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     test = request.user.marked_tags
  79
  80     if request.user.is_authenticated() and allowIgnoreTags:
  81         questions = questions.filter(~Q(tags__id__in = request.user.marked_tags.filter(user_selections__reason = 'bad')))
  82
  83     if sort is not False:
  84         if sort is None:
  85             sort = request.utils.sort_method('latest')
  86         else:
  87             request.utils.set_sort_method(sort)
  88
  89         view_dic = {"latest":"-added_at", "active":"-last_activity_at", "hottest":"-extra_count", "mostvoted":"-score" }
  90
  91         questions=questions.order_by(view_dic.get(sort, '-added_at'))
  92
  93     if page_title is None:
  94         page_title = _("Questions")
  95
  96     return {
  97         "questions" : questions,
  98         "questions_count" : questions.count(),
  99         #"tags_autocomplete" : _get_tags_cache_json(),
 100         "list_description": list_description,
 101         "base_path" : base_path,
 102         "page_title" : page_title,
 103         }
 104
 105
 106 def search(request):
 107     if request.method == "GET" and "q" in request.GET:
 108         keywords = request.GET.get("q")
 109         search_type = request.GET.get("t")
 110
 111         if not keywords:
 112             return HttpResponseRedirect(reverse(index))
 113         if search_type == 'tag':
 114             return HttpResponseRedirect(reverse('tags') + '?q=%s' % (keywords.strip()))
 115         elif search_type == "user":
 116             return HttpResponseRedirect(reverse('users') + '?q=%s' % (keywords.strip()))
 117         elif search_type == "question":
 118             return question_search(request, keywords)
 119     else:
 120         return render_to_response("search.html", context_instance=RequestContext(request))
 121
 122 @decoratable
 123 def do_question_search(keywords):
 124     return Question.objects.filter(Q(title__icontains=keywords) | Q(body__icontains=keywords))
 125
 126 @decorators.render('questions.html')
 127 def question_search(request, keywords):
 128     initial = do_question_search(keywords)
 129
 130     return question_list(request, initial, _("questions matching '%(keywords)s'") % {'keywords': keywords},
 131             base_path="%s?t=question&q=%s" % (reverse('search'), django_urlquote(keywords)), sort=False)
 132
 133
 134 def tags(request):#view showing a listing of available tags - plain list
 135     stag = ""
 136     is_paginated = True
 137     sortby = request.GET.get('sort', 'used')
 138     try:
 139         page = int(request.GET.get('page', '1'))
 140     except ValueError:
 141         page = 1
 142
 143     if request.method == "GET":
 144         stag = request.GET.get("q", "").strip()
 145         if stag != '':
 146             objects_list = Paginator(Tag.objects.filter(deleted=False).exclude(used_count=0).extra(where=['name like %s'], params=['%' + stag + '%']), DEFAULT_PAGE_SIZE)
 147         else:
 148             if sortby == "name":
 149                 objects_list = Paginator(Tag.objects.all().filter(deleted=False).exclude(used_count=0).order_by("name"), DEFAULT_PAGE_SIZE)
 150             else:
 151                 objects_list = Paginator(Tag.objects.all().filter(deleted=False).exclude(used_count=0).order_by("-used_count"), DEFAULT_PAGE_SIZE)
 152
 153     try:
 154         tags = objects_list.page(page)
 155     except (EmptyPage, InvalidPage):
 156         tags = objects_list.page(objects_list.num_pages)
 157
 158     return render_to_response('tags.html', {
 159                                             "tags" : tags,
 160                                             "stag" : stag,
 161                                             "tab_id" : sortby,
 162                                             "keywords" : stag,
 163                                             "context" : {
 164                                                 'is_paginated' : is_paginated,
 165                                                 'pages': objects_list.num_pages,
 166                                                 'page': page,
 167                                                 'has_previous': tags.has_previous(),
 168                                                 'has_next': tags.has_next(),
 169                                                 'previous': tags.previous_page_number(),
 170                                                 'next': tags.next_page_number(),
 171                                                 'base_url' : reverse('tags') + '?sort=%s&' % sortby
 172                                             }
 173                                 }, context_instance=RequestContext(request))
 174
 175 def get_answer_sort_order(request):
 176     view_dic = {"latest":"-added_at", "oldest":"added_at", "votes":"-score" }
 177
