forum/views/readers.py

   1 # encoding:utf-8
   2 import datetime
   3 import logging
   4 from urllib import unquote
   5 from forum import settings as django_settings
   6 from django.shortcuts import render_to_response, get_object_or_404
   7 from django.http import HttpResponseRedirect, HttpResponse, Http404, HttpResponsePermanentRedirect
   8 from django.core.paginator import Paginator, EmptyPage, InvalidPage
   9 from django.template import RequestContext
  10 from django import template
  11 from django.utils.html import *
  12 from django.utils import simplejson
  13 from django.db.models import Q
  14 from django.utils.translation import ugettext as _
  15 from django.template.defaultfilters import slugify
  16 from django.core.urlresolvers import reverse
  17 from django.utils.datastructures import SortedDict
  18 from django.views.decorators.cache import cache_page
  19 from django.utils.http import urlquote  as django_urlquote
  20 from django.template.defaultfilters import slugify
  21 from django.utils.safestring import mark_safe
  22
  23 from forum.utils.html import sanitize_html
  24 from forum.utils.diff import textDiff as htmldiff
  25 from forum.forms import *
  26 from forum.models import *
  27 from forum.forms import get_next_url
  28 from forum.actions import QuestionViewAction
  29 import decorators
  30
  31 # used in index page
  32 #refactor - move these numbers somewhere?
  33 INDEX_PAGE_SIZE = 30
  34 INDEX_AWARD_SIZE = 15
  35 INDEX_TAGS_SIZE = 25
  36 # used in tags list
  37 DEFAULT_PAGE_SIZE = 60
  38 # used in questions
  39 QUESTIONS_PAGE_SIZE = 30
  40 # used in answers
  41 ANSWERS_PAGE_SIZE = 10
  42
  43 @decorators.render('index.html')
  44 def index(request):
  45     return question_list(request,
  46                          Question.objects.all(),
  47                          sort=request.utils.set_sort_method('active'),
  48                          base_path=reverse('questions'))
  49
  50 @decorators.render('questions.html', 'unanswered')
  51 def unanswered(request):
  52     return question_list(request,
  53                          Question.objects.filter(extra_ref=None),
  54                          _('open questions without an accepted answer'),
  55                          request.utils.set_sort_method('active'),
  56                          None,
  57                          _("Unanswered Questions"))
  58
  59 @decorators.render('questions.html', 'questions')
  60 def questions(request):
  61     return question_list(request, Question.objects.all(), _('questions'), request.utils.set_sort_method('active'))
  62
  63 @decorators.render('questions.html')
  64 def tag(request, tag):
  65     return question_list(request,
  66                          Question.objects.filter(tags__name=unquote(tag)),
  67                          mark_safe(_('questions tagged <span class="tag">%(tag)s</span>') % {'tag': tag}),
  68                          request.utils.set_sort_method('active'),
  69                          None,
  70                          mark_safe(_('Questions Tagged With <span class="tag">%(tag)s</span>') % {'tag': tag}),
  71                          False)
  72
  73 @decorators.list('questions', QUESTIONS_PAGE_SIZE)
  74 def question_list(request, initial,
  75                   list_description=_('questions'),
  76                   sort=None,
  77                   base_path=None,
  78                   page_title=_("All Questions"),
  79                   allowIgnoreTags=True):
  80
  81     questions = initial.filter_state(deleted=False)
  82
  83     if request.user.is_authenticated() and allowIgnoreTags:
  84         questions = questions.filter(~Q(tags__id__in = request.user.marked_tags.filter(user_selections__reason = 'bad'))
  85                                      )
  86
  87     if sort is not False:
  88         if sort is None:
  89             sort = request.utils.sort_method('latest')
  90         else:
  91             request.utils.set_sort_method(sort)
  92
  93         view_dic = {"latest":"-added_at", "active":"-last_activity_at", "hottest":"-extra_count", "mostvoted":"-score" }
  94
  95         questions=questions.order_by(view_dic.get(sort, '-added_at'))
  96
