from shuup.core.models import Shop
[docs]
class CurrencyBound:
"""
Mixin for adding currency property defaulting currency of the first Shop.
The currency property is "lazy" so that database is not accessed on
initialization, since this mixin will be used by some `AdminModule`
classes and they will be initialized at import time by
`module_registry.register` (which is called at import because
`admin.urls` calls `get_module_urls` at import).
"""
[docs]
def __init__(self, currency=None, *args, **kwargs):
self._currency = currency
super().__init__(*args, **kwargs)
@property
def currency(self):
if self._currency is None:
first_shop = Shop.objects.first()
if first_shop:
self._currency = first_shop.currency
return self._currency