tuple settings.INSTALLED_APPS doesn't have an insert attribute

[Satchitananda]

from django.conf import settings
settings.INSTALLED_APPS.insert(0, 'django_mongodb_engine')

this code from django_mongodb_engine.init.py throws an AttributeError: 'tuple' object has no attribute 'insert'.

[georgedorn]

Try changing your settings.INSTALLED_APPS to a list instead of a tuple.

I'm a little confused as to why this code exists at all; perhaps it would be better to require that the user include this app in their INSTALLED_APPS instead of monkeypatching it in?

[Satchitananda]

Guess so to, but why this code exist here? And does the source code still depends on patched django-nonrel?

[shashank9487]

when i change INSTALLED_APPS tuple to a list, then i got this error

Traceback (most recent call last):
File "manage.py", line 10, in
execute_from_command_line(sys.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/init.py", line 397, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/init.py", line 390, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 240, in run_from_argv
self.execute(_args, *_options.dict)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 278, in execute
translation.activate('en-us')
File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/init.py", line 130, in activate
return _trans.activate(language)
File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 188, in activate
_active.value = translation(language)
File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 177, in translation
default_translation = _fetch(settings.LANGUAGE_CODE)
File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 159, in _fetch
app = import_module(appname)
File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 35, in import_module
import(name)
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/init.py", line 6, in
from django.contrib.admin.sites import AdminSite, site
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/sites.py", line 4, in
from django.contrib.admin.forms import AdminAuthenticationForm
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/forms.py", line 6, in
from django.contrib.auth.forms import AuthenticationForm
File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/forms.py", line 15, in
from django.contrib.auth.models import User
File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/models.py", line 42, in
class Permission(models.Model):
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 96, in new
new_class.add_to_class('_meta', Options(meta, **kwargs))
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 264, in add_to_class
value.contribute_to_class(cls, name)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/options.py", line 124, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/usr/local/lib/python2.7/dist-packages/django/db/init.py", line 34, in getattr
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 193, in getitem
conn = backend.DatabaseWrapper(db, alias)
File "/usr/local/lib/python2.7/dist-packages/django_mongodb_engine/base.py", line 88, in init
self.ops = DatabaseOperations(self)
File "/usr/local/lib/python2.7/dist-packages/djangotoolbox/db/base.py", line 28, in init
super(NonrelDatabaseOperations, self).init()
TypeError: Error when calling the metaclass bases
init() takes exactly 2 arguments (1 given)

[shashank9487]

I got news from everywhere mongoDB is compatible with django < 1.3....still in old version converting tuple to list is working but above itsn't

[dehiz]

You should try to install it like this (it works for me with django 1.4):

> pip install -r requirements.txt

with requirements.txt containing the following lines:

https://github.com/django-nonrel/django/tarball/nonrel-1.4
https://github.com/django-nonrel/djangotoolbox/tarball/toolbox-1.4
git+https://github.com/django-nonrel/mongodb-engine@mongodb-engine-1.4-beta
pymongo

(Ps: at least git 1.8 must be installed on your machine ...)

[liuyuwan]

Hi,

I tried dehiz's suggestions, I still have the same issue.

First I got this:
settings.INSTALLED_APPS.insert(0, 'django_mongodb_engine'
AttributeError: 'tuple' object has no attribute 'insert'

then I changed { to [ in INSTALLED_APPS in settings.py
now I got this:
super(NonrelDatabaseOperations, self).init()
TypeError: init() takes exactly 2 arguments (1 given)

Please advise

Yu