/usr/lib/python3/dist-packages/bitfield/admin.py is in python3-django-bitfield 1.8.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | import six
from django.db.models import F
from django.core.exceptions import ValidationError
from django.utils.translation import ugettext_lazy as _
from django.contrib.admin import FieldListFilter
from django.contrib.admin.options import IncorrectLookupParameters
from bitfield import Bit
from bitfield.compat import bitor
class BitFieldListFilter(FieldListFilter):
"""
BitField list filter.
"""
def __init__(self, field, request, params, model, model_admin, field_path):
self.lookup_kwarg = field_path
self.lookup_val = int(request.GET.get(self.lookup_kwarg, 0))
self.flags = field.flags
self.labels = field.labels
super(BitFieldListFilter, self).__init__(
field, request, params, model, model_admin, field_path)
def queryset(self, request, queryset):
filter = dict((p, bitor(F(p), v)) for p, v in six.iteritems(self.used_parameters))
try:
return queryset.filter(**filter)
except ValidationError as e:
raise IncorrectLookupParameters(e)
def expected_parameters(self):
return [self.lookup_kwarg]
def choices(self, cl):
yield {
'selected': self.lookup_val == 0,
'query_string': cl.get_query_string({}, [self.lookup_kwarg]),
'display': _('All'),
}
for number, flag in enumerate(self.flags):
bit_mask = Bit(number).mask
yield {
'selected': self.lookup_val == bit_mask,
'query_string': cl.get_query_string({self.lookup_kwarg: bit_mask}),
'display': self.labels[number],
}
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