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# -*- coding: utf-8 -*-
from django.conf import settings
from django.db.models import Q
import re
APPEND_TO_SLUG = "-copy"
COPY_SLUG_REGEX = re.compile(r'^.*-copy(?:-(\d)*)?$')
def is_valid_page_slug(page, parent, lang, slug, site, path=None):
"""Validates given slug depending on settings.
"""
from cms.models import Title
# Exclude the page with the publisher_state == page.PUBLISHER_STATE_DELETE
qs = Title.objects.filter(page__site=site).exclude(
Q(page=page) |
Q(page=page.publisher_public) |
Q(page__publisher_state=page.PUBLISHER_STATE_DELETE)
)
if settings.USE_I18N:
qs = qs.filter(language=lang)
if parent:
if parent.is_home():
qs = qs.filter(Q(page__parent=parent) |
Q(page__parent__isnull=True))
else:
qs = qs.filter(page__parent=parent)
else:
qs = qs.filter(page__parent__isnull=True)
if page.pk:
qs = qs.exclude(Q(language=lang) & Q(page=page))
if settings.CMS_MODERATOR:
qs = qs.exclude(page__publisher_public=page)
## Check for slugs
if qs.filter(slug=slug).count():
return False
## Check for path
if path and qs.filter(path=path).count():
return False
return True
def get_available_slug(title, new_slug=None):
"""Smart function generates slug for title if current title slug cannot be
used. Appends APPEND_TO_SLUG to slug and checks it again.
(Used in page copy function)
Returns: slug
"""
rewrite_slug = False
slug = new_slug or title.slug
# We need the full path for the title to check for conflicting urls
title.slug = slug
title.update_path()
path = title.path
# This checks for conflicting slugs/overwrite_url, for both published and unpublished pages
# This is a simpler check than in page_resolver.is_valid_url which
# takes into account actually page URL
if not is_valid_page_slug(title.page, title.page.parent, title.language, slug, title.page.site, path):
# add nice copy attribute, first is -copy, then -copy-2, -copy-3, ....
match = COPY_SLUG_REGEX.match(slug)
if match:
try:
next = int(match.groups()[0]) + 1
slug = "-".join(slug.split('-')[:-1]) + "-%d" % next
except TypeError:
slug += "-2"
else:
slug += APPEND_TO_SLUG
return get_available_slug(title, slug)
else:
return slug
def check_title_slugs(page):
"""Checks page title slugs for duplicity if required, used after page move/
cut/paste.
"""
for title in page.title_set.all():
old_slug = title.slug
title.slug = get_available_slug(title)
if title.slug != old_slug:
title.save()
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