constance_lazy.py

gistfile1.py

from django.utils.functional import lazy

import constance.config
from constance.admin import FIELDS

compatible_types = list(FIELDS.keys())


def config(name, default=None):
    """
    Just a silly wrapper arround the constance's config object.
    """
    return getattr(constance.config, name, default)

"""
A function to use constance's config object in an environment in which
one requires lazy values such a model field parameters.

E.g. something that is a pretty stupid idea but should show the risk as well::

    class Entry(models.Model):
        title = models.CharField(max_length=config_lazy('ENTRY_MAX_LENGTH'))

.. where ``ENTRY_MAX_LENGTH`` is the name of the constance config value.

"""
config_lazy = lazy(config, *compatible_types)