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# encoding:utf-8
import datetime
import logging
from urllib import unquote
from django.shortcuts import render_to_response, get_object_or_404
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.db.models import Q, Count
from django.utils.translation import ugettext as _
from django.core.urlresolvers import reverse
from django.template.defaultfilters import slugify
from django.utils.safestring import mark_safe
from forum import settings as django_settings
from forum.utils.html import hyperlink
from forum.utils.diff import textDiff as htmldiff
from forum.utils import pagination
from forum.forms import *
from forum.models import *
from forum.actions import QuestionViewAction
from forum.http_responses import HttpResponseUnauthorized
from forum.feed import RssQuestionFeed, RssAnswerFeed
from forum.utils.pagination import generate_uri
import decorators
class HottestQuestionsSort(pagination.SortBase):
def apply(self, questions):
return questions.annotate(new_child_count=Count('all_children')).filter(
all_children__added_at__gt=datetime.datetime.now() - datetime.timedelta(days=1)).order_by('-new_child_count')
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"))),
), 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=(
(_('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):
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):
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', _('questions'), weight=0)
def questions(request):
return question_list(request,
Question.objects.all(),
_('questions'))
@decorators.render('questions.html')
def tag(request, tag):
try:
tag = Tag.active.get(name=unquote(tag))
except Tag.DoesNotExist:
raise Http404
# Getting the questions QuerySet
questions = Question.objects.filter(tags__id=tag.id)
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
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={}):
if show_summary is None:
show_summary = bool(settings.SHOW_SUMMARY_ON_QUESTIONS_LIST)
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 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")
if not keywords:
return HttpResponseRedirect(reverse(index))
if search_type == 'tag':
return HttpResponseRedirect(reverse('tags') + '?q=%s' % urlquote(keywords.strip()))
elif search_type == "user":
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))
@decorators.render('questions.html')
def question_search(request, keywords):
rank_feed = False
can_rank, initial = Question.objects.search(keywords)
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
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 = ""
tags = Tag.active.all()
if request.method == "GET":
stag = request.GET.get("q", "").strip()
if stag:
tags = tags.filter(name__icontains=stag)
return pagination.paginated(request, ('tags', TagPaginatorContext()), {
"tags" : tags,
"stag" : stag,
"keywords" : stag
})
def update_question_view_times(request, question):
last_seen_in_question = request.session.get('last_seen_in_question', {})
last_seen = last_seen_in_question.get(question.id, None)
if (not last_seen) or (last_seen < question.last_activity_at):
QuestionViewAction(question, request.user, ip=request.META['REMOTE_ADDR']).save()
last_seen_in_question[question.id] = datetime.datetime.now()
request.session['last_seen_in_question'] = last_seen_in_question
def match_question_slug(id, slug):
slug_words = slug.split('-')
qs = Question.objects.filter(title__istartswith=slug_words[0])
for q in qs:
if slug == urlquote(slugify(q.title)):
return q
return None
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:
question = Question.objects.get(id=id)
except:
if slug:
question = match_question_slug(id, slug)
if question is not None:
return HttpResponseRedirect(question.get_absolute_url())
raise Http404()
if question.nis.deleted and not request.user.can_view_deleted_post(question):
raise Http404
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())
return answer_redirect(request, answer)
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)
if request.user.is_authenticated():
try:
subscription = QuestionSubscription.objects.get(question=question, user=request.user)
except:
subscription = False
else:
subscription = False
try:
focused_answer_id = int(request.GET.get("focusedAnswerId", None))
except TypeError, ValueError:
focused_answer_id = None
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')
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.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:
rev_ctx[i]['diff'] = mark_safe(htmldiff(rev_ctx[i-1]['html'], rev_ctx[i]['html']))
else:
rev_ctx[i]['diff'] = mark_safe(rev_ctx[i]['html'])
if not (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', {
'post': post,
'revisions': rev_ctx,
}, context_instance=RequestContext(request))