django迁移model到别的app中
2019-03-04 17:04 cmsd 阅读(1094) 评论(0) 编辑 收藏 举报举例: 移动 users.AccessKey 到 authentication.AccessKey中
1. 移动models到新的app中
$ mv users/models/access_key.py authentication/models/
2. 原来app中添加migrations
$ python manage.py makemigrations --empty users $ vim users/migrations/0019_auto_20190304_1459.py from django.db import migrations class Migration(migrations.Migration): dependencies = [ ('users', '0018_auto_20190107_1912'), ] # 重命名表 database_operations = [ migrations.AlterModelTable(name='accesskey', table='authentication_accesskey'), ] # 声明已删除了表 state_operations = [ migrations.DeleteModel('accesskey'), ] operations = [ migrations.SeparateDatabaseAndState( database_operations=database_operations, state_operations=state_operations) ]
3. 新的app生成 migrations,编辑生成的migrations文件
$ python manage.py makemigrations authentication $ vim authentication/migrations/0001_initial.py # Generated by Django 2.1.7 on 2019-02-28 08:07 from django.conf import settings from django.db import migrations, models import django.db.models.deletion import uuid class Migration(migrations.Migration): initial = True dependencies = [ migrations.swappable_dependency(settings.AUTH_USER_MODEL), ('users', '0019_auto_20190304_1459'), ] state_operations = [ migrations.CreateModel( name='AccessKey', fields=[ ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False, verbose_name='AccessKeyID')), ('secret', models.UUIDField(default=uuid.uuid4, editable=False, verbose_name='AccessKeySecret')), ('user', models.ForeignKey( on_delete=django.db.models.deletion.CASCADE, related_name='access_keys', to=settings.AUTH_USER_MODEL, verbose_name='User')), ], ), ] operations = [ migrations.SeparateDatabaseAndState(state_operations=state_operations) ]
4. 完成,可以正常执行migrations等操作了,数据不会丢失
更多见:https://stackoverflow.com/questions/25648393/how-to-move-a-model-between-two-django-apps-django-1-7