6

嗨,我正在做 djangogirls 教程,遇到了 OperationalError no such table: blog_post。这在我的虚拟环境中非常有效,但是在推送到 heroku 后我得到了 OperationalError。

我正在使用 Django 1.7.7。有关该错误的更多信息,请访问:https ://girlsblog.herokuapp.com/

python manage.py makemigrations python manage.py migrate 最初是在教程开始时完成的。然后我尝试再次执行此操作,并且“未检测到更改”和“无需迁移”

这是我的 post_list.html

{% extends 'blog/base.html' %}

{% block content %}
    {% for post in posts %}
        <div class="post">
            <div class="date">
                {{ post.published.date }}
            </div>
            <h1><a href="{% url 'blog.views.post_detail' pk=post.pk %}">{{ post.title }}</a></h1>
            <p> {{ post.text|linebreaks }}</p>
        </div>
    {% endfor %}
{% endblock content %}

这是我的 .gitignore

myvenv
__pycache__
staticfiles
local_settings.py
db.sqlite3

模型.py

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

# Create your models here.

class Post(models.Model):
    author = models.ForeignKey('auth.User')
    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

设置.py

"""
Django settings for mysite project.

For more information on this file, see
https://docs.djangoproject.com/en/1.7/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.7/ref/settings/
"""

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


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.7/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '1l8)#&q8r_wwev1r9mm8q5ezz8p#)rvg(l4%(t^-t8s4bva2+r'

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

TEMPLATE_DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'blog',
)

MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
)

ROOT_URLCONF = 'mysite.urls'

WSGI_APPLICATION = 'mysite.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.7/ref/settings/#databases

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

# Internationalization
# https://docs.djangoproject.com/en/1.7/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'America/Chicago'

USE_I18N = True

USE_L10N = True

USE_TZ = False


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.7/howto/static-files/

STATIC_URL = '/static/'

import dj_database_url
DATABASES['default'] = dj_database_url.config()

SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

ALLOWED_HOSTS = ['*']

STATIC_ROOT = 'staticfiles'

DEBUG = False

try:
    from .local_settings import *
except ImportError:
    pass

STATICFILES_DIRS = (
    os.path.join(BASE_DIR, "static"),
)

博客/views.py

from django.shortcuts import render, get_object_or_404
from django.utils import timezone
from .models import Post
from .forms import PostForm

# Create your views here.

def post_list(request):
    posts = Post.objects.filter(published_date__lte=timezone.now()).order_by('published_date')
    return render(request, 'blog/post_list.html', {'posts': posts})

def post_detail(request, pk):
    post = get_object_or_404(Post, pk=pk)
    return render(request, 'blog/post_detail.html', {'post': post})

def post_new(request):
    form = PostForm()
    return render(request, 'blog/post_edit.html', {'form': form})

我对此真的很陌生,所以请原谅“简单”的错误。

4

6 回答 6

7

旧帖子,但似乎没有得到回答,所以我会试一试。在遇到类似问题后,我通过谷歌被带到这里。

这个问题可能是 heroku 方面缺少的数据库。如果您通过 git 推送,并且 db.sqlite3 在您的 .gitignore 中,那么它肯定会在那里丢失,并且需要在那里创建。这正是我在摆弄预制示例(尚未创建数据库的地方)时遇到的问题。

$ python manage.py migrate

在您的 heroku 环境中应该修复它。

于 2015-08-19T05:53:57.053 回答
1

我遇到了同样的问题,并在reddit上找到了解决方案。利用

git add -f db.sqlite3

然后提交、推送,最后拉上 pythonanywhere.com。

致 reddit 用户 elbuckez 和牛仔裤_and_a_t-shirt

于 2017-08-29T21:23:48.087 回答
1

我做了两件事来解决这个问题:

  1. 正如上面的大卫纽金特python3 manage.py migrate所说,输入服务器控制台。
  2. 在 .gitignore 文件中,我不得不注释掉db.sqlite3. 然后我提交并推送了这个更改,然后回到我的服务器(在我的情况下是 pythonanywhere,而不是 heroku)并做了git pull.
于 2020-06-27T15:07:56.863 回答
1

这是因为在 Heroku 上你很可能已经安装了 postgresql 后端,而不是 sqlite。您需要配置您的生产部署以正确使用 postgresql ......我会给出说明,但我现在必须弄清楚......

于 2016-09-03T00:45:36.337 回答
0

python manage.py migrate --run-syncdb在这些命令之后运行此命令

  1. python manage.py migrate
  2. python manage.py makemigrations
于 2020-11-19T17:45:55.387 回答
-1

在你的 models.py 中包含这个语句:

from django.contrib.auth.models import User
于 2015-05-19T18:38:49.923 回答