转储数据库并在Django 1.11中删除迁移后稍后使用

Question

Sometimes I have to delete migrations for some reason and I will have to create new data again for django. How do I dump the db and use it later after I delete the migrations?

Answer 1

You have to use the dumpdata command.

The following command will dump the whole database to a db.json file.

./manage.py dumpdata > db.json

After that, you can restore the data into db with loaddata command.

But, if you have made any critical change you might get the IntegrityError . To fix this issue you have to make sure to backup the database by excluding contenttypes and auth.permissions tables by running this command when dumping data:

./manage.py dumpdata --exclude auth.permission --exclude contenttypes > db.json

After that you can safely run loaddata command with a fresh database.

./manage.py loaddata db.json

Here you can find Django documentation on dumpdata command .