Question

尝试各种迁移后，即时通讯仍然收到此错误我只会在尝试保存新对象时收到此错误

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\base.py", line 741, in save
    force_update=force_update, update_fields=update_fields)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\base.py", line 779, in save_base
    force_update, using, update_fields,
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\base.py", line 870, in _save_table
    result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\base.py", line 908, in _do_insert
    using=using, raw=raw)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\query.py", line 1186, in _insert
    return query.get_compiler(using=using).execute_sql(return_id)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\sql\compiler.py", line 1332, in execute_sql
    cursor.execute(sql, params)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\utils.py", line 99, in execute
    return super().execute(sql, params)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\utils.py", line 67, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\utils.py", line 76, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\utils.py", line 89, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
  File "C:\Users\Carlos\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\sqlite3\base.py", line 383, in execute
    return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: desporto_noticia

模型

import datetime

from django.db import models
from django.utils import timezone



class Noticia(models.Model):
    noticia_texto = models.TextField()
    noticia_imagem_path = models.CharField(max_length=100)
    noticia_titulo = models.CharField(max_length=100, default='Default')
    pub_data = models.DateTimeField('data de publicacao')
    noticia_tema = models.CharField(max_length=100)

    def __str__(self):
        return self.noticia_texto

class Comentario(models.Model):
    noticia = models.ForeignKey(Noticia, on_delete=models.CASCADE)
    comentario_texto = models.CharField(max_length=300)

    def __str__(self):
        return self.comentario_texto

在我的数据库软件上找到这是唯一不存在的表，另一个模型有一个表尝试了所有迁移，例如：

python manage.py makemigrations desporto
python manage.py sqlmigrate desporto 0001
python manage.py migrate
python manage.py migrate --run-syncdb

Answer 1

您对Noticia模型的迁移已记录在django迁移表中，但已从数据库中删除。如果不是正式产品，则可以对数据库进行dorp处理，然后使用新的数据库架构重新运行迁移。如果您不想删除数据库，则可以从迁移表中删除迁移条目，然后重新运行migration命令。

通知：请不要在生产数据库中进行实验。

Django迁移后没有这样的表

1 个答案: