forked from feincms/feincms
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathfilters.py
More file actions
120 lines (96 loc) · 3.92 KB
/
Copy pathfilters.py
File metadata and controls
120 lines (96 loc) · 3.92 KB
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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
# Thanks to http://www.djangosnippets.org/snippets/1051/
#
# Authors: Marinho Brandao <marinho at gmail.com>
# Guilherme M. Gondim (semente) <semente at taurinus.org>
from operator import itemgetter
import django
from django.contrib.admin.filters import ChoicesFieldListFilter
from django.db.models import Count
from django.utils.encoding import smart_str
from django.utils.safestring import mark_safe
from django.utils.translation import gettext as _
from feincms.utils import shorten_string
class ParentFieldListFilter(ChoicesFieldListFilter):
"""
Improved list_filter display for parent Pages by nicely indenting hierarchy
In theory this would work with any mptt model which uses a "title"
attribute.
my_model_field.page_parent_filter = True
"""
def __init__(self, field, request, params, model, model_admin, field_path=None):
super().__init__(field, request, params, model, model_admin, field_path)
parent_ids = (
model.objects.exclude(parent=None)
.values_list("parent__id", flat=True)
.order_by("parent__id")
.distinct()
)
parents = model.objects.filter(pk__in=parent_ids).values_list(
"pk", "title", "level"
)
self.lookup_choices = [
(
pk,
"{}{}".format(
" " * level, shorten_string(title, max_length=25)
),
)
for pk, title, level in parents
]
def choices(self, changelist):
yield {
"selected": self.lookup_val is None,
"query_string": changelist.get_query_string({}, [self.lookup_kwarg]),
"display": _("All"),
}
# Pre Django 5 lookup_val would be a scalar, now it can do multiple
# selections and thus is a list. Deal with that.
lookup_vals = self.lookup_val
if lookup_vals is not None and django.VERSION < (5,):
lookup_vals = [lookup_vals]
for pk, title in self.lookup_choices:
yield {
"selected": lookup_vals is not None and str(pk) in lookup_vals,
"query_string": changelist.get_query_string({self.lookup_kwarg: pk}),
"display": mark_safe(smart_str(title)),
}
def title(self):
return _("Parent")
class CategoryFieldListFilter(ChoicesFieldListFilter):
"""
Customization of ChoicesFilterSpec which sorts in the user-expected format
my_model_field.category_filter = True
"""
def __init__(self, field, *args, **kwargs):
super().__init__(field, *args, **kwargs)
# Restrict results to categories which are actually in use:
related_model = field.remote_field.model
related_name = field.related_query_name()
self.lookup_choices = sorted(
(
(i.pk, f"{i} ({i._related_count})")
for i in related_model.objects.annotate(
_related_count=Count(related_name)
).exclude(_related_count=0)
),
key=itemgetter(1),
)
def choices(self, changelist):
yield {
"selected": self.lookup_val is None,
"query_string": changelist.get_query_string({}, [self.lookup_kwarg]),
"display": _("All"),
}
# Pre Django 5 lookup_val would be a scalar, now it can do multiple
# selections and thus is a list. Deal with that.
lookup_vals = self.lookup_val
if lookup_vals is not None and django.VERSION < (5,):
lookup_vals = [lookup_vals]
for pk, title in self.lookup_choices:
yield {
"selected": lookup_vals is not None and str(pk) in lookup_vals,
"query_string": changelist.get_query_string({self.lookup_kwarg: pk}),
"display": mark_safe(smart_str(title)),
}
def title(self):
return _("Category")