Pagination updates

[osqa.git] / forum / views / readers.py

diff --git a/forum/views/readers.py b/forum/views/readers.py
index e6afdfe33a2edff99cd91a7addc6195e1209d6c9..e7336e01fe9b45b43ef21e1c913bd730e6e11581 100644 (file)
--- a/forum/views/readers.py
+++ b/forum/views/readers.py
@@ -2,197 +2,324 @@
 import datetime
 import logging
 from urllib import unquote
 import datetime
 import logging
 from urllib import unquote

-from forum import settings as django_settings

 from django.shortcuts import render_to_response, get_object_or_404
 from django.shortcuts import render_to_response, get_object_or_404

-from django.http import HttpResponseRedirect, HttpResponse, HttpResponseForbidden, Http404, HttpResponsePermanentRedirect
+from django.http import HttpResponseRedirect, Http404, HttpResponsePermanentRedirect

 from django.core.paginator import Paginator, EmptyPage, InvalidPage
 from django.template import RequestContext
 from django import template
 from django.utils.html import *
 from django.core.paginator import Paginator, EmptyPage, InvalidPage
 from django.template import RequestContext
 from django import template
 from django.utils.html import *

-from django.utils import simplejson
-from django.db.models import Q
+from django.db.models import Q, Count

 from django.utils.translation import ugettext as _
 from django.utils.translation import ugettext as _

-from django.template.defaultfilters import slugify

 from django.core.urlresolvers import reverse
 from django.core.urlresolvers import reverse

-from django.utils.datastructures import SortedDict
-from django.views.decorators.cache import cache_page
-from django.utils.http import urlquote  as django_urlquote

 from django.template.defaultfilters import slugify
 from django.utils.safestring import mark_safe
 
 from django.template.defaultfilters import slugify
 from django.utils.safestring import mark_safe
 

-from forum.utils.html import sanitize_html
+from forum import settings as django_settings
+from forum.utils.html import hyperlink

 from forum.utils.diff import textDiff as htmldiff
 from forum.utils.diff import textDiff as htmldiff

+from forum.utils import pagination

 from forum.forms import *
 from forum.models import *
 from forum.forms import *
 from forum.models import *

-from forum.utils.forms import get_next_url

 from forum.actions import QuestionViewAction
 from forum.actions import QuestionViewAction

-from forum.modules.decorators import decoratable
+from forum.http_responses import HttpResponseUnauthorized
+from forum.feed import RssQuestionFeed, RssAnswerFeed
+from forum.utils.pagination import generate_uri
+

 import decorators
 
 import decorators
 

-# used in index page
-#refactor - move these numbers somewhere?
-INDEX_PAGE_SIZE = 30
-INDEX_AWARD_SIZE = 15
-INDEX_TAGS_SIZE = 25
-# used in tags list
-DEFAULT_PAGE_SIZE = 60
-# used in questions
-QUESTIONS_PAGE_SIZE = 30
-# used in answers
-ANSWERS_PAGE_SIZE = 10
+class HottestQuestionsSort(pagination.SortBase):
+    def apply(self, questions):
+        return questions.extra(select={'new_child_count': '''
+            SELECT COUNT(1)
+                FROM forum_node fn1
+                WHERE fn1.abs_parent_id = forum_node.id
+                    AND fn1.id != forum_node.id
+                    AND NOT(fn1.state_string LIKE '%%(deleted)%%')
+                    AND added_at > %s'''
+            },
+            select_params=[ (datetime.datetime.now() - datetime.timedelta(days=2))
+                .strftime('%Y-%m-%d')]
+        ).order_by('-new_child_count', 'last_activity_at')
+
+class UnansweredQuestionsSort(pagination.SortBase):
+    def apply(self, questions):
+        return questions.extra(select={'answer_count': '''
+            SELECT COUNT(1)
+                FROM forum_node fn1
+                WHERE fn1.abs_parent_id = forum_node.id
+                    AND fn1.id != forum_node.id
+                    AND fn1.node_type='answer'
+                    AND NOT(fn1.state_string LIKE '%%(deleted)%%')'''
+            }).order_by('answer_count', 'last_activity_at')
+
+class QuestionListPaginatorContext(pagination.PaginatorContext):
+    def __init__(self, id='QUESTIONS_LIST', prefix='', pagesizes=(15, 30, 50), default_pagesize=30):
+        super (QuestionListPaginatorContext, self).__init__(id, sort_methods=(
+            (_('active'), pagination.SimpleSort(_('active'), '-last_activity_at', _("Most <strong>recently updated</strong> questions"))),
+            (_('newest'), pagination.SimpleSort(_('newest'), '-added_at', _("most <strong>recently asked</strong> questions"))),
+            (_('hottest'), HottestQuestionsSort(_('hottest'), _("most <strong>active</strong> questions in the last 24 hours</strong>"))),
+            (_('mostvoted'), pagination.SimpleSort(_('most voted'), '-score', _("most <strong>voted</strong> questions"))),
+            (_('unanswered'), UnansweredQuestionsSort('unanswered', "questions with no answers")),
+        ), pagesizes=pagesizes, default_pagesize=default_pagesize, prefix=prefix)
+
+class AnswerSort(pagination.SimpleSort):
+    def apply(self, answers):
+        if not settings.DISABLE_ACCEPTING_FEATURE:
+            return answers.order_by(*(['-marked'] + list(self._get_order_by())))
+        else:
+            return super(AnswerSort, self).apply(answers)
+
+class AnswerPaginatorContext(pagination.PaginatorContext):
+    def __init__(self, id='ANSWER_LIST', prefix='', default_pagesize=10):
+        super (AnswerPaginatorContext, self).__init__(id, sort_methods=(
+            (_('active'), AnswerSort(_('active answers'), '-last_activity_at', _("most recently updated answers/comments will be shown first"))),
+            (_('oldest'), AnswerSort(_('oldest answers'), 'added_at', _("oldest answers will be shown first"))),
+            (_('newest'), AnswerSort(_('newest answers'), '-added_at', _("newest answers will be shown first"))),
+            (_('votes'), AnswerSort(_('popular answers'), ('-score', 'added_at'), _("most voted answers will be shown first"))),
+        ), default_sort=_('votes'), pagesizes=(5, 10, 20), default_pagesize=default_pagesize, prefix=prefix)
+
+class TagPaginatorContext(pagination.PaginatorContext):
+    def __init__(self):
+        super (TagPaginatorContext, self).__init__('TAG_LIST', sort_methods=(
+            (_('name'), pagination.SimpleSort(_('by name'), 'name', _("sorted alphabetically"))),
+            (_('used'), pagination.SimpleSort(_('by popularity'), '-used_count', _("sorted by frequency of tag use"))),
+        ), default_sort=_('used'), pagesizes=(30, 60, 120))
+    
+
+def feed(request):
+    return RssQuestionFeed(
+                request,
+                Question.objects.filter_state(deleted=False).order_by('-last_activity_at'),
+                settings.APP_TITLE + _(' - ')+ _('latest questions'),
+                settings.APP_DESCRIPTION)(request)

 
 @decorators.render('index.html')
 def index(request):
 
 @decorators.render('index.html')
 def index(request):

-    return question_list(request, Question.objects.all(), sort='active', base_path=reverse('questions'))
-
-@decorators.render('questions.html', 'unanswered')
+    paginator_context = QuestionListPaginatorContext()
+    paginator_context.base_path = reverse('questions')
+    return question_list(request,
+                         Question.objects.all(),
+                         base_path=reverse('questions'),
+                         feed_url=reverse('latest_questions_feed'),
+                         paginator_context=paginator_context)
+
+@decorators.render('questions.html', 'unanswered', _('unanswered'), weight=400)

 def unanswered(request):
 def unanswered(request):

-    return question_list(request, Question.objects.filter(extra_ref=None),
-                         _('Open questions without an accepted answer'),
-                         'active', None, _("Unanswered questions"))
+    return question_list(request,
+                         Question.objects.exclude(id__in=Question.objects.filter(children__marked=True).distinct()).exclude(marked=True),
+                         _('open questions without an accepted answer'),
+                         None,
+                         _("Unanswered Questions"))

 
 

-@decorators.render('questions.html', 'questions')
+@decorators.render('questions.html', 'questions', _('questions'), weight=0)

 def questions(request):
 def questions(request):

-    return question_list(request, Question.objects.all(), _('questions'), 'active')
+    return question_list(request,
+                         Question.objects.all(),
+                         _('questions'))

 
 @decorators.render('questions.html')
 def tag(request, tag):
 
 @decorators.render('questions.html')
 def tag(request, tag):

-    return question_list(request, Question.objects.filter(tags__name=unquote(tag)),
-                        mark_safe(_('Questions tagged <span class="tag">%(tag)s</span>') % {'tag': tag}),
-                        'active',
-                        None,
-                        mark_safe(_('Questions tagged %(tag)s') % {'tag': tag}),
-                        False)
+    try:
+        tag = Tag.active.get(name=unquote(tag))
+    except Tag.DoesNotExist:
+        raise Http404

 
 

-@decorators.list('questions', QUESTIONS_PAGE_SIZE)
-def question_list(request, initial, list_description=_('questions'), sort=None, base_path=None, page_title=None, allowIgnoreTags=True):
-    questions = initial.filter(deleted=None, in_moderation=None)
+    # Getting the questions QuerySet
+    questions = Question.objects.filter(tags__id=tag.id)

 
 

-    test = request.user.marked_tags
+    if request.method == "GET":
+        user = request.GET.get('user', None)
+
+        if user is not None:
+            try:
+                questions = questions.filter(author=User.objects.get(username=user))
+            except User.DoesNotExist:
+                raise Http404
+
+    # The extra tag context we need to pass
+    tag_context = {
+        'tag' : tag,
+    }
+
+    # The context returned by the question_list function, contains info about the questions
+    question_context = question_list(request,
+                         questions,
+                         mark_safe(_(u'questions tagged <span class="tag">%(tag)s</span>') % {'tag': tag}),
+                         None,
+                         mark_safe(_(u'Questions Tagged With %(tag)s') % {'tag': tag}),
+                         False)
+
+    # If the return data type is not a dict just return it
+    if not isinstance(question_context, dict):
+        return question_context
+
+    question_context = dict(question_context)
+
+    # Create the combined context
+    context = dict(question_context.items() + tag_context.items())
+
+    return context
+
+@decorators.render('questions.html', 'questions', tabbed=False)
+def user_questions(request, mode, user, slug):
+    user = get_object_or_404(User, id=user)
+
+    if mode == _('asked-by'):
+        questions = Question.objects.filter(author=user)
+        description = _("Questions asked by %s")
+    elif mode == _('answered-by'):
+        questions = Question.objects.filter(children__author=user, children__node_type='answer').distinct()
+        description = _("Questions answered by %s")
+    elif mode == _('subscribed-by'):
+        if not (request.user.is_superuser or request.user == user):
+            return HttpResponseUnauthorized(request)
+        questions = user.subscriptions
+
+        if request.user == user:
+            description = _("Questions you subscribed %s")
+        else:
+            description = _("Questions subscribed by %s")
+    else:
+        raise Http404

 
 

-    if request.user.is_authenticated() and allowIgnoreTags:
-        questions = questions.filter(~Q(tags__id__in = request.user.marked_tags.filter(user_selections__reason = 'bad')))

 
 

-    if sort is not False:
-        if sort is None:
-            sort = request.utils.sort_method('latest')
-        else:
-            request.utils.set_sort_method(sort)
+    return question_list(request, questions,
+                         mark_safe(description % hyperlink(user.get_profile_url(), user.username)),
+                         page_title=description % user.username)
+
+def question_list(request, initial,
+                  list_description=_('questions'),
+                  base_path=None,
+                  page_title=_("All Questions"),
+                  allowIgnoreTags=True,
+                  feed_url=None,
+                  paginator_context=None,
+                  show_summary=None,
+                  feed_sort=('-added_at',),
+                  feed_req_params_exclude=(_('page'), _('pagesize'), _('sort')),
+                  extra_context={}):

 
 

-        view_dic = {"latest":"-added_at", "active":"-last_activity_at", "hottest":"-extra_count", "mostvoted":"-score" }
+    if show_summary is None:
+        show_summary = bool(settings.SHOW_SUMMARY_ON_QUESTIONS_LIST)

 
 

-        questions=questions.order_by(view_dic.get(sort, '-added_at'))
+    questions = initial.filter_state(deleted=False)
+
+    if request.user.is_authenticated() and allowIgnoreTags:
+        questions = questions.filter(~Q(tags__id__in = request.user.marked_tags.filter(user_selections__reason = 'bad')))

 
     if page_title is None:
         page_title = _("Questions")
 
 
     if page_title is None:
         page_title = _("Questions")
 

-    return {
-        "questions" : questions,
-        "questions_count" : questions.count(),
-        #"tags_autocomplete" : _get_tags_cache_json(),
-        "list_description": list_description,
-        "base_path" : base_path,
-        "page_title" : page_title,
-        }
+    if request.GET.get('type', None) == 'rss':
+        if feed_sort:
+            questions = questions.order_by(*feed_sort)
+        return RssQuestionFeed(request, questions, page_title, list_description)(request)
+
+    keywords =  ""
+    if request.GET.get("q"):
+        keywords = request.GET.get("q").strip()
+
+    #answer_count = Answer.objects.filter_state(deleted=False).filter(parent__in=questions).count()
+    #answer_description = _("answers")
+
+    if not feed_url:
+        req_params = generate_uri(request.GET, feed_req_params_exclude)
+
+        if req_params:
+            req_params = '&' + req_params
+
+        feed_url = request.path + "?type=rss" + req_params
+
+    context = {
+        'questions' : questions.distinct(),
+        'questions_count' : questions.count(),
+        'keywords' : keywords,
+        'list_description': list_description,
+        'base_path' : base_path,
+        'page_title' : page_title,
+        'tab' : 'questions',
+        'feed_url': feed_url,
+        'show_summary' : show_summary,
+    }
+    context.update(extra_context)
+
+    return pagination.paginated(request,
+                               ('questions', paginator_context or QuestionListPaginatorContext()), context)

 
 
 def search(request):
     if request.method == "GET" and "q" in request.GET:
         keywords = request.GET.get("q")
         search_type = request.GET.get("t")
 
 
 def search(request):
     if request.method == "GET" and "q" in request.GET:
         keywords = request.GET.get("q")
         search_type = request.GET.get("t")

-        
+

         if not keywords:
             return HttpResponseRedirect(reverse(index))
         if search_type == 'tag':
         if not keywords:
             return HttpResponseRedirect(reverse(index))
         if search_type == 'tag':

-            return HttpResponseRedirect(reverse('tags') + '?q=%s' % (keywords.strip()))
+            return HttpResponseRedirect(reverse('tags') + '?q=%s' % urlquote(keywords.strip()))

         elif search_type == "user":
         elif search_type == "user":

-            return HttpResponseRedirect(reverse('users') + '?q=%s' % (keywords.strip()))
-        elif search_type == "question":
+            return HttpResponseRedirect(reverse('users') + '?q=%s' % urlquote(keywords.strip()))
+        else:

             return question_search(request, keywords)
     else:
         return render_to_response("search.html", context_instance=RequestContext(request))
 
             return question_search(request, keywords)
     else:
         return render_to_response("search.html", context_instance=RequestContext(request))
 

-@decoratable
-def do_question_search(keywords):
-    return Question.objects.filter(Q(title__icontains=keywords) | Q(body__icontains=keywords))
-

 @decorators.render('questions.html')
 def question_search(request, keywords):
 @decorators.render('questions.html')
 def question_search(request, keywords):

-    initial = do_question_search(keywords)
+    rank_feed = False
+    can_rank, initial = Question.objects.search(keywords)

 
 

-    return question_list(request, initial, _("questions matching '%(keywords)s'") % {'keywords': keywords},
-            base_path="%s?t=question&q=%s" % (reverse('search'), django_urlquote(keywords)), sort=False)
-    
+    if can_rank:
+        sort_order = None
+
+        if isinstance(can_rank, basestring):
+            sort_order = can_rank
+            rank_feed = True
+
+        paginator_context = QuestionListPaginatorContext()
+        paginator_context.sort_methods[_('ranking')] = pagination.SimpleSort(_('relevance'), sort_order, _("most relevant questions"))
+        paginator_context.force_sort = _('ranking')
+    else:
+        paginator_context = None

 
 

-def tags(request):#view showing a listing of available tags - plain list
+    feed_url = mark_safe(escape(request.path + "?type=rss&q=" + keywords))
+
+    return question_list(request, initial,
+                         _("questions matching '%(keywords)s'") % {'keywords': keywords},
+                         None,
+                         _("questions matching '%(keywords)s'") % {'keywords': keywords},
+                         paginator_context=paginator_context,
+                         feed_url=feed_url, feed_sort=rank_feed and (can_rank,) or '-added_at')
+
+
+@decorators.render('tags.html', 'tags', _('tags'), weight=100)
+def tags(request):

     stag = ""
     stag = ""

-    is_paginated = True
-    sortby = request.GET.get('sort', 'used')
-    try:
-        page = int(request.GET.get('page', '1'))
-    except ValueError:
-        page = 1
+    tags = Tag.active.all()

 
     if request.method == "GET":
         stag = request.GET.get("q", "").strip()
 
     if request.method == "GET":
         stag = request.GET.get("q", "").strip()

-        if stag != '':
-            objects_list = Paginator(Tag.objects.filter(deleted=False).exclude(used_count=0).extra(where=['name like %s'], params=['%' + stag + '%']), DEFAULT_PAGE_SIZE)
-        else:
-            if sortby == "name":
-                objects_list = Paginator(Tag.objects.all().filter(deleted=False).exclude(used_count=0).order_by("name"), DEFAULT_PAGE_SIZE)
-            else:
-                objects_list = Paginator(Tag.objects.all().filter(deleted=False).exclude(used_count=0).order_by("-used_count"), DEFAULT_PAGE_SIZE)
+        if stag:
+            tags = tags.filter(name__icontains=stag)

 
 

-    try:
-        tags = objects_list.page(page)
-    except (EmptyPage, InvalidPage):
-        tags = objects_list.page(objects_list.num_pages)
-
-    return render_to_response('tags.html', {
-                                            "tags" : tags,
-                                            "stag" : stag,
-                                            "tab_id" : sortby,
-                                            "keywords" : stag,
-                                            "context" : {
-                                                'is_paginated' : is_paginated,
-                                                'pages': objects_list.num_pages,
-                                                'page': page,
-                                                'has_previous': tags.has_previous(),
-                                                'has_next': tags.has_next(),
-                                                'previous': tags.previous_page_number(),
-                                                'next': tags.next_page_number(),
-                                                'base_url' : reverse('tags') + '?sort=%s&' % sortby
-                                            }
-                                }, context_instance=RequestContext(request))
-
-def get_answer_sort_order(request):
-    view_dic = {"latest":"-added_at", "oldest":"added_at", "votes":"-score" }
-
-    view_id = request.GET.get('sort', request.session.get('answer_sort_order', None))
-
-    if view_id is None or not view_id in view_dic:
-        view_id = "votes"
-
-    if view_id != request.session.get('answer_sort_order', None):
-        request.session['answer_sort_order'] = view_id
-
-    return (view_id, view_dic[view_id])
+    return pagination.paginated(request, ('tags', TagPaginatorContext()), {
+        "tags" : tags,
+        "stag" : stag,
+        "keywords" : stag
+    })

 
 def update_question_view_times(request, question):
 
 def update_question_view_times(request, question):

-    if not 'last_seen_in_question' in request.session:
-        request.session['last_seen_in_question'] = {}
+    last_seen_in_question = request.session.get('last_seen_in_question', {})

 
 

-    last_seen = request.session['last_seen_in_question'].get(question.id,None)
+    last_seen = last_seen_in_question.get(question.id, None)

 
 

-    if (not last_seen) or last_seen < question.last_activity_at:
+    if (not last_seen) or (last_seen < question.last_activity_at):

         QuestionViewAction(question, request.user, ip=request.META['REMOTE_ADDR']).save()
         QuestionViewAction(question, request.user, ip=request.META['REMOTE_ADDR']).save()

-        request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
+        last_seen_in_question[question.id] = datetime.datetime.now()
+        request.session['last_seen_in_question'] = last_seen_in_question

 
 

-    request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
-
-def match_question_slug(slug):
+def match_question_slug(id, slug):

     slug_words = slug.split('-')
     slug_words = slug.split('-')

-    qs = Question.objects.filter(node_type="question", title__istartswith=slug_words[0])
+    qs = Question.objects.filter(title__istartswith=slug_words[0])

 
     for q in qs:
         if slug == urlquote(slugify(q.title)):
 
     for q in qs:
         if slug == urlquote(slugify(q.title)):


@@ -200,34 +327,72 @@ def match_question_slug(slug):
 
     return None
 
 
     return None
 

-def question(request, id, slug):
+def answer_redirect(request, answer):
+    pc = AnswerPaginatorContext()
+
+    sort = pc.sort(request)
+
+    if sort == _('oldest'):
+        filter = Q(added_at__lt=answer.added_at)
+    elif sort == _('newest'):
+        filter = Q(added_at__gt=answer.added_at)
+    elif sort == _('votes'):
+        filter = Q(score__gt=answer.score) | Q(score=answer.score, added_at__lt=answer.added_at)
+    else:
+        raise Http404()
+
+    count = answer.question.answers.filter(Q(marked=True) | filter).exclude(state_string="(deleted)").count()
+    pagesize = pc.pagesize(request)
+
+    page = count / pagesize
+    
+    if count % pagesize:
+        page += 1
+        
+    if page == 0:
+        page = 1
+
+    return HttpResponseRedirect("%s?%s=%s&focusedAnswerId=%s#%s" % (
+        answer.question.get_absolute_url(), _('page'), page, answer.id, answer.id))
+
+@decorators.render("question.html", 'questions')
+def question(request, id, slug='', answer=None):

     try:
     try:

-        question = Question.objects.get(node_type="question", id=id)
+        question = Question.objects.get(id=id)

     except:
     except:

-        question = match_question_slug(slug)
-        if question is not None:
-            return HttpResponsePermanentRedirect(question.get_absolute_url())
-        else:
-            raise Http404()
+        if slug:
+            question = match_question_slug(id, slug)
+            if question is not None:
+                return HttpResponseRedirect(question.get_absolute_url())

 
 

-    if slug != urlquote(slugify(question.title)):
-        return HttpResponsePermanentRedirect(question.get_absolute_url())
+        raise Http404()

 
 

-    page = int(request.GET.get('page', 1))
-    view_id, order_by = get_answer_sort_order(request)
-
-    if question.deleted and not request.user.can_view_deleted_post(question):
+    if question.nis.deleted and not request.user.can_view_deleted_post(question):

         raise Http404
 
         raise Http404
 

-    answer_form = AnswerForm(question)
-    answers = request.user.get_visible_answers(question)
+    if request.GET.get('type', None) == 'rss':
+        return RssAnswerFeed(request, question, include_comments=request.GET.get('comments', None) == 'yes')(request)
+
+    if answer:
+        answer = get_object_or_404(Answer, id=answer)
+
+        if (question.nis.deleted and not request.user.can_view_deleted_post(question)) or answer.question != question:
+            raise Http404
+
+        if answer.marked:
+            return HttpResponsePermanentRedirect(question.get_absolute_url())

 
 

-    if answers is not None:
-        answers = [a for a in answers.order_by("-marked", order_by)
-                   if not a.deleted or a.author == request.user]
+        return answer_redirect(request, answer)

 
 

