AttributeError: module 'django.db.models' has no attribute 'JSONField' - azure

Question

Following Django 3.1 guidelines for JSONField for all supported database backends…
https://docs.djangoproject.com/en/3.1/releases/3.1/#jsonfield-for-all-supported-database-backends
WARNINGS:
users.Search.input: (fields.W904) django.contrib.postgres.fields.JSONField is deprecated. Support for it (except in historical migrations) will be removed in Django 4.0.
HINT: Use django.db.models.JSONField instead.
from django.db import models
class ContactInfo(models.Model):
data = models.JSONField()
… ends up with error on Azure Web App:
AttributeError: module 'django.db.models' has no attribute 'JSONField'
Requirements.txt file specifies Django >= 3.1:
Django >= 3.1
App Service Built console:
##[group]Run azure/appservice-build#v1
with:
platform: python
platform-version: 3.8
env:
pythonLocation: /opt/hostedtoolcache/Python/3.8.5/x64
...
No source directory was provided -- the root of the repository ('GITHUB_WORKSPACE' environment variable) will be built: '/github/workspace'
No output directory was provided
Platform provided: 'python'
Platform version provided: '3.8'
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 131 100 131 0 0 262 0 --:--:-- --:--:-- --:--:-- 262
100 131 100 131 0 0 262 0 --:--:-- --:--:-- --:--:-- 262
Running command 'oryx build /github/workspace --platform python --platform-version 3.8 --enable-dynamic-install'
Build orchestrated by Microsoft Oryx, https://github.com/Microsoft/Oryx
You can report issues at https://github.com/Microsoft/Oryx/issues
Oryx Version : 0.2.20200312.2, Commit: d1cf6b4a89345b6a7d0dc25d0fbd67860862ee18, ReleaseTagName: 20200312.2
Build Operation ID: |xt2zaWLFTwY=.5ad82150_
Repository Commit : 75be0048ee098cbf42a032200e6ef6867a48b924
Source directory : /github/workspace
Destination directory: /github/workspace
Python Version: /opt/python/3.8.2/bin/python3
Python Virtual Environment: pythonenv3.8
Creating virtual environment ...
Activating virtual environment ...
Upgrading pip...
WARNING: The directory '/github/home/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
WARNING: The directory '/github/home/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pip
Downloading https://files.pythonhosted.org/packages/4e/5f/528232275f6509b1fff703c9280e58951a81abe24640905de621c9f81839/pip-20.2.3-py2.py3-none-any.whl (1.5MB)
Installing collected packages: pip
Found existing installation: pip 19.2.3
Uninstalling pip-19.2.3:
Successfully uninstalled pip-19.2.3
Successfully installed pip-20.2.3
Done in 2 sec(s).
Running pip install...
Collecting Django>=3.1
Downloading Django-3.1.1-py3-none-any.whl (7.8 MB)
Collecting psycopg2-binary
Downloading psycopg2_binary-2.8.6-cp38-cp38-manylinux1_x86_64.whl (3.0 MB)
...
Building wheels for collected packages: isort
Building wheel for isort (PEP 517): started
Building wheel for isort (PEP 517): finished with status 'done'
Created wheel for isort: filename=isort-5.5.2-py3-none-any.whl size=96676 sha256=51272461d0c723dd22ff1a2f9eeb14b85dcb526eb89afaeaa56a444601358acd
Stored in directory: /tmp/pip-ephem-wheel-cache-2s_h_h49/wheels/1e/39/35/2df4c05d92066f85f187318ea94000afe7a684a28361f823cb
Successfully built isort
...
