def __init__(self,
stock_selection=None,
facet_selection=None,
index=None,
request=None):
"""
Values are extracted from the request.
This will raise an IndexError if there is no object at the given index.
"""
if index is None:
if request:
self.index = int(request.GET.get("index", 0))
else:
self.index = 0
else:
self.index = index
self.stock_selection = stock_selection
self.facet_selection = facet_selection
if facet_selection:
self.stock_facet_qs = facet_selection.stock_facet_qs(
self.stock_selection.stock)
else:
self.stock_facet_qs = StockFacetQuerySet(
stock=self.stock_selection.stock)
try:
self.object_at_index = self.stock_facet_qs[self.index]
except IndexError:
self.object_at_index = None
def stock_facet_qs(self, stock):
return StockFacetQuerySet(stock=stock, facet_slug=self.slug, facet_value=self.value)
