how to work with south in django - django

I am trying to learn about python-django web framework.
I have successfully installed database migration tool 'south' in my ubuntu os and also added it to INSTALLED_APPS for using this tool for my web app.
When I run any command using manage.py like
$ ./manage.py runserver
I get this error:
"/usr/local/lib/python2.7/dist-packages/South-1.0.2-py2.7.egg/south/db/generic.py:9: RemovedInDjango19Warning: The django.db.backends.util module has been renamed. Use django.db.backends.utils instead.
from django.db.backends.util import truncate_name
There is no South database module 'south.db.sqlite3' for your database. Please either choose a supported database, check for SOUTH_DATABASE_ADAPTER[S] settings, or remove South from INSTALLED_APPS."
I don't understand what it means. How can I fix this error?
Please give your useful suggestion to solve this error.Thanks

Firstly, you appear to be using the development version of Django. Don't do that, especially as you're just beginning. Use the latest actual release, 1.8.
Secondly, since 1.7 Django has included built-in migrations. There is no need to install South.

Related

Does Django 1.10 still need South to manage migrations?

I am following online instructions on starting a Django project the right way.
The instructions are based on an earlier version of Django. From my (admittedly limited) knowledge of Django. The latest release of Django (1.10 at the time of posing this question), already handles migrations seemingly well - by way of the manage.py script.
My question then is this: Do I still need to install South to manage my migrations, or can I simply skip that part of the instructions, and use manage.py to deal with my db schema changes?
No, South was for Django before 1.7. With 1.10 everything you would have used it for is baked into Django itself.

South error, but not using it. "no South database module 'south.db.mysql'"

After installing of Django I get this error message (when I want to run migrations or runserver):
There is no South database module 'south.db.mysql' for your database.
Please either choose a supported database, check for
SOUTH_DATABASE_ADAPTER[S] settings, or remove South from
INSTALLED_APPS.
I dont want to use South and it is also not defined in INSTALLED_APPS . Why am I getting this error?
I got the same error. It is resolved by removing south from your environment , by running
pip uninstall south
Turns out South got installed after all because of some dependency,
and seems to be incompatible with current Django (1.82)
Solution that worked for me was to downgrade Django:
$ pip install -U "Django==1.7"
(ps. I didn't need to define anything about South in settings, so it is not used, but probably some installed app is looking for it anyway..)
I recreated this issue by doing these steps:
Installed django1.5 and south.
With the environment, Created a django project.
Upgrade django1.5 to django1.82
Now in runserver,
I've There is no South database module 'south.db.mysql' for your database. Please either choose a supported database, check for SOUTH_DATABASE_ADAPTER[S] settings, or remove South from INSTALLED_APPS.
Possible solution:
Uninstall south if you are in django1.82
Downgrade your django, where south is a different package.

Error with django-registration module: AppRegistryNotReady("Models aren't loaded yet.")

I am having a problem getting the Django registration module to work. I am relatively new to Django, having only worked through a few examples, now wanting to rebuild a site using user registration, that I've previously made with python.
I am using Python 2.7, Django 1.7.1, and my operating system is Ubuntu 14.04. I'm also using Eclipse/PyDev for my IDE.
I keep getting the error message:
raise AppRegistryNotReady("Models aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Models aren't loaded yet.
I have installed both the django-registration and django-registration-redux modules, understanding that there may issues with installing django-registration in Django 1.7. Should I copy the registration module directly into my app, although not advised, but for troubleshooting? Should I uninstall something before I install a new package?
The django-registration module resides in "/usr/local/lib/python2.7/dist-packages." I'm not sure where the django-registration-redux module should have ended up at, although it deposited "django_registration_redux-1.1.egg-info" with the dist-packages.
I have added 'registration', to the settings file, and to my urls' file pattern I've added: (r'^accounts/', include('registration.backends.default.urls')),
I've read numerous on-line postings about this issue, but I can't get around this block. Should I uninstall Django 1.7.1, and install Django 1.6 to avoid this impasse?
Thanks,
Walter Goedecke
Have you considered using django-allauth instead of django-registration?
As I understand it, django-registration is no longer being maintained.
Were you able to resolve this?
When you say “I have installed both the django-registration and django-registration-redux modules”, do you mean you are trying to use both at the same time, or you tried one and then the other? You should only be using django-registration-redux, I believe django-registration stopped being maintained during one of the Django 1.6 releases, maybe it was 1.5 don’t recall. If its of any help, we have Django 1.7.9, Django 1.8.1, and Django 1.8.3 working with django-registration-redux 1.1.
It sounds like you are installing your python packages system wide (you said its residing in /usr/local/lib/python2.7/dist-packages). There is a great tool called virtualenv that lets you keep all of your projects isolated, in their own virtual environment with their unique dependences. This way one project can be using django 1.5 while another is using django 1.7, one project can use django-registration-redux while the other uses allauth, etc. The other great thing about it, is that it makes your projects more portable, easier to share, and easier to update.
If you haven’t tried it yet, you should check it out!
http://docs.python-guide.org/en/latest/dev/virtualenvs/
I found this link very helpful when I was first getting started with Python and Django development:
http://www.jeffknupp.com/blog/2013/12/18/starting-a-django-16-project-the-right-way/

No module named filterspecs

In eclipse,when i create new project, i got an error like,
Error creating Django project
settings.py file not created
Stdout:
Stderr:
If i synchronize present project and runserver, iam getting Error: No module named filterspecs.But i haven't used filterspecs in my project. Already filterspecs.py installed in usr/local/lib/python2.7/dist-packages/django/contrib/admin.
Kindly advise to rectify the error.
You may be using django.contrib.admin.filterspecs to create custom filters for your admin pages, such as outlined here:
Custom Filter in Django Admin on Django 1.3 or below
Unfortunatelly, you will have to rewrite these using the new list_filter module functionality.
See the manual here:
https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.list_filter
This happened to me as well, even though my code wasn't directly using any filterspecs.
Run python manage.py runserver --traceback to see exactly where the error is coming from.
This module was removed in Django 1.4, but other external modules you have listed in your settings.py might still be using it, so make sure you upgrade everything in your INSTALLED_APPS list. In my case, I was using an outdated version of FeinCMS, but after I upgraded it, the error went away.
Obviously, your system is lacking filterspecs module which is required by the project. Install it by typing sudo pip install filterspecs in the console (if you are on linux)

Do I need to uninstall Django 1.3 before installing Django-nonrel?

I want to use multiple databases in my Django project. I currently have Django 1.3 installed and my project uses PostgreSQL.
I want to add an app that uses MongoDB.
As I understand(please correct me if I'm wrong), to support MongoDB, I need Django-nonrel which is a fork that provides support for non-relational databases.
So what do I need to do to get MongoEngine running in my Django project while still keeping support for the Postgre stuff in my project?
Should I just run the setup.py in the Django-nonrel package? Uninstall the official Django 1.3? I'm confused here.
If you're using pip, I think it will do it for you automatically because nonrel marks itself as supplying "django".
You are correct that you will need to uninstall django and install django-nonrel if pip doesn't do that automatically.
As for the apps living on the same project, in your database dictionary you just set one db to use postgres and one to use mongo.
If you have any questions we are here at #django-nonrel on freenode irc.
best thing you can do is installing django non real on virtualenv
http://zcentric.com/2010/09/24/get-django-nonrel-working-with-virtualenv/
this way you can have both working together (don't need to uninstall django first)