Python 修复Django1.9中检测到的冲突迁移
我更新了存储库以支持Django 1.9。我得到了这个错误:Python 修复Django1.9中检测到的冲突迁移,python,django,django-models,django-migrations,Python,Django,Django Models,Django Migrations,我更新了存储库以支持Django 1.9。我得到了这个错误: CommandError: Conflicting migrations detected; multiple leaf nodes in the migration graph: (0001_initial, 0002_auto__add_field_dynamicschemafield_extra in dynamicmodel). To fix them run 'python manage.py makemigration
CommandError:
Conflicting migrations detected; multiple leaf nodes in the migration
graph: (0001_initial, 0002_auto__add_field_dynamicschemafield_extra in
dynamicmodel).
To fix them run 'python manage.py makemigrations --merge'
运行python manage.py makemigrations--merge
后,我遇到了另一个错误:
File "/local/lib/python2.7/sitepackages/django/core/management/__init__.py",
line 353, in execute_from_command_line
utility.execute()
File "/local/lib/python2.7/sitepackages/django/core/management/__init__.py", line 345, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File
"/local/lib/python2.7/site-packages/django/core/management/base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File
"/local/lib/python2.7/site-packages/django/core/management/base.py", line 399, in execute
output = self.handle(*args, **options)
File
"/local/lib/python2.7/site-packages/django/core/management/commands/makemigrations.py", line 97, in handle
return self.handle_merge(loader, conflicts)
File
"/local/lib/python2.7/site-packages/django/core/management/commands/makemigrations.py", line 216, in handle_merge
raise ValueError("Could not find common ancestor of %s" % migration_names)
ValueError: Could not find common ancestor of set([u'0001_initial', u'0002_auto__add_field_dynamicschemafield_extra']).
帮我找到解决方案。似乎您已经注入了其他应用程序的模型
在迁移中定义目标应用程序,似乎迁移加载器无法正确识别目标应用程序。迁移需要有“直”依赖链,即迁移0003需要依赖于迁移0002,而0002依赖于迁移0001 您需要在0003_third.py中这样定义:
class Migration(migrations.Migration):
dependencies = [
('modulename', '0002_second'),
]
什么是目标应用程序?我在Django 1.8上,尝试在
--merge
之后显式地给出应用程序名称,但这没有帮助。我看到,TARGET\u app
是迁移文件中的一个变量,而不是迁移脚本的参数