  97     if page_title is None:
  98         page_title = _("Questions")
  99
 100     keywords =  ""
 101     if request.GET.get("q"):
 102         keywords = request.GET.get("q").strip()
 103
 104     answer_count = Answer.objects.filter_state(deleted=False).filter(parent__in=questions).count()
 105     answer_description = _("answers")
 106
 107     return {
 108     "questions" : questions,
 109     "questions_count" : questions.count(),
 110     "answer_count" : answer_count,
 111     "keywords" : keywords,
 112     #"tags_autocomplete" : _get_tags_cache_json(),
 113     "list_description": list_description,
 114     "answer_description": answer_description,
 115     "base_path" : base_path,
 116     "page_title" : page_title,
 117     "tab" : "questions",
 118     }
 119
 120
 121 def search(request):
 122     if request.method == "GET" and "q" in request.GET:
 123         keywords = request.GET.get("q")
 124         search_type = request.GET.get("t")
 125
 126         if not keywords:
 127             return HttpResponseRedirect(reverse(index))
 128         if search_type == 'tag':
 129             return HttpResponseRedirect(reverse('tags') + '?q=%s' % urlquote(keywords.strip()))
 130         elif search_type == "user":
 131             return HttpResponseRedirect(reverse('users') + '?q=%s' % urlquote(keywords.strip()))
 132         elif search_type == "question":
 133             return question_search(request, keywords)
 134     else:
 135         return render_to_response("search.html", context_instance=RequestContext(request))
 136
 137 @decorators.render('questions.html')
 138 def question_search(request, keywords):
 139     initial = Question.objects.search(keywords)
 140
 141     return question_list(request, initial,
 142                          _("questions matching '%(keywords)s'") % {'keywords': keywords},
 143                          False,
 144                          "%s?t=question&q=%s" % (reverse('search'),django_urlquote(keywords)),
 145                          _("questions matching '%(keywords)s'") % {'keywords': keywords})
 146
 147
 148 def tags(request):#view showing a listing of available tags - plain list
 149     stag = ""
 150     is_paginated = True
 151     sortby = request.GET.get('sort', 'used')
 152     try:
 153         page = int(request.GET.get('page', '1'))
 154     except ValueError:
 155         page = 1
 156
 157     if request.method == "GET":
 158         stag = request.GET.get("q", "").strip()
 159         if stag != '':
 160             objects_list = Paginator(Tag.active.filter(name__contains=stag), DEFAULT_PAGE_SIZE)
 161         else:
 162             if sortby == "name":
 163                 objects_list = Paginator(Tag.active.order_by("name"), DEFAULT_PAGE_SIZE)
 164             else:
 165                 objects_list = Paginator(Tag.active.order_by("-used_count"), DEFAULT_PAGE_SIZE)
 166
 167     try:
 168         tags = objects_list.page(page)
 169     except (EmptyPage, InvalidPage):
 170         tags = objects_list.page(objects_list.num_pages)
 171
 172     return render_to_response('tags.html', {
 173     "tags" : tags,
 174     "stag" : stag,
 175     "tab_id" : sortby,
 176     "keywords" : stag,
 177     "context" : {
 178     'is_paginated' : is_paginated,
 179     'pages': objects_list.num_pages,
 180     'page': page,
 181     'has_previous': tags.has_previous(),
 182     'has_next': tags.has_next(),
 183     'previous': tags.previous_page_number(),
 184     'next': tags.next_page_number(),
 185     'base_url' : reverse('tags') + '?sort=%s&' % sortby
 186     }
 187     }, context_instance=RequestContext(request))
 188
 189 def get_answer_sort_order(request):
 190     view_dic = {"latest":"-added_at", "oldest":"added_at", "votes":"-score" }
 191
 192     view_id = request.GET.get('sort', request.session.get('answer_sort_order', None))
 193
 194     if view_id is None or not view_id in view_dic:
 195         view_id = "votes"
 196
 197     if view_id != request.session.get('answer_sort_order', None):
 198         request.session['answer_sort_order'] = view_id
 199
 200     return (view_id, view_dic[view_id])
 201
 202 def update_question_view_times(request, question):
