Google App Engine and Django support
django, google-app-engine, pycharm
Solution
Looks like PyCharms call of `syncdb` is using the wrong Django installation. `google.appengine.ext.django.backends.rdbms` is not part of the official Django distribution, but it is part of GAEs django. My GAE django is in `/usr/local/google_appengine/lib/`
If you're on linux/OS X you could add this to your `.bashrc`/`.bash_profile` and make syncdb use this:
export GAE="/usr/local/google_appengine"
export PYTHONPATH="$PYTHONPATH:$GAE:$GAE/lib/django_1_4"
export PATH=${PATH}:$GAE/lib/django_1_4/django/bin/
export PATH=${PATH}:/usr/local/mysql/bin
I wrote a tutorial about using Django with GAE and Google Cloud SQL. There might be some relevant infos there as well.
Problem
I'm trying to deploy my `Django` app to `Google App Engine` (GAE) as per this document. I created and configured a `Google Cloud SQL` instance, as described in that document. I use `PyCharm` as development environment and created a GAE project with Django support. I configured a local server to point to the GAE server. When I try to launch the GAE local server in PyCharm, it's raising exceptions on an improperly configured database in `SETTINGS.PY`: ``` google.appengine.ext.django.backends.rdbms' isn't an available database backend ``` I can see from the stack trace that the local server is using the Django version in `/Library/Python/2.7/site-packages` while I presume it should use the one in `/usr/local/google_appengine/lib`. What would be the best way to solve this given that I have other Django projects as well that should use the Django version in `/Library/Python/2.7/site-packages`? If I modify my `PYTHONPATH` to include the GAE version of Django, would not all my projects be referencing that version of Django? EDIT: To be more precise, the GAE local server starts just fine but throws the mentioned stack trace when I do a `syncdb` task to update my database. EDIT 2: In PyCharm Settings under Python Interpreter, I found the possibility to modify paths and added the Django 1.4 version as distributed with GAE SDK. When I start the GAE development server, I can actually see it uses the Django version from the GAE SDK but it still crashes on the database definitions: ``` Error was: No module named google.appengine.ext.django.backends.rdbms.base ``` EDIT 3: I ran into problems when trying to deploy an existing Django app using the tutorial. See this separate question.