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, 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, hyperlink
  24 from forum.utils.diff import textDiff as htmldiff
  25 from forum.forms import *
  26 from forum.models import *
  27 from forum.forms import get_next_url
  28 from forum.actions import QuestionViewAction
  29 from forum.http_responses import HttpResponseUnauthorized
  30 from forum.feed import RssQuestionFeed
  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 def feed(request):
  46     return RssQuestionFeed(
  47                 Question.objects.filter_state(deleted=False).order_by('-last_activity_at'),
  48                 settings.APP_TITLE + _(' - ')+ _('latest questions'),
  49                 settings.APP_DESCRIPTION,
  50                 request)(request)
  51
  52
  53 @decorators.render('index.html')
  54 def index(request):
  55     return question_list(request,
  56                          Question.objects.all(),
  57                          sort=request.utils.set_sort_method('active'),
  58                          base_path=reverse('questions'),
  59                          feed_url=reverse('latest_questions_feed'))
  60
  61 @decorators.render('questions.html', 'unanswered', _('unanswered'), weight=400)
  62 def unanswered(request):
  63     return question_list(request,
  64                          Question.objects.filter(extra_ref=None),
  65                          _('open questions without an accepted answer'),
  66                          request.utils.set_sort_method('active'),
  67                          None,
  68                          _("Unanswered Questions"))
  69
  70 @decorators.render('questions.html', 'questions', _('questions'), weight=0)
  71 def questions(request):
  72     return question_list(request, Question.objects.all(), _('questions'), request.utils.set_sort_method('active'))
  73
  74 @decorators.render('questions.html')
  75 def tag(request, tag):
  76     return question_list(request,
  77                          Question.objects.filter(tags__name=unquote(tag)),
  78                          mark_safe(_('questions tagged <span class="tag">%(tag)s</span>') % {'tag': tag}),
  79                          request.utils.set_sort_method('active'),
  80                          None,
  81                          mark_safe(_('Questions Tagged With %(tag)s') % {'tag': tag}),
  82                          False)
  83
  84 @decorators.render('questions.html', 'questions', tabbed=False)
  85 def user_questions(request, mode, user, slug):
  86     user = get_object_or_404(User, id=user)
  87
  88     if mode == _('asked-by'):
  89         questions = Question.objects.filter(author=user)
  90         description = _("Questions asked by %s")
  91     elif mode == _('answered-by'):
  92         questions = Question.objects.filter(children__author=user, children__node_type='answer').distinct()
  93         description = _("Questions answered by %s")
  94     elif mode == _('subscribed-by'):
  95         if not (request.user.is_superuser or request.user == user):
  96             return HttpResponseUnauthorized(request)
  97         questions = user.subscriptions
  98
  99         if request.user == user:
 100             description = _("Questions you subscribed %s")
 101         else:
 102             description = _("Questions subscribed by %s")
 103     else:
 104         raise Http404
 105
 106
 107     return question_list(request, questions,
 108                          mark_safe(description % hyperlink(user.get_profile_url(), user.username)),
 109                          request.utils.set_sort_method('active'),
 110                          page_title=description % user.username)
 111
 112
 113 @decorators.list('questions', QUESTIONS_PAGE_SIZE)
 114 def question_list(request, initial,
 115                   list_description=_('questions'),
 116                   sort=None,
 117                   base_path=None,
 118                   page_title=_("All Questions"),
 119                   allowIgnoreTags=True,
 120                   feed_url=None):
 121
 122     questions = initial.filter_state(deleted=False)
 123
 124     if request.user.is_authenticated() and allowIgnoreTags:
 125         questions = questions.filter(~Q(tags__id__in = request.user.marked_tags.filter(user_selections__reason = 'bad'))
 126                                      )
 127
 128     if sort is not False:
 129         if sort is None:
 130             sort = request.utils.sort_method('latest')
 131         else:
 132             request.utils.set_sort_method(sort)
 133
 134         view_dic = {"latest":"-added_at", "active":"-last_activity_at", "hottest":"-extra_count", "mostvoted":"-score" }
 135
 136         questions=questions.order_by(view_dic.get(sort, '-added_at'))
 137
 138     if page_title is None:
 139         page_title = _("Questions")
 140
 141     if request.GET.get('type', None) == 'rss':
 142         return RssQuestionFeed(questions, page_title, list_description, request)(request)
 143
 144     keywords =  ""
 145     if request.GET.get("q"):
 146         keywords = request.GET.get("q").strip()
 147
 148     answer_count = Answer.objects.filter_state(deleted=False).filter(parent__in=questions).count()
 149     answer_description = _("answers")
 150
 151     if not feed_url:
 152         req_params = "&".join(["%s=%s" % (k, v) for k, v in request.GET.items() if not k in ('page', 'pagesize', 'sort')])
 153         if req_params:
 154             req_params = '&' + req_params
 155
