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# Patchwork - automated patch tracking system
# Copyright (C) 2008 Jeremy Kerr <jk@ozlabs.org>
#
# SPDX-License-Identifier: GPL-2.0-or-later
from django.conf import settings
from django import template
from django.urls import reverse
from django.urls import NoReverseMatch
from django.utils.encoding import smart_str
from django.utils.html import escape
from patchwork.filters import FILTERS
register = template.Library()
# params to preserve across views
list_params = [c.param for c in FILTERS] + ['order', 'page']
class ListURLNode(template.defaulttags.URLNode):
def __init__(self, kwargs):
super(ListURLNode, self).__init__(None, [], {}, False)
self.params = {}
for (k, v) in kwargs.items():
if k in list_params:
self.params[k] = v
def render(self, context):
view_name = template.Variable('list_view.view').resolve(context)
kwargs = template.Variable('list_view.view_params').resolve(context)
path = None
try:
path = reverse(view_name, args=[], kwargs=kwargs)
except NoReverseMatch:
try:
project_name = settings.SETTINGS_MODULE.split('.')[0]
path = reverse(project_name + '.' + view_name,
args=[], kwargs=kwargs)
except NoReverseMatch:
raise
if path is None:
return ''
params = []
try:
qs_var = template.Variable('list_view.params').resolve(context)
params = dict(qs_var)
except (TypeError, template.VariableDoesNotExist):
pass
for (k, v) in self.params.items():
params[smart_str(k, 'ascii')] = v.resolve(context)
if not params:
return path
return path + '?' + '&'.join(
['%s=%s' % (k, escape(v)) for (k, v) in list(params.items())])
@register.tag
def listurl(parser, token):
bits = token.contents.split(' ', 1)
if not bits:
raise template.TemplateSyntaxError(
"'%s' takes at least one argument (path to a view)" % bits[0])
kwargs = {}
if len(bits) > 1:
for arg in bits[1].split(','):
if '=' in arg:
k, v = arg.split('=', 1)
k = k.strip()
kwargs[k] = parser.compile_filter(v)
else:
raise template.TemplateSyntaxError(
"'%s' requires name=value params" % bits[0])
return ListURLNode(kwargs)
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