Question

我已经从sqllite3 shell中删除了一个表，然后当我尝试通过运行python manage.py来再次创建它时，不会创建manage.py，未创建makemigrations表并显示以下错误。如何重新创建表并使我的数据库和API是不同步的。我尝试使用python manage.py dbsync但是没有用。

Operations to perform:
  Apply all migrations: admin, auth, cgkapp, contenttypes, sessions
Running migrations:
  Applying cgkapp.0002_delete_questions...Traceback (most recent call last):
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/home/shrivatsa555/.virtualenvs/django20/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: cgkapp_questions

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
    utility.execute()
  File "/home/shrivatsa555/.virtualenvs/django20/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/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/core/management/base.py", line 335, in execute
    output = self.handle(*args, **options)
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 200, in handle
    fake_initial=fake_initial,
  File "/home/shrivatsa555/.virtualenvs/django20/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/shrivatsa555/.virtualenvs/django20/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/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/home/shrivatsa555/.virtualenvs/django20/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/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/migrations/operations/models.py", line 246, in database_forwa
rds
    schema_editor.delete_model(model)
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 287, in delete_model
    super().delete_model(model)
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 317, in delete_model
    "table": self.quote_name(model._meta.db_table),
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 117, in execute
    cursor.execute(sql, params)
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/backends/utils.py", line 100, in execute
    return super().execute(sql, params)
  File "/home/shrivatsa555/.virtualenvs/django20/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/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "/home/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/home/shrivatsa555/.virtualenvs/django20/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/shrivatsa555/.virtualenvs/django20/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/home/shrivatsa555/.virtualenvs/django20/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: cgkapp_questions

Answer 1

Django migrate命令尝试进行尚未完成的所有迁移（它们保存在迁移目录中）。

在这里你有＆＃34; 0002_delete_questions＆＃34;迁移文件位于迁移目录中，当您运行migrate命令时，此迁移会尝试从数据库中删除问题表，但此表已被删除。所以你可以用两种方式处理这个问题

从项目的迁移目录中删除此迁移文件
运行此命令python manage.py migrate --fake cgkapp 0002_delete_questions（此处＆＃39; cgkapp＆＃39;是您的应用名称＆＃39; 0002_delete_questions＆＃39;是您的迁移文件名称）

Sqllite和Django shell不同步

1 个答案: