new file 100644
from registrasion.models import commerce
from registrasion.controllers.category import CategoryController
from registrasion.controllers.item import ItemController
from decimal import Decimal
from django import template
from django.conf import settings
from django.db.models import Sum
from urllib import urlencode # TODO: s/urllib/six.moves.urllib/
register = template.Library()
@register.simple_tag(takes_context=True)
def donation_income(context, invoice):
''' Calculates the donation income for a given invoice.
Returns:
the donation income.
'''
# 15% (FSA) goes to Conservancy; 85% is real goods
fsa_rate = Decimal("0.85")
rbi_full_ticket = Decimal("68.00")
rbi_early_bird_discount = Decimal("-21.35")
rbi = []
for line in invoice.lineitem_set.all():
if line.product.category.name == "Ticket":
if line.product.name.startswith("Unaffiliated Individual"):
# Includes full price & discounts
rbi.append(line.total_price * fsa_rate)
else:
if line.total_price > 0:
rbi.append(rbi_full_ticket)
elif line.total_price < 0:
rbi.append(rbi_early_bird_discount)
elif line.product.category.name == "T-Shirt":
donation = (invoice.value - sum(rbi))
return donation.quantize(Decimal('.01'))