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