django 1.11 - OperationalErrorそのような列はありません

Question

私はpy manage.py makemigrationsを試してからpy manage.py migrateを試みましたが、私のモデルに新しいフィールドを追加するとこのエラーが発生します。私はまた、すべての移行を削除してmakemigrationsをやってみて、もう一度移行しようとしましたが、それでも問題は解決しません。

基本的に私がモデルScheduleを持っていると私は関係がcustomer = models.ForeignKey(Customer)

EDITであることにCustomerフィールドを追加しました：ここに私のモデルがある

class Schedule(models.Model): 

    name = models.CharField(max_length=250) 
    deadline_date = models.DateField() 
    is_completed = models.BooleanField(default=False) 
    description = models.CharField(max_length=1000, default="") 
    customer = models.ForeignKey(Customer) 

編集：ここでは、移行

class Migration(migrations.Migration): 

    initial = True 

    dependencies = [ 
     ('core', '0007_customer'), 
    ] 

    operations = [ 
     migrations.CreateModel(
      name='Schedule', 
      fields=[ 
       ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), 
       ('name', models.CharField(max_length=250)), 
       ('deadline_date', models.DateField()), 
       ('deadline_time', models.TimeField()), 
       ('is_completed', models.BooleanField(default=False)), 
       ('description', models.CharField(default='', max_length=1000)), 
       ('responsible_department', models.CharField(choices=[('Inventory', 'Inventory'), ('Sales', 'Sales'), ('Procurement', 'Procurement'), ('Accounting', 'Accounting'), ('Technical', 'Technical'), ('Admin', 'Admin')], default='Sales', max_length=30)), 
       ('customer', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='core.Customer')), 
      ], 
     ), 
    ] 

があります

トレースバックは次のとおりです。

Traceback: 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\backends\utils.py" in execute 
    65.     return self.cursor.execute(sql, params) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\backends\sqlite3\base.py" in execute 
    328.   return Database.Cursor.execute(self, query, params) 

The above exception (no such column: schedule_schedule.customer_id) was the direct cause of the following exception: 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\core\handlers\exception.py" in inner 
    41.    response = get_response(request) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\core\handlers\base.py" in _get_response 
    187.     response = self.process_exception_by_middleware(e, request) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\core\handlers\base.py" in _get_response 
    185.     response = wrapped_callback(request, *callback_args, **callback_kwargs) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\contrib\admin\options.py" in wrapper 
    551.     return self.admin_site.admin_view(view)(*args, **kwargs) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\utils\decorators.py" in _wrapped_view 
    149.      response = view_func(request, *args, **kwargs) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\views\decorators\cache.py" in _wrapped_view_func 
    57.   response = view_func(request, *args, **kwargs) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\contrib\admin\sites.py" in inner 
    224.    return view(request, *args, **kwargs) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\utils\decorators.py" in _wrapper 
    67.    return bound_func(*args, **kwargs) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\utils\decorators.py" in _wrapped_view 
    149.      response = view_func(request, *args, **kwargs) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\utils\decorators.py" in bound_func 
    63.     return func.__get__(self, type(self))(*args2, **kwargs2) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\contrib\admin\options.py" in changelist_view 
    1662.    selection_note=_('0 of %(cnt)s selected') % {'cnt': len(cl.result_list)}, 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\models\query.py" in __len__ 
    232.   self._fetch_all() 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\models\query.py" in _fetch_all 
    1118.    self._result_cache = list(self._iterable_class(self)) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\models\query.py" in __iter__ 
    53.   results = compiler.execute_sql(chunked_fetch=self.chunked_fetch) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\models\sql\compiler.py" in execute_sql 
    894.    raise original_exception 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\models\sql\compiler.py" in execute_sql 
    884.    cursor.execute(sql, params) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\backends\utils.py" in execute 
    80.    return super(CursorDebugWrapper, self).execute(sql, params) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\backends\utils.py" in execute 
    65.     return self.cursor.execute(sql, params) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\utils.py" in __exit__ 
    94.     six.reraise(dj_exc_type, dj_exc_value, traceback) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\utils\six.py" in reraise 
    685.    raise value.with_traceback(tb) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\backends\utils.py" in execute 
    65.     return self.cursor.execute(sql, params) 

File "C:\Program Files (x86)\Python36-32\lib\site-packages\django-1.11.4-py3.6.egg\django\db\backends\sqlite3\base.py" in execute 
    328.   return Database.Cursor.execute(self, query, params) 

Exception Type: OperationalError at /admin/schedule/schedule/ 
Exception Value: no such column: schedule_schedule.customer_id 

Answer 1

すべての移行を削除してmakemigrationsを再実行した場合、移行とデータベースは同期しなくなります。

最も簡単な修正点は、データベースを削除してmigrateを再度実行することです。重要なデータがあり、データベースを削除できない場合は、データベースと移行を同期させるのが難しい場合があります。手動でcustomer_id列を作成し、その他の変更を加える必要があります。