You need an instance to evaluate member variables. These are mutable, so can
be different per instance.
Settings should use a dictionary.
Sent from my iPhone
> On Dec 27, 2018, at 3:15 AM, אורי <u...@speedy.net> wrote:
>
> Hi,
>
> We are using Django for Speedy Net and Speedy Match (currently Django
> 1.11.17, we can't upgrade to a newer version of Django because of one of our
> requirements, django-modeltranslation). I want to define some of our settings
> as classes. For example:
>
> class UserSettings(object):
> MIN_USERNAME_LENGTH = 6
> MAX_USERNAME_LENGTH = 40
>
> MIN_SLUG_LENGTH = 6
> MAX_SLUG_LENGTH = 200
>
> # Users can register from age 0 to 180, but can't be kept on
> the site after age 250.
> MIN_AGE_ALLOWED_IN_MODEL = 0 # In years.
> MAX_AGE_ALLOWED_IN_MODEL = 250 # In years.
>
> MIN_AGE_ALLOWED_IN_FORMS = 0 # In years.
> MAX_AGE_ALLOWED_IN_FORMS = 180 # In years.
>
> MIN_PASSWORD_LENGTH = 8
> MAX_PASSWORD_LENGTH = 120
>
> PASSWORD_VALIDATORS = [
> {
> 'NAME':
> 'speedy.core.accounts.validators.PasswordMinLengthValidator',
> },
> {
> 'NAME':
> 'speedy.core.accounts.validators.PasswordMaxLengthValidator',
> },
> ]
>
> (which is defined in
> https://github.com/speedy-net/speedy-net/blob/uri_merge_with_master_2018-12-26_a/speedy/net/settings/global_settings.py).
> And then in the models, I tried to use:
>
> from django.conf import settings as django_settings
>
> class User(ValidateUserPasswordMixin, PermissionsMixin, Entity,
> AbstractBaseUser):
> settings = django_settings.UserSettings
>
> (and then use attributes of `settings`, such as
> `settings.MIN_USERNAME_LENGTH`, in the class).
>
> But it throws an exception
>
> AttributeError: 'Settings' object has no attribute 'UserSettings'
>
> (but it doesn't throw an exception if I use there a constant which is not a
> class).
>
> This is the first problem. In the meantime, I defined instead:
>
> from speedy.net.settings import global_settings as
> speedy_net_global_settings
>
> class User(ValidateUserPasswordMixin, PermissionsMixin, Entity,
> AbstractBaseUser):
> settings = speedy_net_global_settings.UserSettings
>
> The second problem, is how do I override such settings in tests? For example,
> I use the following code:
>
> from speedy.core.settings import tests as tests_settings
>
>
> @override_settings(MAX_NUMBER_OF_FRIENDS_ALLOWED=tests_settings.OVERRIDE_MAX_NUMBER_OF_FRIENDS_ALLOWED)
>
> in
> https://github.com/speedy-net/speedy-net/blob/uri_merge_with_master_2018-12-26_a/speedy/core/friends/tests/test_views.py.
> But if `MAX_NUMBER_OF_FRIENDS_ALLOWED` would be defined in the class
> `UserSettings`, how do I override it?
>
> Thanks,
> אורי (Uri)
> u...@speedy.net
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