Question

我正在尝试在服务器上部署本地工作，但是当我在python manage.py上运行迁移时，我遇到了psycopg2的问题。

设定：

    DATABASES = {
    'default':{
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': '******',
        'USER': '*****',
        'PASSWORD': '**********',
        'HOST': '*******',
        'PORT': '5432'
    }
}

有问题的模特

class user(AbstractBaseUser, PermissionsMixin):
   created = models.DateTimeField(auto_now_add=True)
   first_name = models.CharField(max_length=50)
   last_name = models.CharField(max_length=50)
   email = models.EmailField(unique=True)
   street = models.CharField(max_length=100, null=True, blank=True)
   street_num = models.CharField(max_length=10, null=True, blank=True)
   unit_num = models.CharField(max_length=10, null=True, blank=True)
   city = models.CharField(max_length=50, null=True, blank=True)
   postal_code = models.CharField(max_length=10, null=True, blank=True)
   state = models.ForeignKey(state, null=True, blank=True)
   country = models.ForeignKey(country, null=True, blank=True)
   phone = models.CharField(max_length=50, null=True, blank=True)

   is_staff = models.BooleanField(default=False)
   is_active = models.BooleanField(default=True)
   .....

class country(models.Model):
    name = models.CharField(max_length=50)
    code = models.CharField(max_length=10)


class State(models.Model):
    country = models.ForeignKey(country, on_delete=models.CASCADE)
    name = models.CharField(max_length=50)
    short_name = models.CharField(max_length=3)
    group = models.CharField(max_length=2, null=True, blank=True, choices=GROUP_TYPE)
    properties = models.ForeignKey(stateProperties, null=True, blank=True)

迁移文件： ...

            ('brand', models.CharField(blank=True, max_length=30, null=True)),
            ('exp_month', models.CharField(blank=True, max_length=2, null=True)),
            ('exp_year', models.CharField(blank=True, max_length=2, null=True)),
            ('country', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='common.country')),
            ('groups', models.ManyToManyField(blank=True, help_text='The groups this user belongs to. A user will get all permissions granted to each of their groups.', related_name='user_set', related_query_name='user', to='auth.Group', verbose_name='groups')),
            ('state', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='common.state')),

.....

ERROR:
Running migrations:
  Applying contenttypes.0001_initial... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying auth.0001_initial... OK
  Applying auth.0002_alter_permission_name_max_length... OK
  Applying auth.0003_alter_user_email_max_length... OK
  Applying auth.0004_alter_user_username_opts... OK
  Applying auth.0005_alter_user_last_login_null... OK
  Applying auth.0006_require_contenttypes_0002... OK
  Applying auth.0007_alter_validators_add_error_messages... OK
  Applying auth.0008_alter_user_username_max_length... OK
  Applying profile.0001_initial...Traceback (most recent call last):
  File "/home/instantuser/app/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: relation "common_country" does not exist


**django.db.utils.ProgrammingError: relation "common_country" does not exist**

我在这里缺少什么？

Answer 1

我发现了问题。这是我的错。我有一个.gitignore设置为忽略迁移文件和文件夹。因此，Country所在的迁移文件夹未发送到主分支。

固定。请求帮助。

Answer 2

替换它：

country = models.ForeignKey(country, null=True, blank=True)

使用：

country = models.ForeignKey(Country, null=True, blank=True)

那应该这样做，我相信。

Answer 3

评论国家/地区模型并运行

python manage.py makemigrations app_name

取消注释国家/地区模型并运行相同的上述命令（国家模型将正确重新创建）
最后使用migrate：

python manage.py migrate

迁移时出错 - psycopg2 Django

3 个答案: