djangocms_blog/djangocms_blog/cms_menus.py
Iacopo Spalletti 429d6bd8f2
Minor addition
2016-05-13 08:54:08 +02:00

161 lines
5.7 KiB
Python

# -*- coding: utf-8 -*-
from __future__ import absolute_import, print_function, unicode_literals
from cms.apphook_pool import apphook_pool
from cms.menu_bases import CMSAttachMenu
from django.core.urlresolvers import resolve
from django.db.models.signals import post_delete, post_save
from django.utils.translation import get_language_from_request, ugettext_lazy as _
from menus.base import Modifier, NavigationNode
from menus.menu_pool import menu_pool
from .cms_appconfig import BlogConfig
from .models import BlogCategory, Post
from .settings import MENU_TYPE_CATEGORIES, MENU_TYPE_COMPLETE, MENU_TYPE_POSTS, get_setting
try:
from django.contrib.sites.shortcuts import get_current_site
except ImportError:
from django.contrib.sites.models import get_current_site
class BlogCategoryMenu(CMSAttachMenu):
"""
Main menu class
Handles all types of blog menu
"""
name = _('Blog menu')
def get_nodes(self, request):
"""
Generates the nodelist
:param request:
:return: list of nodes
"""
nodes = []
language = get_language_from_request(request, check_path=True)
current_site = get_current_site(request)
if self.instance.site != current_site:
return []
categories_menu = False
posts_menu = False
config = False
if hasattr(self, 'instance') and self.instance:
config = BlogConfig.objects.get(namespace=self.instance.application_namespace)
if config and config.menu_structure in (MENU_TYPE_COMPLETE, MENU_TYPE_CATEGORIES):
categories_menu = True
if config and config.menu_structure in (MENU_TYPE_COMPLETE, MENU_TYPE_POSTS):
posts_menu = True
if categories_menu:
categories = BlogCategory.objects
if config:
categories = categories.namespace(self.instance.application_namespace)
categories = categories.active_translations(language).distinct()
categories = categories.order_by('parent__id', 'translations__name')
for category in categories:
node = NavigationNode(
category.name,
category.get_absolute_url(),
'{0}-{1}'.format(category.__class__.__name__, category.pk),
(
'{0}-{1}'.format(
category.__class__.__name__, category.parent.id
) if category.parent else None
)
)
nodes.append(node)
if posts_menu:
posts = Post.objects
if hasattr(self, 'instance') and self.instance:
posts = posts.namespace(self.instance.application_namespace)
posts = posts.active_translations(language).distinct()
for post in posts:
post_id = None
parent = None
if categories_menu:
category = post.categories.first()
if category:
parent = '{0}-{1}'.format(category.__class__.__name__, category.pk)
post_id = '{0}-{1}'.format(post.__class__.__name__, post.pk),
else:
post_id = '{0}-{1}'.format(post.__class__.__name__, post.pk),
if post_id:
node = NavigationNode(
post.get_title(),
post.get_absolute_url(language),
post_id,
parent
)
nodes.append(node)
return nodes
menu_pool.register_menu(BlogCategoryMenu)
class BlogNavModifier(Modifier):
"""
This navigation modifier makes sure that when
a particular blog post is viewed,
a corresponding category is selected in menu
"""
def modify(self, request, nodes, namespace, root_id, post_cut, breadcrumb):
"""
Actual modifier function
:param request: request
:param nodes: complete list of nodes
:param namespace: Menu namespace
:param root_id: eventual root_id
:param post_cut: flag for modifier stage
:param breadcrumb: flag for modifier stage
:return: nodeslist
"""
app = None
config = None
if getattr(request, 'current_page', None) and request.current_page.application_urls:
app = apphook_pool.get_apphook(request.current_page.application_urls)
if app and app.app_config:
namespace = resolve(request.path).namespace
config = app.get_config(namespace)
try:
if config and (
not isinstance(config, BlogConfig) or
config.menu_structure != MENU_TYPE_CATEGORIES
):
return nodes
except AttributeError: # pragma: no cover
# in case `menu_structure` is not present in config
return nodes
if post_cut:
return nodes
current_post = getattr(request, get_setting('CURRENT_POST_IDENTIFIER'), None)
category = None
if current_post and current_post.__class__ == Post:
category = current_post.categories.first()
if not category:
return nodes
for node in nodes:
if '{0}-{1}'.format(category.__class__.__name__, category.pk) == node.id:
node.selected = True
return nodes
menu_pool.register_modifier(BlogNavModifier)
def clear_menu_cache(**kwargs):
"""
Empty menu cache when saving categories
"""
menu_pool.clear(all=True)
post_save.connect(clear_menu_cache, sender=BlogCategory)
post_delete.connect(clear_menu_cache, sender=BlogCategory)