基于 django 的应用程序中的迁移错误

Question

我在 django 和 python 版本中安装了升级的现有应用程序。升级 - Django2.2.3 & python3.7

追溯错误-

Traceback (most recent call last):
File "manage.py", line 11, in <module>
execute_from_command_line(sys.argv)
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/core/management/__init__.py", line 375, in 
execute self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/core/management/base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/core/management/base.py", line 364, in execute
output = self.handle(*args, **options)
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/core/management/base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/core/management/commands/makemigrations.py", line 87, in handle
loader = MigrationLoader(None, ignore_no_migrations=True)
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/db/migrations/loader.py", line 49, in __init__
self.build_graph()
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/db/migrations/loader.py", line 274, in build_graph
raise exc
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/db/migrations/loader.py", line 248, in build_graph
self.graph.validate_consistency()
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/db/migrations/graph.py", line 195, in validate_consistency
[n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/db/migrations/graph.py", line 195, in <listcomp>
[n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
File "/home/gaurav/Desktop/clk Update As of Sept 26/HOTFIX Update-1/clk/tenenv/lib/python3.6/site-packages/django/db/migrations/graph.py", line 58, in raise_error
raise NodeNotFoundError(self.error_message, self.key, origin=self.origin)
django.db.migrations.exceptions.NodeNotFoundError: Migration main.0031_auto_20190716_1425 dependencies reference nonexistent parent node ('query_store', '0040_auto_20190624_1542')

Answer 1

检查您所有的迁移文件是否正确无误。您的回溯错误是说在您的主应用程序中 0031_auto_20190716_1425 迁移文件依赖于 query_store 应用程序的迁移文件 0040_auto_20190624_1542。

这个错误有两种解决方法：

如果迁移文件丢失，则需要手动重新创建迁移文件。

注意：以下解决方案只有在您可以通过删除旧的 schema.This 重新创建数据库架构时才有效。

您可以删除所有迁移文件和运行命令“./manage.py makemigrations”创建迁移文件和“./manage.py migrate”在您的数据库上应用迁移。

基于 django 的应用程序中的迁移错误

Migration Error in django based application

postgresql

python-3.6

django-2.2