 178     view_id = request.GET.get('sort', request.session.get('answer_sort_order', None))
 179
 180     if view_id is None or not view_id in view_dic:
 181         view_id = "votes"
 182
 183     if view_id != request.session.get('answer_sort_order', None):
 184         request.session['answer_sort_order'] = view_id
 185
 186     return (view_id, view_dic[view_id])
 187
 188 def update_question_view_times(request, question):
 189     if not 'last_seen_in_question' in request.session:
 190         request.session['last_seen_in_question'] = {}
 191
 192     last_seen = request.session['last_seen_in_question'].get(question.id,None)
 193
 194     if (not last_seen) or last_seen < question.last_activity_at:
 195         QuestionViewAction(question, request.user, ip=request.META['REMOTE_ADDR']).save()
 196         request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 197
 198     request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 199
 200 def match_question_slug(slug):
 201     slug_words = slug.split('-')
 202     qs = Question.objects.filter(node_type="question", title__istartswith=slug_words[0])
 203
 204     for q in qs:
 205         if slug == urlquote(slugify(q.title)):
 206             return q
 207
 208     return None
 209
 210 def question(request, id, slug):
 211     try:
 212         question = Question.objects.get(node_type="question", id=id)
 213     except:
 214         question = match_question_slug(slug)
 215         if question is not None:
 216             return HttpResponsePermanentRedirect(question.get_absolute_url())
 217         else:
 218             raise Http404()
 219
 220     if slug != urlquote(slugify(question.title)):
 221         return HttpResponsePermanentRedirect(question.get_absolute_url())
 222
 223     page = int(request.GET.get('page', 1))
 224     view_id, order_by = get_answer_sort_order(request)
 225
 226     if question.deleted and not request.user.can_view_deleted_post(question):
 227         raise Http404
 228
 229     answer_form = AnswerForm(question)
 230     answers = request.user.get_visible_answers(question)
 231
 232     if answers is not None:
 233         answers = [a for a in answers.order_by("-marked", order_by)
 234                    if not a.deleted or a.author == request.user]
 235
 236     objects_list = Paginator(answers, ANSWERS_PAGE_SIZE)
 237     page_objects = objects_list.page(page)
 238
 239     update_question_view_times(request, question)
 240
 241     if request.user.is_authenticated():
 242         try:
 243             subscription = QuestionSubscription.objects.get(question=question, user=request.user)
 244         except:
 245             subscription = False
 246     else:
 247         subscription = False
 248
 249     return render_to_response('question.html', {
 250         "question" : question,
 251         "answer" : answer_form,
 252         "answers" : page_objects.object_list,
 253         "tab_id" : view_id,
 254         "similar_questions" : question.get_related_questions(),
 255         "subscription": subscription,
 256         "context" : {
 257             'is_paginated' : True,
 258             'pages': objects_list.num_pages,
 259             'page': page,
 260             'has_previous': page_objects.has_previous(),
 261             'has_next': page_objects.has_next(),
 262             'previous': page_objects.previous_page_number(),
 263             'next': page_objects.next_page_number(),
 264             'base_url' : request.path + '?sort=%s&' % view_id,
 265             'extend_url' : "#sort-top"
 266         }
 267         }, context_instance=RequestContext(request))
 268
 269
 270 REVISION_TEMPLATE = template.loader.get_template('node/revision.html')
 271
 272 def revisions(request, id):
 273     post = get_object_or_404(Node, id=id).leaf
 274     revisions = list(post.revisions.order_by('revised_at'))
 275
 276     rev_ctx = []
 277
 278     for i, revision in enumerate(revisions):
 279         rev_ctx.append(dict(inst=revision, html=REVISION_TEMPLATE.render(template.Context({
 280                 'title': revision.title,
 281                 'html': revision.html,
 282                 'tags': revision.tagname_list(),
 283         }))))
 284
 285         if i > 0:
 286             rev_ctx[i]['diff'] = mark_safe(htmldiff(rev_ctx[i-1]['html'], rev_ctx[i]['html']))
 287         else:
 288             rev_ctx[i]['diff'] = mark_safe(rev_ctx[i]['html'])
 289
 290         if not (revision.summary):
 291             rev_ctx[i]['summary'] = _('Revision n. %(rev_number)d') % {'rev_number': revision.revision}
 292         else:
 293             rev_ctx[i]['summary'] = revision.summary
 294
 295     return render_to_response('revisions.html', {
 296                               'post': post,
 297                               'revisions': rev_ctx,
 298                               }, context_instance=RequestContext(request))
 299
 300
 301