forum/views/readers.py

   1 # encoding:utf-8
   2 import datetime
   3 import logging
   4 from urllib import unquote
   5 from django.conf 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
  53 @decorators.render('questions.html', 'questions')
  54 def questions(request):
  55     return question_list(request, Question.objects.all())
  56
  57 @decorators.render('questions.html')
  58 def tag(request, tag):
  59     return question_list(request, Question.objects.filter(tags__name=unquote(tag)),
  60                         mark_safe(_('Questions tagged <span class="tag">%(tag)s</span>') % {'tag': tag}))
  61
  62 @decorators.list('questions', QUESTIONS_PAGE_SIZE)
  63 def question_list(request, initial, list_description=_('questions'), sort=None, base_path=None):
  64     questions = initial.filter(deleted=None, in_moderation=None)
  65
  66     if request.user.is_authenticated():
  67         questions = questions.filter(
  68                 ~Q(tags__id__in=request.user.marked_tags.filter(user_selections__reason='bad')))
  69
  70     if sort is not False:
  71         if sort is None:
  72             sort = request.utils.sort_method('latest')
  73         else:
  74             request.utils.set_sort_method(sort)
  75
  76         view_dic = {"latest":"-added_at", "active":"-last_activity_at", "hottest":"-extra_count", "mostvoted":"-score" }
  77
  78         questions=questions.order_by(view_dic.get(sort, '-added_at'))
  79
  80     return {
  81         "questions" : questions,
  82         "questions_count" : questions.count(),
  83         #"tags_autocomplete" : _get_tags_cache_json(),
  84         "list_description": list_description,
  85         "base_path" : base_path,
  86         }
  87
  88
  89 def search(request):
  90     if request.method == "GET" and "q" in request.GET:
  91         keywords = request.GET.get("q")
  92         search_type = request.GET.get("t")
  93
  94         if not keywords:
  95             return HttpResponseRedirect(reverse(index))
  96         if search_type == 'tag':
  97             return HttpResponseRedirect(reverse('tags') + '?q=%s' % (keywords.strip()))
  98         elif search_type == "user":
  99             return HttpResponseRedirect(reverse('users') + '?q=%s' % (keywords.strip()))
 100         elif search_type == "question":
 101             return question_search(request, keywords)
 102     else:
 103         return render_to_response("search.html", context_instance=RequestContext(request))
 104
 105 @decoratable
 106 def do_question_search(keywords):
 107     return Question.objects.filter(Q(title__icontains=keywords) | Q(body__icontains=keywords))
 108
 109 @decorators.render('questions.html')
 110 def question_search(request, keywords):
 111     initial = do_question_search(keywords)
 112
 113     return question_list(request, initial, _("questions matching '%(keywords)s'") % {'keywords': keywords},
 114             base_path="%s?t=question&q=%s" % (reverse('search'), django_urlquote(keywords)), sort=False)
 115
 116
 117 def tags(request):#view showing a listing of available tags - plain list
 118     stag = ""
 119     is_paginated = True
 120     sortby = request.GET.get('sort', 'used')
 121     try:
 122         page = int(request.GET.get('page', '1'))
 123     except ValueError:
 124         page = 1
 125
 126     if request.method == "GET":
 127         stag = request.GET.get("q", "").strip()
 128         if stag != '':
 129             objects_list = Paginator(Tag.objects.filter(deleted=False).exclude(used_count=0).extra(where=['name like %s'], params=['%' + stag + '%']), DEFAULT_PAGE_SIZE)
 130         else:
 131             if sortby == "name":
 132                 objects_list = Paginator(Tag.objects.all().filter(deleted=False).exclude(used_count=0).order_by("name"), DEFAULT_PAGE_SIZE)
 133             else:
 134                 objects_list = Paginator(Tag.objects.all().filter(deleted=False).exclude(used_count=0).order_by("-used_count"), DEFAULT_PAGE_SIZE)
 135
 136     try:
 137         tags = objects_list.page(page)
 138     except (EmptyPage, InvalidPage):
 139         tags = objects_list.page(objects_list.num_pages)
 140
 141     return render_to_response('tags.html', {
 142                                             "tags" : tags,
 143                                             "stag" : stag,
 144                                             "tab_id" : sortby,
 145                                             "keywords" : stag,
 146                                             "context" : {
 147                                                 'is_paginated' : is_paginated,
 148                                                 'pages': objects_list.num_pages,
 149                                                 'page': page,
 150                                                 'has_previous': tags.has_previous(),
 151                                                 'has_next': tags.has_next(),
 152                                                 'previous': tags.previous_page_number(),
 153                                                 'next': tags.next_page_number(),
 154                                                 'base_url' : reverse('tags') + '?sort=%s&' % sortby
