Question

我创建了一个简单的django Web应用程序。当我运行models.py文件时，我收到以下错误。我已经尝试了很多解决方案，包括逐个取出我的应用程序，重新安装django（我有2.0版）进行系统重启，插入import django + django.setup（），刷新virtualenv 。

Traceback (most recent call last):
File "C:/Users/Pritee/djangogirls/blog/models.py", line 6, in <module>
class Post(models.Model):
File "C:\Users\Pritee\djangogirls\myvenv\lib\site-
packages\django\db\models\base.py", line 100, in __new__
app_config = apps.get_containing_app_config(module)
File "C:\Users\Pritee\djangogirls\myvenv\lib\site-
packages\django\apps\registry.py", line 244, in get_containing_app_config
self.check_apps_ready()
File "C:\Users\Pritee\djangogirls\myvenv\lib\site-
packages\django\apps\registry.py", line 127, in check_apps_ready
raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

Models.py

from django.db import models

from django.utils import timezone


class Post(models.Model):
    author = models.ForeignKey('auth.User',on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    text = models.TextField()
    created_date = models.DateTimeField(
            default=timezone.now)
published_date = models.DateTimeField(
        blank=True, null=True)

def publish(self):
    self.published_date = timezone.now()
    self.save()

def __str__(self):
    return self.title

Settings.py

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/2.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'iua)_567ww!*c9#dhg#f&u4ft$(47!cz@98!$ro=^+u!+t'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = ['127.0.0.1']


# Application definition

INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'blog'
]

MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'mysite.urls'

TEMPLATES = [
{
    'BACKEND': 'django.template.backends.django.DjangoTemplates',
    'DIRS': [],
    'APP_DIRS': True,
    'OPTIONS': {
        'context_processors': [
            'django.template.context_processors.debug',
            'django.template.context_processors.request',
            'django.contrib.auth.context_processors.auth',
            'django.contrib.messages.context_processors.messages',
        ],
    },
},
]

WSGI_APPLICATION = 'mysite.wsgi.application'


# Database
# https://docs.djangoproject.com/en/2.0/ref/settings/#databases

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.sqlite3',
    'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}


# Password validation
# https://docs.djangoproject.com/en/2.0/ref/settings/#auth-password-
validators

AUTH_PASSWORD_VALIDATORS = [
{
    'NAME': 
'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
    'NAME': 
'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
    'NAME': 
'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
    'NAME': 
'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]


# Internationalization
# https://docs.djangoproject.com/en/2.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.0/howto/static-files/

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'static')

command prompt错误跟踪图片

我的回购邮件是here :(因为我从头开始尝试重新编写教程，看看是否可以修复它，所以命名略有不同）

Answer 1

我认为你在课程第6行有一个缩进错误。只需在发布日期之前使用标签。

在models.py

中试试

class Post(models.Model):
    author = models.ForeignKey('auth.User',on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    text = models.TextField()
    created_date = models.DateTimeField(default=timezone.now)
    published_date = models.DateTimeField(blank=True, null=True)

超级简单的教程投掷django.core.exceptions.AppRegistryNotReady：应用程序还没有加载

1 个答案: