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- from urllib.parse import parse_qsl, unquote, urlparse, urlunparse
-
- from django import template
- from django.contrib.admin.utils import quote
- from django.urls import Resolver404, get_script_prefix, resolve
- from django.utils.http import urlencode
-
- register = template.Library()
-
-
- @register.filter
- def admin_urlname(value, arg):
- return 'admin:%s_%s_%s' % (value.app_label, value.model_name, arg)
-
-
- @register.filter
- def admin_urlquote(value):
- return quote(value)
-
-
- @register.simple_tag(takes_context=True)
- def add_preserved_filters(context, url, popup=False, to_field=None):
- opts = context.get('opts')
- preserved_filters = context.get('preserved_filters')
-
- parsed_url = list(urlparse(url))
- parsed_qs = dict(parse_qsl(parsed_url[4]))
- merged_qs = {}
-
- if opts and preserved_filters:
- preserved_filters = dict(parse_qsl(preserved_filters))
-
- match_url = '/%s' % unquote(url).partition(get_script_prefix())[2]
- try:
- match = resolve(match_url)
- except Resolver404:
- pass
- else:
- current_url = '%s:%s' % (match.app_name, match.url_name)
- changelist_url = 'admin:%s_%s_changelist' % (opts.app_label, opts.model_name)
- if changelist_url == current_url and '_changelist_filters' in preserved_filters:
- preserved_filters = dict(parse_qsl(preserved_filters['_changelist_filters']))
-
- merged_qs.update(preserved_filters)
-
- if popup:
- from django.contrib.admin.options import IS_POPUP_VAR
- merged_qs[IS_POPUP_VAR] = 1
- if to_field:
- from django.contrib.admin.options import TO_FIELD_VAR
- merged_qs[TO_FIELD_VAR] = to_field
-
- merged_qs.update(parsed_qs)
-
- parsed_url[4] = urlencode(merged_qs)
- return urlunparse(parsed_url)
|
