Question

我的代码如下所示：

class X(models.Model):

    class Meta:
        db_table = 'X'

    ph_no = models.CharField(max_length =255,null=False)

    y = models.ForeignKey('y',on_delete=models.CASCADE)


class M(models.Model):

    class Meta:
        db_table = 'M'

    comment = models.CharField(max_length=255,null= False)

    x = models.ForeignKey('X',on_delete=models.CASCADE)



class y (models.Model):

    class Meta:
        db_table = 'y'

    details =  models.TextField(null= False)

现在，使用此架构运行迁移时，我收到以下错误

appName.M.x: (fields.E300) Field defines a relation with model 'X', which is either not installed, or is abstract.
appName.M.x: (fields.E307) The field appName.M.x was declared with a lazy reference to 'appName.X', but app 'appName' doesn't provide model 'X'.

我的settings.py文件如下：

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
    'rest_framework.authtoken',
    'dashboard'
]

Answer 1

已安装的应用

INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'rest_framework',
'rest_framework.authtoken',

*'dashboard'*

with 
'dashboard.apps.DashboardConfig'
]

仪表板应用程序中的

和apps.py

   from django.apps import AppConfig

class DashboardConfig（AppConfig）： name ='dashboard'

Django Field定义了与模型的关系，该模型要么未安装，要么是抽象的

1 个答案: