Django/Jython ImproperlyConfigured error - django

As specified in the tutorial (http://www.jython.org/jythonbook/en/1.0/JythonDjango.html), I am using doj.backends.zxjdbc.postgresql as Django's DB engine. However, when I do
jython manage.py syncdb
I get an ImproperlyConfigured error, stating that doj.backends.zxjdbc.postgresql is not an available backend and that no module named postgresql exists. Strangely, if I enter the Jython shell, I can do
import doj.backends.zxjdbc.postgresql
without any error messages.
Ideas on what is going on here?

Solution: django-jython is out of date. 1.4 is not currently supported, so there is no solution to this issue other than to revert to a supported version of django.

Unfortunately it seems like django-jython is not seeing much/any active development anymore...
However, I have found that development versions available at the Google code repository below do work in Django 1.5 (and I assume they may work with 1.4 too, if you pick the right version):
https://code.google.com/p/django-jython/source/list
In particular, I have found that this dev version works with Django 1.5:
https://code.google.com/p/django-jython/source/detail?r=c4a0dd949a6d86a4baf8d1bed3b1926fa5318e87

Related

how to work with south in 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.

Can't start accounts app using django-userena

Tried to install django-userena, and when launching
python manage.py startapp polls
I get the userena.compat.SiteProfileNotAvailable error.
So this is very odd.
First of all, official Django docs claims to depricate AUTH_PROFILE_MODULE setting : https://docs.djangoproject.com/en/1.7/releases/1.7/.
But /usr/local/lib/python2.7/dist-packages/userena/utils.py raises this error if it can't find AUTH_PROFILE_MODULE setting. Does it mean I can't use userena unless I downgrade to versions 1.6 or lower?
Secondly, I haven't created any models yet, so which profile I should have been addressing when starting app?
Django version 1.7.7, userena - 1.4.0
I solved the problem by uninstalling userena, creating accounts app, editing accounts/models.py file and only then installing userena.
Worked out perfectly

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)

Using Django with the Drizzle database?

Has anyone experience in using Django with the Drizzle database?
The first GA version of Drizzle has just been released and from my understanding it should be be a good match for Django. Being a stripped down version of MySQL it still provides all the needed functionality and hopefully a better performance.
To use the Django MySQL backend, you have to install the MySQLdb driver. When I install MySQLdb on a machine that has Drizzle installed (but not MySQL), I get this error: EnvironmentError: mysql_config not found. I believe this is the step where MySQLdb is looking for compiler options to build the client. We probably need a fork of the Django MySQL backend that uses a Python wrapper around libdrizzle.
MySQLdb is playing just fine with Drizzle. We use it to work with SQLAlchemy.
I can't speak to the issues you encountered, but I also tend to have both MySQL and Drizzle on my machines. Things built ok for me, but I'd be happy to help resolve any issues anyone else is having