class CategoryListFilter(SimpleListFilter):
# USAGE
# In your admin class, pass trhe filter class as tuple for the list_filter attribute:
#
# list_filter = (CategoryListFilter,)
# Human-readable title which will be displayed in the
# right admin sidebar just above the filter options.
title = _('categories')
# Parameter for the filter that will be used in the URL query.
parameter_name = 'category'
def lookups(self, request, model_admin):
"""
Returns a list of tuples. The first element in each
tuple is the coded value for the option that will
appear in the URL query. The second element is the
human-readable name for the option that will appear
in the right sidebar.
"""
list_tuple = []
for category in Category.objects.get_published_original():
#print category
list_tuple.append((category.id, category.translated().title))
return list_tuple
def queryset(self, request, queryset):
"""
Returns the filtered queryset based on the value
provided in the query string and retrievable via
`self.value()`.
"""
# Compare the requested value (either '80s' or 'other')
# to decide how to filter the queryset.
if self.value():
return queryset.filter(category__id=self.value())
else:
return queryset