def _create_currencies():
from pooldlib.postgresql import Currency
c = Currency(title='United States Dollar',
code='USD',
number=840,
unit='Dollar',
unit_plural='Dollars',
sign='$')
c.title = 'United States Dollar'
c.code = 'USD'
c.number = 840
c.unit = 'Dollar'
c.unit_plural = 'Dollars'
c.sign = '$'
db.session.add(c)
db.session.commit()
def balance_for_currency(self, currency, get_or_create=True, for_update=False):
"""Return a user's :class:`pooldlib.postgresql.models.Balance` for a given
:class:`pooldlib.postgresql.models.Currency` or currency code (:class:`str`).
:param currency: Currency of balance to return.
:type currency: :class:`pooldlib.postgresql.models.Balance` or string.
:param get_or_create: Should a balance be created for the user in the target currency if none is found?
:type get_or_create: boolean, default `True`
:param for_update: If `True` the `FOR UPDATE` directive will be used, locking the row for an `UPDATE` query.
:type for_update: boolean, default `False`
"""
from pooldlib.api import balance
from pooldlib.postgresql import (db,
Currency as CurrencyModel,
Balance as BalanceModel)
if isinstance(currency, basestring):
currency = CurrencyModel.get(currency)
if self.__class__.__name__ == 'User':
balance = balance.get(for_update=for_update, user_id=self.id, currency_id=currency.id)
else:
balance = balance.get(for_update=for_update, campaign_id=self.id, currency_id=currency.id)
# If we don't find a balance for the user, create if requested to
if not balance and get_or_create:
balance = BalanceModel()
balance.enabled = True
balance.amount = Decimal('0.0000')
balance.currency = currency
balance.type = self.__class__.__name__.lower()
if self.__class__.__name__ == 'User':
balance.user = self
else:
balance.campaign = self
db.session.add(balance)
self.balances.append(balance)
db.session.flush()
# Balance.get returns a list if for_update=False. A user should only
# have a single balance for a given currency, so return the
# CurrencyModel object instead of a list.
if isinstance(balance, list):
balance = balance[0]
return balance
def create_balance(self, user=None, campaign=None, currency_code=None, amount=None):
amount = amount if amount is not None else Decimal('50.0000')
if not currency_code:
currency_code = 'USD'
currency = Currency.get(currency_code)
b = Balance()
b.enabled = True
b.amount = amount
b.currency = currency
if user is not None:
b.user_id = user.id
b.type = 'user'
elif campaign is not None:
b.campaign_id = campaign.id
b.type = 'campaign'
self.commit_model(b)
return b
def create_balance(self,
user=None,
campaign=None,
currency_code=None,
amount=None):
amount = amount if amount is not None else Decimal('50.0000')
if not currency_code:
currency_code = 'USD'
currency = Currency.get(currency_code)
b = Balance()
b.enabled = True
b.amount = amount
b.currency = currency
if user is not None:
b.user_id = user.id
b.type = 'user'
elif campaign is not None:
b.campaign_id = campaign.id
b.type = 'campaign'
self.commit_model(b)
return b
