python - Django 删除了 DDBB 表,不能再迁移:没有这样的表错误
问题描述
我从 sqlite DDBB 中删除了一个表,因为我想进行一些更改,但无法通过简单更新 Django 中的模型来完成这些更改。从那以后,我无法再次执行迁移并为我的模型获取新表,出现错误“django.db.utils.OperationalError: no such table: shop_productitem”。
我试图在其他类似线程中遵循许多提示,但没有运气。例如,我已经尝试过这个和这个,但我无法解决这个问题。我的理解是,如果我运行 makemigrations 然后迁移模型,ddbb 应该使用新规范进行自我更新,但在这种特定情况下我可能弄错了。
有人可以告诉我问题出在哪里吗?我担心我没有必要的知识来解决我自己的问题,我一直在寻找年龄。
请在下面找到我收到的整个错误消息:
Applying shop.0002_auto_20200218_1958...Traceback (most recent call last):
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 303, in execute
return Database.Cursor.execute(self, query, params)
sqlite3.OperationalError: no such table: shop_productitem
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
utility.execute()
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/__init__.py", line 365, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/base.py", line 288, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/base.py", line 335, in execute
output = self.handle(*args, **options)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 200, in handle
fake_initial=fake_initial,
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/migrations/executor.py", line 117, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/migrations/migration.py", line 122, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/migrations/operations/fields.py", line 216, in database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 133, in alter_field
super().alter_field(model, old_field, new_field, strict=strict)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 509, in alter_field
old_db_params, new_db_params, strict)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 330, in _alter_fi
eld
self._remake_table(model, alter_field=(old_field, new_field))
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 260, in _remake_t
able
disable_constraints=False,
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 95, in alter_db_t
able
super().alter_db_table(model, old_db_table, new_db_table)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 383, in alter_db_tab
le
"new_table": self.quote_name(new_db_table),
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 117, in execute
cursor.execute(sql, params)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 100, in execute
return super().execute(sql, params)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 68, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrapp
ers
return executor(sql, params, many, context)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 303, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: shop_productitem
非常感谢,歪
解决方案
您是否尝试过从迁移文件夹中删除每个迁移(除了 init 之外的所有迁移),然后运行makemigrations和migrate?
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