Successfully installed Django-3.1.1 PyJWT-1.7.1 apscheduler-3.6.3 asgiref-3.2.10 astroid-2.4.2 azure-common-1.1.25 azure-core-1.8.1 azure-identity-1.0.1 azure-keyvault-secrets-4.0.0 cachetools-4.1.1 certifi-2020.6.20 cffi-1.14.2 chardet-3.0.4 click-7.1.2 cryptography-3.1 defusedxml-0.6.0 diff-match-patch-20200713 django-apscheduler-0.3.0 django-braces-1.14.0 django-cas-ng-4.1.1 django-crispy-forms-1.9.2 django-debug-toolbar-2.2 django-import-export-2.3.0 django-money-1.1 django-pandas-0.6.2 et-xmlfile-1.0.1 google-api-core-1.22.2 google-auth-1.21.1 googleapis-common-protos-1.52.0 googletrans-3.0.0 h11-0.9.0 h2-3.2.0 hpack-3.0.0 hstspreload-2020.9.9 httpcore-0.9.1 httpx-0.13.3 hyperframe-5.2.0 idna-2.10 isodate-0.6.0 isort-5.5.2 jdcal-1.4.1 joblib-0.16.0 lazy-object-proxy-1.4.3 lxml-4.5.2 markuppy-1.14 mccabe-0.6.1 msal-1.5.0 msal-extensions-0.1.3 msrest-0.6.19 nltk-3.5 numpy-1.19.2 oauthlib-3.1.0 odfpy-1.4.1 opencensus-0.7.10 opencensus-context-0.1.1 opencensus-ext-azure-1.0.4 opencensus-ext-django-0.7.2 opencensus-ext-logging-0.1.0 opencensus-ext-postgresql-0.1.2 openpyxl-3.0.5 pandas-1.1.2 portalocker-1.7.1 protobuf-3.13.0 psutil-5.7.2 psycopg2-binary-2.8.6 py-moneyed-0.8.0 pyasn1-0.4.8 pyasn1-modules-0.2.8 pycparser-2.20 pylint-2.6.0 python-cas-1.5.0 python-dateutil-2.8.1 python-docx-0.8.10 pytz-2020.1 pyyaml-5.3.1 rake-nltk-1.0.4 regex-2020.7.14 requests-2.24.0 requests-oauthlib-1.3.0 rfc3986-1.4.0 rsa-4.6 scikit-learn-0.23.2 scipy-1.5.2 six-1.15.0 sniffio-1.1.0 sqlparse-0.3.1 tablib-2.0.0 threadpoolctl-2.1.0 toml-0.10.1 tqdm-4.49.0 tzlocal-2.1 urllib3-1.25.10 whitenoise-5.2.0 wrapt-1.12.1 xlrd-1.2.0 xlwt-1.3.0
Done running pip install.
Content in source directory is a Django app
Running collectstatic ...
248 static files copied to '/github/workspace/staticfiles', 614 post-processed.
'collectstatic' exited with exit code .
Done in 3 sec(s).
Removing existing manifest file
Creating a manifest file...
Manifest file created.
Done in 65 sec(s).
Oryx console:
INFO - Starting container for site
INFO - docker run -d -p 2747:8000 --name azapp-rio-analyse-k6xbl__6cdd_0_ee823bd7 -e WEBSITE_SITE_NAME=azapp-rio-analyse-k6xbl -e WEBSITE_AUTH_ENABLED=False -e WEBSITE_ROLE_INSTANCE_ID=0 -e WEBSITE_HOSTNAME=azapp-rio-analyse-k6xbl-dev.azurewebsites.net -e WEBSITE_INSTANCE_ID=945195e1f60010c33c817fd7ae1c28de08dc486224321f51d599531c29bb5725 -e HTTP_LOGGING_ENABLED=1 appsvc/python:3.8_20200707.6
INFO - Initiating warmup request to container azapp-rio-analyse-k6xbl__6cdd_0_ee823bd7_msiProxy for site azapp-rio-analyse-k6xbl__6cdd
INFO - Container azapp-rio-analyse-k6xbl__6cdd_0_ee823bd7_msiProxy for site azapp-rio-analyse-k6xbl__6cdd initialized successfully and is ready to serve requests.
INFO - Initiating warmup request to container azapp-rio-analyse-k6xbl__6cdd_0_ee823bd7 for site azapp-rio-analyse-k6xbl__6cdd
_____
/ _ \ __________ _________ ____
/ /_\ \___ / | \_ __ \_/ __ \
/ | \/ /| | /| | \/\ ___/
\____|__ /_____ \____/ |__| \___ >
\/ \/ \/
A P P S E R V I C E O N L I N U X
Documentation: http://aka.ms/webapp-linux
Python 3.8.3
Note: Any data outside '/home' is not persisted
Starting OpenBSD Secure Shell server: sshd.
App Command Line not configured, will attempt auto-detect
Launching oryx with: create-script -appPath /home/site/wwwroot -output /opt/startup/startup.sh -virtualEnvName antenv -defaultApp /opt/defaultsite
Found build manifest file at '/home/site/wwwroot/oryx-manifest.toml'. Deserializing it...
Build Operation ID: |mt6xPWP5VVs=.cc9e7dda_
Oryx Version: 0.2.20200706.2, Commit: 42be45d884938c3c818ba08e9e4760b1136fd9b3, ReleaseTagName: 20200706.2
Detected an app based on Django
Generating `gunicorn` command for 'main.wsgi'
Writing output script to '/opt/startup/startup.sh'
Using packages from virtual environment pythonenv3.8 located at /home/site/wwwroot/pythonenv3.8.
Updated PYTHONPATH to ':/home/site/wwwroot/pythonenv3.8/lib/python3.8/site-packages'
[2020-09-13 16:29:57 +0000] [37] [INFO] Starting gunicorn 20.0.4
[2020-09-13 16:29:57 +0000] [37] [INFO] Listening at: http://0.0.0.0:8000 (37)
[2020-09-13 16:29:57 +0000] [37] [INFO] Using worker: sync
[2020-09-13 16:29:57 +0000] [39] [INFO] Booting worker with pid: 39
