django博客错误在部署到heroku时不断发生

Question

< 部署到Heroku后尝试打开博客页面时出现以下错误。它在cloud9中工作正常，但是一旦我部署它就会抛出错误。该网站的所有其他页面都可以正常工作。有人可以帮我吗？

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Blog models.py file

from django.db import models
from django.utils import timezone
from django.urls import reverse
from django.conf import settings
from django.contrib.auth.models import User
from django.db.models.signals import pre_save
from django.utils.text import slugify
import datetime

class Post(models.Model):
    author = models.ForeignKey('auth.User', on_delete=models.CASCADE, related_name='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)
    image = models.ImageField(upload_to='images', default='Upload Picture')
    category = models.CharField(max_length=200)
    description = models.CharField(max_length=340)
    views = models.IntegerField(default=0)
    likes = models.ManyToManyField(settings.AUTH_USER_MODEL, related_name='post_likes', blank=True)

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

    def approve_comments(self):
        return self.comments.filter(approved_comment=True)

    def get_absolute_url(self):
        return reverse('post_detail', kwargs={"slug": self.slug})

    def get_like_url(self):
        return reverse('like', kwargs={"slug": self.slug})


    def __str__(self):
        return self.title



class Comment(models.Model):
    post = models.ForeignKey('blog.Post', on_delete=models.CASCADE, related_name='comments')
    author = models.CharField(max_length=200)
    text = models.TextField()
    created_date = models.DateTimeField(default=timezone.now)
    approved_comment = models.BooleanField(default=False)

    def approve(self):
        self.approved_comment = True
        self.save()

    def get_absolute_url(self):
        return reverse("post_list")

    def __str__(self):
        return self.text

settings.py文件中的数据库

！-开始代码段：js隐藏：虚假控制台：真babel：假->

# Database
# https://docs.djangoproject.com/en/1.11/ref/settings/#databases

if 'DATABASE_URL' in os.environ:
    DATABASES = {
        'default': dj_database_url.parse(os.environ.get('DATABASE_URL'))
    }
else:
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
        }
    }

Answer 1

我解决了这个问题。 heroku中的postgres密钥与我在本地输入的密钥不同。我在本地更新，现在可以使用了。谢谢大家的时间，帮助和耐心。