from django import template

import os

from member.models import Config


def get_config(value):
    """
    Return a value stored into the config table in the database with a given key.
    """
    config = Config.objects.get_or_create(key=value)[0]
    return config.value


def get_env(value):
    """
    Get a specified environment variable.
    """
    return os.getenv(value)


register = template.Library()
register.filter('get_config', get_config)
register.filter('get_env', get_env)