults and null values and so on. If possible, I would just like to scratch all the migration stuff and re-start the migrations now that I finally know what I'm doing. My approach thus far has been the following:

1. 删除迁移文件夹中的所有内容，除了 __ init __。py 。


2. 放入我的PostgreSQL控制台，然后执行以下操作： DELETE FROM south_migrationhistory WHERE app_name ='my_app'; li>
   
3. 在PostgreSQL控制台中，删除与my_app关联的所有表。


4. 重新运行 ./ manage.py makemigrations my_app - 这会在我的迁移文件夹中生成一个 0001_initial.py 文件。


5. 运行 ./管理迁移my_app - 我希望这个命令重新构建所有的表，而是说：没有迁移应用。

1. delete everything in the migrations folder except for __init__.py.
2. drop into my PostgreSQL console and do: DELETE FROM south_migrationhistory WHERE app_name='my_app';
3. while at the PostgreSQL console, drop all of the tables associated with my_app.
4. re-run ./manage.py makemigrations my_app - this generates a 0001_initial.py file in my migrations folder.
5. run ./manage migrate my_app - I expect this command to re-build all my tables, but instead it says: "No migrations to apply."

什么给了？

另外，是 south_migrationhistory 数据库表仍然在玩，现在我已经倾销了南方，并已经切换到Django 1.7？

Also, is the south_migrationhistory database table still in play now that I've dumped South and have switched to Django 1.7?

谢谢。

推荐答案

所以我在q中概述了一步一步的计划uestion确实有效，但不是从 south_migrationhistory 数据库表中删除行，而是必须从 django_migrations 数据库中删除行表

So the step-by-step plan I outlined in my question does work, but instead of deleting rows from the south_migrationhistory database table, I had to delete rows from the django_migrations database table.

命令是： DELETE FROM django_migrations WHERE app ='my_app'

一旦完成，您将能够从头开始重新运行迁移。

Once this is done, you will be able to re-run your migrations from scratch.

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