def list_currencies(cls):
"""
Return the list of currencies as a list of pairs::
((1, "$ United State Dollar"), ...)
"""
currencies = CurrencyEntity.all().order("name").run()
tuple = [(c.key().id(), "%s %s" % (c.name, c.symbol)) for c in currencies]
return tuple
def create_currency(self, name, code, symbol):
""" Create a new currency """
try:
currency = CurrencyEntity.create(name=name, code=code, symbol=symbol)
currency.put()
except (DuplicatedEntityException):
raise CurrencyException
return currency
def find_by_id(cls, currency_id):
return CurrencyEntity.get_by_id(currency_id)