INFO:opencensus.ext.postgresql.trace:Integrated module: postgresql
[2020-09-13 18:30:13 +0200] [39] [ERROR] Exception in worker process
Traceback (most recent call last):
File "/opt/python/3.8.3/lib/python3.8/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
worker.init_process()
File "/opt/python/3.8.3/lib/python3.8/site-packages/gunicorn/workers/base.py", line 119, in init_process
self.load_wsgi()
File "/opt/python/3.8.3/lib/python3.8/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
self.wsgi = self.app.wsgi()
File "/opt/python/3.8.3/lib/python3.8/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/opt/python/3.8.3/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
return self.load_wsgiapp()
File "/opt/python/3.8.3/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
return util.import_app(self.app_uri)
File "/opt/python/3.8.3/lib/python3.8/site-packages/gunicorn/util.py", line 358, in import_app
mod = importlib.import_module(module)
File "/opt/python/3.8.3/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 783, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/site/wwwroot/main/wsgi.py", line 16, in <module>
application = get_wsgi_application()
File "/home/site/wwwroot/django/core/wsgi.py", line 12, in get_wsgi_application
django.setup(set_prefix=False)
File "/home/site/wwwroot/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/site/wwwroot/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/home/site/wwwroot/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/opt/python/3.8.3/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 783, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/site/wwwroot/users/models.py", line 25, in <module>
class ContactInfo(models.Model):
File "/home/site/wwwroot/users/models.py", line 29, in Search
data = models.JSONField(encoder=DjangoJSONEncoder, null=True, db_index=True)
AttributeError: module 'django.db.models' has no attribute 'JSONField'
[2020-09-13 18:30:13 +0200] [39] [INFO] Worker exiting (pid: 39)
[2020-09-13 16:30:13 +0000] [37] [INFO] Shutting down: Master
[2020-09-13 16:30:13 +0000] [37] [INFO] Reason: Worker failed to boot.
ERROR - Container azapp-rio-analyse-k6xbl__6cdd_0_ee823bd7 for site azapp-rio-analyse-k6xbl__6cdd has exited, failing site start
ERROR - Container azapp-rio-analyse-k6xbl__6cdd_0_ee823bd7 didn't respond to HTTP pings on port: 8000, failing site start. See container logs for debugging.
INFO - Stopping site azapp-rio-analyse-k6xbl__6cdd because it failed during startup.

Answer 1

I ran into this issue with my docker app when I forgot to update my requirements.txt file to use Django>=3.1.0,<3.2.0, instead of Django 3.0.8. I also had to run docker-compose build after updating that.

Answer 2

I saw this error because I was using pipenv in my project and had forgotten to run pipenv shell command before running the app.

Answer 3

I have the same problem while trying to run my application on my server.
Locally (ubuntu-20.04) it works with
Python==3.6.7
Django==3.1.3
but on my server (debian-stretch) with the same version of django and python, I got the same problem!
I've tryied with django==3.0 and the problem remains
Nov 05...gunicorn[19911]: created_group = models.JSONField(default=default_created_group)
Nov 05...gunicorn[19911]: AttributeError: module 'django.db.models' has no attribute 'JSONField'
The only way to apply the new models JSONField recommendation is to use Django 3.1

Answer 4

Actually our wwwroot folder contained errant files and folders dating back from previous git pushes never cleaned-up, among them an old install of Django v3.0.5 not erased.
Accessing wwwroot with FTP ftps://...ftp.azurewebsites.windows.net/site/wwwroot and erasing all its content solved this issue.