def update_currencies():
"""
Downloads all available currencies and prepares the database.
"""
response = get("http://apilayer.net/api/live?access_key=%s" %
(Config.APILAYER_KEY)).json()
for currency_code in response["quotes"].keys():
currency = get_currency(short_code=currency_code[3:]).first()
if not currency:
currency = Currency(short_code=currency_code[3:])
session.add(currency)
session.commit()
currency.value = response["quotes"][
currency_code] / Config.CURRENCY_DIVIDER
currency.last_update = get_current_date()
session.commit()
