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