You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
33 lines
1.2 KiB
33 lines
1.2 KiB
# This file is part of k4ever, a point-of-sale system
|
|
# Contact............ <k4ever@lists.someserver.de>
|
|
# Website............ http://k4ever.someserver.de/
|
|
# Bug tracker........ http://k4ever.someserver.de/report
|
|
#
|
|
# Licensed under GNU Affero General Public License v3 or later
|
|
|
|
from django.contrib.admin.filterspecs import FilterSpec, BooleanFieldFilterSpec
|
|
|
|
class IsNegativeFilterSpec(FilterSpec):
|
|
""" Custom filter to display only users with negative balance """
|
|
def __init__(self, f, request, *args, **kwargs):
|
|
super(IsNegativeFilterSpec, self).__init__(f, request, *args, **kwargs)
|
|
self.lookup_kwarg = '%s__lt' % f.name
|
|
self.lookup_val = request.GET.get(self.lookup_kwarg, None) # Check if current request already has a filter
|
|
|
|
def title(self):
|
|
return 'Kontostand'
|
|
|
|
def choices(self, cl):
|
|
yield {
|
|
'selected': self.lookup_val == None,
|
|
'query_string': "?",
|
|
'display': 'Alle'}
|
|
yield {
|
|
'selected': self.lookup_val == '0',
|
|
'query_string': cl.get_query_string(
|
|
{self.lookup_kwarg: 0},
|
|
['balance__isnull']),
|
|
'display': 'Nur Negative'}
|
|
|
|
FilterSpec.filter_specs.insert(0, (lambda f: getattr(f, 'has_negative_filter', False), IsNegativeFilterSpec))
|