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"""Default example views""" |
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from pages import settings |
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from pages.models import Page, PageAlias |
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from pages.phttp import get_language_from_request, remove_slug |
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from pages.urlconf_registry import get_urlconf |
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from pages.utils import get_placeholders |
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from django.http import Http404, HttpResponsePermanentRedirect |
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from django.contrib.sitemaps import Sitemap |
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from django.core.urlresolvers import resolve, Resolver404 |
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from django.utils import translation |
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from django.shortcuts import render |
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LANGUAGE_KEYS = [key for (key, value) in settings.PAGE_LANGUAGES] |
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class Details(object): |
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""" |
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This class based view get the root pages for navigation |
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and the current page to display if there is any. |
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All is rendered with the current page's template. |
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""" |
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def __call__( |
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self, request, path=None, lang=None, delegation=True, |
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**kwargs): |
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current_page = False |
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if path is None: |
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raise ValueError( |
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"pages.views.Details class view requires the path argument. " |
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"Check your urls.py file.") |
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# for the ones that might have forgotten to pass the language |
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# the language is now removed from the page path |
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if settings.PAGE_USE_LANGUAGE_PREFIX and lang is None: |
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maybe_lang = path.split("/")[0] |
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if maybe_lang in LANGUAGE_KEYS: |
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lang = maybe_lang |
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path = path[(len(lang) + 1):] |
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lang = self.choose_language(lang, request) |
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pages_navigation = self.get_navigation(request, path, lang) |
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context = { |
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'path': path, |
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'pages_navigation': pages_navigation, |
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'lang': lang, |
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} |
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is_staff = self.is_user_staff(request) |
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current_page = self.resolve_page(request, context, is_staff) |
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# Do redirect to new page (if enabled) |
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if settings.PAGE_REDIRECT_OLD_SLUG and current_page: |
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url = current_page.get_absolute_url(language=lang) |
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slug = current_page.get_complete_slug(language=lang) |
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current_url = request.get_full_path() |
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if url != path and url + '/' != current_url and slug != path: |
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return HttpResponsePermanentRedirect(url) |
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# if no pages has been found, we will try to find it via an Alias |
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if not current_page: |
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redirection = self.resolve_alias(request, path, lang) |
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if redirection: |
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return redirection |
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else: |
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context['current_page'] = current_page |
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# If unauthorized to see the pages, raise a 404, That can |
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# happen with expired pages. |
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if not is_staff and not current_page.visible: |
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raise Http404 |
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redirection = self.resolve_redirection(request, context) |
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if redirection: |
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return redirection |
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self.extra_context(request, context) |
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if delegation and current_page.delegate_to: |
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answer = self.delegate(request, context, delegation, **kwargs) |
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if answer: |
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return answer |
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if kwargs.get('only_context', False): |
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return context |
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template_name = kwargs.get( |
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'template_name', |
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self.get_template(request, context)) |
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context['template_name'] = template_name |
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return render(request, template_name, context) |
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def resolve_page(self, request, context, is_staff): |
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"""Return the appropriate page according to the path.""" |
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path = context['path'] |
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lang = context['lang'] |
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page = Page.objects.from_path( |
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path, lang, |
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exclude_drafts=(not is_staff)) |
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if page: |
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return page |
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# if the complete path didn't worked out properly |
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# and if didn't used PAGE_USE_STRICT_URL setting we gonna |
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# try to see if it might be a delegation page. |
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# To do that we remove the right part of the url and try again |
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# to find a page that match |
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if not settings.PAGE_USE_STRICT_URL: |
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path = remove_slug(path) |
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while path is not None: |
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page = Page.objects.from_path( |
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path, lang, |
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exclude_drafts=(not is_staff)) |
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# find a match. Is the page delegating? |
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if page: |
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if page.delegate_to: |
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return page |
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path = remove_slug(path) |
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return None |
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def resolve_alias(self, request, path, lang): |
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alias = PageAlias.objects.from_path(request, path, lang) |
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if alias: |
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url = alias.page.get_url_path(lang) |
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return HttpResponsePermanentRedirect(url) |
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raise Http404 |
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def resolve_redirection(self, request, context): |
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"""Check for redirections.""" |
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current_page = context['current_page'] |
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lang = context['lang'] |
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if current_page.redirect_to_url: |
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return HttpResponsePermanentRedirect(current_page.redirect_to_url) |
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if current_page.redirect_to: |
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return HttpResponsePermanentRedirect( |
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current_page.redirect_to.get_url_path(lang)) |
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def get_navigation(self, request, path, lang): |
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"""Get the pages that are at the root level.""" |
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return Page.objects.navigation().order_by("tree_id") |
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def choose_language(self, lang, request): |
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"""Deal with the multiple corner case of choosing the language.""" |
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# Can be an empty string or None |
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if not lang: |
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lang = get_language_from_request(request) |
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# Raise a 404 if the language is not in not in the list |
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if lang not in [key for (key, value) in settings.PAGE_LANGUAGES]: |
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raise Http404 |
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# We're going to serve CMS pages in language lang; |
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# make django gettext use that language too |
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if lang and translation.check_for_language(lang): |
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translation.activate(lang) |
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return lang |
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def get_template(self, request, context): |
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"""Just there in case you have special business logic.""" |
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return context['current_page'].get_template() |
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def is_user_staff(self, request): |
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"""Return True if the user is staff.""" |
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return request.user.is_authenticated() and request.user.is_staff |
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def extra_context(self, request, context): |
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"""Call the PAGE_EXTRA_CONTEXT function if there is one.""" |
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if settings.PAGE_EXTRA_CONTEXT: |
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context.update(settings.PAGE_EXTRA_CONTEXT()) |
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def delegate(self, request, context, delegation=True): |
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# if there is a delegation to another view, |
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# call this view instead. |
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current_page = context['current_page'] |
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path = context['path'] |
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delegate_path = path.replace( |
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current_page.get_complete_slug(hideroot=False), "") |
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# it seems that the urlconf path have to start with a slash |
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if len(delegate_path) == 0: |
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delegate_path = "/" |
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if delegate_path.startswith("//"): |
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delegate_path = delegate_path[1:] |
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urlconf = get_urlconf(current_page.delegate_to) |
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try: |
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result = resolve(delegate_path, urlconf) |
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except Resolver404: |
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raise Http404 |
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if result: |
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view, args, kwargs = result |
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kwargs.update(context) |
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# for now the view is called as is. |
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return view(request, *args, **kwargs) |
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# The Details view instance. It's the same object for |
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# everybody so be careful to maintain it thread safe. |
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# ie: NO self.attribute = something |
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details = Details() |
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class PageSitemap(Sitemap): |
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"""This site map implementation expose the pages |
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in the default language only.""" |
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changefreq = "weekly" |
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priority = 0.5 |
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def items(self): |
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return Page.objects.published() |
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def lastmod(self, obj): |
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return obj.last_modification_date |
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class PageItemProxy(object): |
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def __init__(self, page, lang): |
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self.page = page |
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self.lang = lang |
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def get_absolute_url(self): |
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return self.page.get_absolute_url(language=self.lang) |
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class MultiLanguagePageSitemap(Sitemap): |
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"""This site map implementation expose the pages |
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in all the languages.""" |
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changefreq = "weekly" |
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priority = 0.5 |
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def items(self): |
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item_list = [] |
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for page in Page.objects.published(): |
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for lang in page.get_languages(): |
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item_list.append(PageItemProxy(page, lang)) |
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return item_list |
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def lastmod(self, obj): |
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return obj.page.last_modification_date |
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