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''' Created on 17.10.2011 @author: xaralis ''' from django.http import HttpResponsePermanentRedirect from ella.core.views import ObjectDetail """ A little bit of Python black magic. In order to have some defaults in all Publishable details, replace get_context method in Ella's ObjectDetail. Keep original data (using orig_get_context) and add defaults for contents. Then, replace the method on ObjectDetail class. """ orig_get_context = ObjectDetail.get_context def get_context(self, request, category, content_type, slug, year, month, day): ctx = orig_get_context(self, request, category, content_type, slug, year, month, day) ctx.update({ 'content': None, 'content_list': [], 'content_index': 0, 'content_count': 0, 'next_content_index': None, 'prev_content_index': None, 'has_next_content': False, 'has_prev_content': False, 'has_some_content': False, }) return ctx ObjectDetail.get_context = get_context class ArticleDetail(ObjectDetail): """ Article detail that adds possibility to show splitted contents. Shows first page/first content available. Adds following variables to template context: `content` current content to show `content_list` list of marked-up contents available for the article `content_index` index of current contnt `content_count` total number of available contents `next_content_index` next content index or None if this is the last content `prev_content_index` previous content index or None if this is the first content `has_next_content` True if this isn't the last content `has_prev_content` True if this isn't the first content `has_some_content` True if some content is available """ def prepare_content_context(self, article, page): content_count = article.get_content_count() return { 'content': article.get_content(page - 1), 'content_list': article.get_contents(), 'content_index': page, 'content_count': content_count, 'next_content_index': page + 1 if page + 1 <= content_count else None, 'prev_content_index': page - 1 if page - 1 > 0 else None, 'has_next_content': content_count > page, 'has_prev_content': page > 1, 'has_some_content': content_count != 0, } def render_page(self, request, context, page): article = context['object'] context.update(self.prepare_content_context(article, page)) return self.render(request, context, self.get_templates(context)) def __call__(self, request, context): return self.render_page(request, context, 1) article_detail = ArticleDetail() class ArticlePage(ArticleDetail): """ Handles browsing of given article page. Populates template context by same variables as ArticleDetail. When first page is requested, permanent redirect is made to the base page -> ArticleDetail. """ def __call__(self, request, context, page): if int(page) == 1: return HttpResponsePermanentRedirect(context['object'].get_absolute_url()) return self.render_page(request, context, int(page)) article_page = ArticlePage()