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