 155                                             }
 156                                 }, context_instance=RequestContext(request))
 157
 158 def get_answer_sort_order(request):
 159     view_dic = {"latest":"-added_at", "oldest":"added_at", "votes":"-score" }
 160
 161     view_id = request.GET.get('sort', request.session.get('answer_sort_order', None))
 162
 163     if view_id is None or not view_id in view_dic:
 164         view_id = "votes"
 165
 166     if view_id != request.session.get('answer_sort_order', None):
 167         request.session['answer_sort_order'] = view_id
 168
 169     return (view_id, view_dic[view_id])
 170
 171 def update_question_view_times(request, question):
 172     if not 'last_seen_in_question' in request.session:
 173         request.session['last_seen_in_question'] = {}
 174
 175     last_seen = request.session['last_seen_in_question'].get(question.id,None)
 176
 177     if (not last_seen) or last_seen < question.last_activity_at:
 178         QuestionViewAction(question, request.user, ip=request.META['REMOTE_ADDR']).save()
 179         request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 180
 181     request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 182
 183 def match_question_slug(slug):
 184     slug_words = slug.split('-')
 185     qs = Question.objects.filter(node_type="question", title__istartswith=slug_words[0])
 186
 187     for q in qs:
 188         if slug == urlquote(slugify(q.title)):
 189             return q
 190
 191     return None
 192
 193 def question(request, id, slug):
 194     try:
 195         question = Question.objects.get(node_type="question", id=id)
 196     except:
 197         question = match_question_slug(slug)
 198         if question is not None:
 199             return HttpResponsePermanentRedirect(question.get_absolute_url())
 200         else:
 201             raise Http404()
 202
 203     if slug != urlquote(slugify(question.title)):
 204         return HttpResponsePermanentRedirect(question.get_absolute_url())
 205
 206     page = int(request.GET.get('page', 1))
 207     view_id, order_by = get_answer_sort_order(request)
 208
 209     if question.deleted and not request.user.can_view_deleted_post(question):
 210         raise Http404
 211
 212     answer_form = AnswerForm(question)
 213     answers = request.user.get_visible_answers(question)
 214
 215     if answers is not None:
 216         answers = [a for a in answers.order_by("-marked", order_by)
 217                    if not a.deleted or a.author == request.user]
 218
 219     objects_list = Paginator(answers, ANSWERS_PAGE_SIZE)
 220     page_objects = objects_list.page(page)
 221
 222     update_question_view_times(request, question)
 223
 224     if request.user.is_authenticated():
 225         try:
 226             subscription = QuestionSubscription.objects.get(question=question, user=request.user)
 227         except:
 228             subscription = False
 229     else:
 230         subscription = False
 231
 232     return render_to_response('question.html', {
 233         "question" : question,
 234         "answer" : answer_form,
 235         "answers" : page_objects.object_list,
 236         "tab_id" : view_id,
 237         "similar_questions" : question.get_related_questions(),
 238         "subscription": subscription,
 239         "context" : {
 240             'is_paginated' : True,
 241             'pages': objects_list.num_pages,
 242             'page': page,
 243             'has_previous': page_objects.has_previous(),
 244             'has_next': page_objects.has_next(),
 245             'previous': page_objects.previous_page_number(),
 246             'next': page_objects.next_page_number(),
 247             'base_url' : request.path + '?sort=%s&' % view_id,
 248             'extend_url' : "#sort-top"
 249         }
 250         }, context_instance=RequestContext(request))
 251
 252
 253 REVISION_TEMPLATE = template.loader.get_template('node/revision.html')
 254
 255 def revisions(request, id):
 256     post = get_object_or_404(Node, id=id).leaf
 257     revisions = list(post.revisions.order_by('revised_at'))
 258
 259     rev_ctx = []
 260
 261     for i, revision in enumerate(revisions):
 262         rev_ctx.append(dict(inst=revision, html=REVISION_TEMPLATE.render(template.Context({
 263                 'title': revision.title,
 264                 'html': revision.html,
 265                 'tags': revision.tagname_list(),
 266         }))))
 267
 268         if i > 0:
 269             rev_ctx[i]['diff'] = mark_safe(htmldiff(rev_ctx[i-1]['html'], rev_ctx[i]['html']))
 270         else:
 271             rev_ctx[i]['diff'] = mark_safe(rev_ctx[i]['html'])
 272
 273         if not (revision.summary):
 274             rev_ctx[i]['summary'] = _('Revision n. %(rev_number)d') % {'rev_number': revision.revision}
 275         else:
 276             rev_ctx[i]['summary'] = revision.summary
 277
 278     return render_to_response('revisions.html', {
 279                               'post': post,
 280                               'revisions': rev_ctx,
 281                               }, context_instance=RequestContext(request))
 282
 283
 284