 203     if not 'last_seen_in_question' in request.session:
 204         request.session['last_seen_in_question'] = {}
 205
 206     last_seen = request.session['last_seen_in_question'].get(question.id, None)
 207
 208     if (not last_seen) or last_seen < question.last_activity_at:
 209         QuestionViewAction(question, request.user, ip=request.META['REMOTE_ADDR']).save()
 210         request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 211
 212     request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 213
 214 def match_question_slug(slug):
 215     slug_words = slug.split('-')
 216     qs = Question.objects.filter(title__istartswith=slug_words[0])
 217
 218     for q in qs:
 219         if slug == urlquote(slugify(q.title)):
 220             return q
 221
 222     return None
 223
 224 def question(request, id, slug):
 225     try:
 226         question = Question.objects.get(id=id)
 227     except:
 228         if slug:
 229             question = match_question_slug(slug)
 230             if question is not None:
 231                 return HttpResponsePermanentRedirect(question.get_absolute_url())
 232
 233         raise Http404()
 234
 235     page = int(request.GET.get('page', 1))
 236     view_id, order_by = get_answer_sort_order(request)
 237
 238     if question.nis.deleted and not request.user.can_view_deleted_post(question):
 239         raise Http404
 240
 241     if request.POST:
 242         answer_form = AnswerForm(question, request.POST)
 243     else:
 244         answer_form = AnswerForm(question)
 245
 246     answers = request.user.get_visible_answers(question)
 247
 248     if answers is not None:
 249         answers = [a for a in answers.order_by("-marked", order_by)
 250                    if not a.nis.deleted or a.author == request.user]
 251
 252     objects_list = Paginator(answers, ANSWERS_PAGE_SIZE)
 253     page_objects = objects_list.page(page)
 254
 255     update_question_view_times(request, question)
 256
 257     if request.user.is_authenticated():
 258         try:
 259             subscription = QuestionSubscription.objects.get(question=question, user=request.user)
 260         except:
 261             subscription = False
 262     else:
 263         subscription = False
 264
 265     return render_to_response('question.html', {
 266     "question" : question,
 267     "answer" : answer_form,
 268     "answers" : page_objects.object_list,
 269     "tab_id" : view_id,
 270     "similar_questions" : question.get_related_questions(),
 271     "subscription": subscription,
 272     "context" : {
 273     'is_paginated' : True,
 274     'pages': objects_list.num_pages,
 275     'page': page,
 276     'has_previous': page_objects.has_previous(),
 277     'has_next': page_objects.has_next(),
 278     'previous': page_objects.previous_page_number(),
 279     'next': page_objects.next_page_number(),
 280     'base_url' : request.path + '?sort=%s&' % view_id,
 281     'extend_url' : "#sort-top"
 282     }
 283     }, context_instance=RequestContext(request))
 284
 285
 286 REVISION_TEMPLATE = template.loader.get_template('node/revision.html')
 287
 288 def revisions(request, id):
 289     post = get_object_or_404(Node, id=id).leaf
 290     revisions = list(post.revisions.order_by('revised_at'))
 291
 292     rev_ctx = []
 293
 294     for i, revision in enumerate(revisions):
 295         rev_ctx.append(dict(inst=revision, html=REVISION_TEMPLATE.render(template.Context({
 296         'title': revision.title,
 297         'html': revision.html,
 298         'tags': revision.tagname_list(),
 299         }))))
 300
 301         if i > 0:
 302             rev_ctx[i]['diff'] = mark_safe(htmldiff(rev_ctx[i-1]['html'], rev_ctx[i]['html']))
 303         else:
 304             rev_ctx[i]['diff'] = mark_safe(rev_ctx[i]['html'])
 305
 306         if not (revision.summary):
 307             rev_ctx[i]['summary'] = _('Revision n. %(rev_number)d') % {'rev_number': revision.revision}
 308         else:
 309             rev_ctx[i]['summary'] = revision.summary
 310
 311     return render_to_response('revisions.html', {
 312     'post': post,
 313     'revisions': rev_ctx,
 314     }, context_instance=RequestContext(request))
 315
 316
 317