问题
One line description of the issue
Whenever my django app deployed on heroku tries to access my MongoDB Atlas cluster to submit a form or check an admin login it throws something like the attached error.
Extra Details
Error reproducible on heroku build here
I think that this is error has to do with how heroku interacts with my MongoDB Atlas cluster, as I am able to get the app to successfully read and make modifications do different records in my database when I run the build locally.
I have enabled traffic from all IP addresses to my Atlas cluster, removed the default Heroku PostrgreSQL database from my Heroku app and the config variables, and stored my own database IP as a config var.
Any help would be greatly appreciated.
Python script
# Model Script
from django.db import models
class RawRequest(models.Model):
content = models.CharField(max_length=130)
identifier = models.CharField(max_length=30)
# Views Script
from django.shortcuts import render
from django.shortcuts import redirect
from django.urls import reverse
from django.http import HttpResponse
from django.views.generic import CreateView
from .models import RawRequest
# Create your views here.
def index(request):
return HttpResponse("euler-calc terminal GUI")
def potato(request):
return HttpResponse("potato")
class RequestView(CreateView):
model = RawRequest
fields = ('content', 'identifier')
def get_success_url(self):
return reverse('potato')
"""
Django settings for eulercalc project.
Generated by 'django-admin startproject' using Django 3.0.5.
For more information on this file, see
https://docs.djangoproject.com/en/3.0/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.0/ref/settings/
"""
import os
import django_heroku
# 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/3.0/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = # a secret
# SECURITY WARNING: don't run with debug turned on in production!
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',
'crispy_forms',
'terminal',
]
CRISPY_TEMPLATE_PACK = 'bootstrap4'
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 = 'eulercalc.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 = 'eulercalc.wsgi.application'
# Database
# https://docs.djangoproject.com/en/3.0/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'djongo',
'NAME': 'euler-calc',
'CLIENT': {
'host': str(os.environ.get('MONGODB_URL')),
'authMechanism': 'SCRAM-SHA-1'
}
}
}
# Password validation
# https://docs.djangoproject.com/en/3.0/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/3.0/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/3.0/howto/static-files/
STATIC_URL = '/static/'
# Activate Django-Heroku.
django_heroku.settings(locals())
Traceback
Environment:
Request Method: POST
Request URL: https://euler-calc.herokuapp.com/
Django Version: 2.2.12
Python Version: 3.6.10
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'crispy_forms',
'terminal']
Installed Middleware:
('whitenoise.middleware.WhiteNoiseMiddleware',
'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')
Traceback:
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/sql2mongo/query.py" in parse
842. return handler(self, statement)
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/sql2mongo/query.py" in _insert
907. query = InsertQuery(self, self.db, self.connection_properties, sm, self._params)
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/sql2mongo/query.py" in __init__
339. super().__init__(*args)
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/sql2mongo/query.py" in __init__
61. self.parse()
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/sql2mongo/query.py" in parse
409. self._fill_values(statement)
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/sql2mongo/query.py" in _fill_values
367. raise SQLDecodeError
The above exception () was the direct cause of the following exception:
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/cursor.py" in execute
56. params)
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/sql2mongo/query.py" in __init__
769. self._query = self.parse()
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/sql2mongo/query.py" in parse
864. raise exe from e
The above exception (FAILED SQL: INSERT INTO "terminal_rawrequest" ("content", "identifier") VALUES (%(0)s, %(1)s)
Params: ['2 + 2', 'heroku']
Version: 1.3.2) was the direct cause of the following exception:
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute
84. return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/cursor.py" in execute
59. raise db_exe from e
The above exception () was the direct cause of the following exception:
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
34. response = get_response(request)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
115. response = self.process_exception_by_middleware(e, request)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
113. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/views/generic/base.py" in view
71. return self.dispatch(request, *args, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/views/generic/base.py" in dispatch
97. return handler(request, *args, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/views/generic/edit.py" in post
172. return super().post(request, *args, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/views/generic/edit.py" in post
142. return self.form_valid(form)
File "/app/.heroku/python/lib/python3.6/site-packages/django/views/generic/edit.py" in form_valid
125. self.object = form.save()
File "/app/.heroku/python/lib/python3.6/site-packages/django/forms/models.py" in save
458. self.instance.save()
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py" in save
741. force_update=force_update, update_fields=update_fields)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py" in save_base
779. force_update, using, update_fields,
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py" in _save_table
870. result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py" in _do_insert
908. using=using, raw=raw)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/manager.py" in manager_method
82. return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/query.py" in _insert
1186. return query.get_compiler(using=using).execute_sql(return_id)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in execute_sql
1375. cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in execute
99. return super().execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in execute
67. return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute_with_wrappers
76. return executor(sql, params, many, context)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute
84. return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/utils.py" in __exit__
89. raise dj_exc_value.with_traceback(traceback) from exc_value
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute
84. return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/djongo/cursor.py" in execute
59. raise db_exe from e
Exception Type: DatabaseError at /
Exception Value:
回答1:
As it turns out, I forgot to add sqlparse to my requirements.txt and, therefore, heroku was unable to run Djongo's parsing of SQL into noSQL. Based on this issue it seems like version 0.2.4 is the most stable version to use.
requirements.txt
django==2.2.12
djongo==1.3.2
gunicorn==19.9.0
django-heroku==0.3.1
django-crispy-forms==1.9.0
dnspython==1.16.0
sqlparse==0.2.4
来源：https://stackoverflow.com/questions/61544561/django-heroku-mongodb-atlas-djongo-databaseerror-with-no-exception