A helper class for handling configuration defaults of packaged Django apps gracefully.
Say you have an app called
myapp with a few defaults, which you want
to refer to in the app's code without repeating yourself all the time.
appconf provides a simple class to implement those defaults. Simply add
something like the following code somewhere in your app files::
from appconf import AppConf class MyAppConf(AppConf): SETTING_1 = "one" SETTING_2 = ( "two", )
``AppConf`` classes depend on being imported during startup of the Django process. Even though there are multiple modules loaded automatically, only the ``models`` modules (usually the ``models.py`` file of your app) are guaranteed to be loaded at startup. Therefore it's recommended to put your ``AppConf`` subclass(es) there, too.
The settings are initialized with the capitalized app label of where the
setting is located at. E.g. if your
models.py with the
is in the
myapp package, the prefix of the settings will be
You can override the default prefix by specifying a
prefix attribute of
from appconf import AppConf class AcmeAppConf(AppConf): SETTING_1 = "one" SETTING_2 = ( "two", ) class Meta: prefix = 'acme'
MyAppConf class will automatically look at Django's global settings
to determine if you've overridden it. For example, adding this to your site's
settings.py would override
SETTING_1 of the above
ACME_SETTING_1 = "uno"
In case you want to use a different settings object instead of the default
'django.conf.settings', set the
holder attribute of the inner
Meta class to a dotted import path::
from appconf import AppConf class MyAppConf(AppConf): SETTING_1 = "one" SETTING_2 = ( "two", ) class Meta: prefix = 'acme' holder = 'acme.conf.settings'
If you ship an
AppConf class with your reusable Django app, it's
recommended to put it in a
conf.py file of you app package and
django.conf.settings in it, too::
from django.conf import settings from appconf import AppConf class MyAppConf(AppConf): SETTING_1 = "one" SETTING_2 = ( "two", )
In the other files of your app you can easily make sure the settings
are correctly loaded if you import Django's settings object from that
module, e.g. in your app's
from django.http import HttpResponse from myapp.conf import settings def index(request): text = 'Setting 1 is: %s' % settings.MYAPP_SETTING_1 return HttpResponse(text)