-    objects_list = Paginator(answers, ANSWERS_PAGE_SIZE)
-    page_objects = objects_list.page(page)
+    if settings.FORCE_SINGLE_URL and (slug != slugify(question.title)):
+        return HttpResponsePermanentRedirect(question.get_absolute_url())
+
+    if request.POST:
+        answer_form = AnswerForm(request.POST, user=request.user)
+    else:
+        answer_form = AnswerForm(user=request.user)
+
+    answers = request.user.get_visible_answers(question)

 
     update_question_view_times(request, question)
 
 
     update_question_view_times(request, question)
 


@@ -238,26 +403,20 @@ def question(request, id, slug):
             subscription = False
     else:
         subscription = False
             subscription = False
     else:
         subscription = False

+    try:
+        focused_answer_id = int(request.GET.get("focusedAnswerId", None))
+    except TypeError, ValueError:
+        focused_answer_id = None

 
 

-    return render_to_response('question.html', {
-        "question" : question,
-        "answer" : answer_form,
-        "answers" : page_objects.object_list,
-        "tab_id" : view_id,
-        "similar_questions" : question.get_related_questions(),
-        "subscription": subscription,
-        "context" : {
-            'is_paginated' : True,
-            'pages': objects_list.num_pages,
-            'page': page,
-            'has_previous': page_objects.has_previous(),
-            'has_next': page_objects.has_next(),
-            'previous': page_objects.previous_page_number(),
-            'next': page_objects.next_page_number(),
-            'base_url' : request.path + '?sort=%s&' % view_id,
-            'extend_url' : "#sort-top"
-        }
-        }, context_instance=RequestContext(request))
+    return pagination.paginated(request, ('answers', AnswerPaginatorContext()), {
+    "question" : question,
+    "answer" : answer_form,
+    "answers" : answers,
+    "similar_questions" : question.get_related_questions(),
+    "subscription": subscription,
+    "embed_youtube_videos" : settings.EMBED_YOUTUBE_VIDEOS,
+    "focused_answer_id" : focused_answer_id
+    })

 
 
 REVISION_TEMPLATE = template.loader.get_template('node/revision.html')
 
 
 REVISION_TEMPLATE = template.loader.get_template('node/revision.html')


@@ -265,14 +424,13 @@ REVISION_TEMPLATE = template.loader.get_template('node/revision.html')
 def revisions(request, id):
     post = get_object_or_404(Node, id=id).leaf
     revisions = list(post.revisions.order_by('revised_at'))
 def revisions(request, id):
     post = get_object_or_404(Node, id=id).leaf
     revisions = list(post.revisions.order_by('revised_at'))

-

     rev_ctx = []
 
     for i, revision in enumerate(revisions):
     rev_ctx = []
 
     for i, revision in enumerate(revisions):

-        rev_ctx.append(dict(inst=revision, html=REVISION_TEMPLATE.render(template.Context({
-                'title': revision.title,
-                'html': revision.html,
-                'tags': revision.tagname_list(),
+        rev_ctx.append(dict(inst=revision, html=template.loader.get_template('node/revision.html').render(template.Context({
+        'title': revision.title,
+        'html': revision.html,
+        'tags': revision.tagname_list(),

         }))))
 
         if i > 0:
         }))))
 
         if i > 0:


@@ -284,11 +442,13 @@ def revisions(request, id):
             rev_ctx[i]['summary'] = _('Revision n. %(rev_number)d') % {'rev_number': revision.revision}
         else:
             rev_ctx[i]['summary'] = revision.summary
             rev_ctx[i]['summary'] = _('Revision n. %(rev_number)d') % {'rev_number': revision.revision}
         else:
             rev_ctx[i]['summary'] = revision.summary

-            
+
+    rev_ctx.reverse()
+

     return render_to_response('revisions.html', {
     return render_to_response('revisions.html', {

-                              'post': post,
-                              'revisions': rev_ctx,
-                              }, context_instance=RequestContext(request))
+    'post': post,
+    'revisions': rev_ctx,
+    }, context_instance=RequestContext(request))