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