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from __future__ import unicode_literals
try:
from itertools import zip_longest
except ImportError:
from itertools import izip_longest as zip_longest
from django.template import Library
from django.utils.http import urlencode
from ...product.filters import DEFAULT_SORT
register = Library()
@register.filter
def slice(items, group_size=1):
args = [iter(items)] * group_size
return (filter(None, group)
for group in zip_longest(*args, fillvalue=None))
@register.simple_tag(takes_context=True)
def get_sort_by_url(context, field, descending=False):
request = context['request']
request_get = request.GET.dict()
if descending:
request_get['sort_by'] = '-' + field
else:
request_get['sort_by'] = field
return '%s?%s' % (request.path, urlencode(request_get))
@register.inclusion_tag('category/_sort_by.html', takes_context=True)
def sort_by(context, attributes):
ctx = {
'request': context['request'],
'sort_by': (context['request'].GET.get('sort_by', DEFAULT_SORT)
.strip('-')),
'sort_by_choices': attributes,
'arrow_down': (context['request'].GET.get('sort_by', DEFAULT_SORT)
.startswith('-'))}
return ctx
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