def generate_email_subject_and_body( session, order, trade ): from json import dumps from pyblinktrade.json_encoder import JsonEncoder from models import Currency qty_currency = order.symbol[:3] formatted_qty = Currency.format_number( session, qty_currency, trade.size / 1.e8 ) price_currency = order.symbol[3:] formatted_price = Currency.format_number( session, price_currency, trade.price / 1.e8 ) formatted_total_price = Currency.format_number( session, price_currency, trade.size/1.e8 * trade.price/1.e8 ) email_subject = 'E' email_template = "order-execution" email_params = { 'username': order.user.username, 'order_id': order.id, 'trade_id': trade.id, 'side': order.side, 'executed_when': trade.created, 'qty': formatted_qty, 'price': formatted_price, 'total': formatted_total_price } return email_subject, email_template, dumps(email_params, cls=JsonEncoder)