 156         feed_url = mark_safe(request.path + "?type=rss" + req_params)
 157
 158     return {
 159     "questions" : questions,
 160     "questions_count" : questions.count(),
 161     "answer_count" : answer_count,
 162     "keywords" : keywords,
 163     "list_description": list_description,
 164     "answer_description": answer_description,
 165     "base_path" : base_path,
 166     "page_title" : page_title,
 167     "tab" : "questions",
 168     'feed_url': feed_url,
 169     }
 170
 171
 172 def search(request):
 173     if request.method == "GET" and "q" in request.GET:
 174         keywords = request.GET.get("q")
 175         search_type = request.GET.get("t")
 176
 177         if not keywords:
 178             return HttpResponseRedirect(reverse(index))
 179         if search_type == 'tag':
 180             return HttpResponseRedirect(reverse('tags') + '?q=%s' % urlquote(keywords.strip()))
 181         elif search_type == "user":
 182             return HttpResponseRedirect(reverse('users') + '?q=%s' % urlquote(keywords.strip()))
 183         elif search_type == "question":
 184             return question_search(request, keywords)
 185     else:
 186         return render_to_response("search.html", context_instance=RequestContext(request))
 187
 188 @decorators.render('questions.html')
 189 def question_search(request, keywords):
 190     initial = Question.objects.search(keywords)
 191
 192     return question_list(request, initial,
 193                          _("questions matching '%(keywords)s'") % {'keywords': keywords},
 194                          False,
 195                          "%s?t=question&q=%s" % (reverse('search'),django_urlquote(keywords)),
 196                          _("questions matching '%(keywords)s'") % {'keywords': keywords})
 197
 198
 199 @decorators.render('tags.html', 'tags', _('tags'), weight=100)
 200 def tags(request):
 201     stag = ""
 202     is_paginated = True
 203     sortby = request.GET.get('sort', 'used')
 204     try:
 205         page = int(request.GET.get('page', '1'))
 206     except ValueError:
 207         page = 1
 208
 209     if request.method == "GET":
 210         stag = request.GET.get("q", "").strip()
 211         if stag != '':
 212             objects_list = Paginator(Tag.active.filter(name__contains=stag), DEFAULT_PAGE_SIZE)
 213         else:
 214             if sortby == "name":
 215                 objects_list = Paginator(Tag.active.order_by("name"), DEFAULT_PAGE_SIZE)
 216             else:
 217                 objects_list = Paginator(Tag.active.order_by("-used_count"), DEFAULT_PAGE_SIZE)
 218
 219     try:
 220         tags = objects_list.page(page)
 221     except (EmptyPage, InvalidPage):
 222         tags = objects_list.page(objects_list.num_pages)
 223
 224     return {
 225         "tags" : tags,
 226         "stag" : stag,
 227         "tab_id" : sortby,
 228         "keywords" : stag,
 229         "context" : {
 230             'is_paginated' : is_paginated,
 231             'pages': objects_list.num_pages,
 232             'page': page,
 233             'has_previous': tags.has_previous(),
 234             'has_next': tags.has_next(),
 235             'previous': tags.previous_page_number(),
 236             'next': tags.next_page_number(),
 237             'base_url' : reverse('tags') + '?sort=%s&' % sortby
 238         }
 239     }
 240
 241 def get_answer_sort_order(request):
 242     view_dic = {"latest":"-added_at", "oldest":"added_at", "votes":"-score" }
 243
 244     view_id = request.GET.get('sort', request.session.get('answer_sort_order', None))
 245
 246     if view_id is None or not view_id in view_dic:
 247         view_id = "votes"
 248
 249     if view_id != request.session.get('answer_sort_order', None):
 250         request.session['answer_sort_order'] = view_id
 251
 252     return (view_id, view_dic[view_id])
 253
 254 def update_question_view_times(request, question):
 255     if not 'last_seen_in_question' in request.session:
 256         request.session['last_seen_in_question'] = {}
 257
 258     last_seen = request.session['last_seen_in_question'].get(question.id, None)
 259
 260     if (not last_seen) or last_seen < question.last_activity_at:
 261         QuestionViewAction(question, request.user, ip=request.META['REMOTE_ADDR']).save()
 262         request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 263
 264     request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 265
 266 def match_question_slug(slug):
 267     slug_words = slug.split('-')
 268     qs = Question.objects.filter(title__istartswith=slug_words[0])
 269
 270     for q in qs:
 271         if slug == urlquote(slugify(q.title)):
 272             return q
 273
 274     return None
 275
 276 def question(request, id, slug):
 277     try:
 278         question = Question.objects.get(id=id)
 279     except:
 280         if slug:
 281             question = match_question_slug(slug)
 282             if question is not None:
 283                 return HttpResponsePermanentRedirect(question.get_absolute_url())
 284
 285         raise Http404()
 286
 287     page = int(request.GET.get('page', 1))
 288     view_id, order_by = get_answer_sort_order(request)
 289
 290     if question.nis.deleted and not request.user.can_view_deleted_post(question):
 291         raise Http404
 292
 293     if request.POST:
 294         answer_form = AnswerForm(question, request.POST)
 295     else:
 296         answer_form = AnswerForm(question)
 297
 298     answers = request.user.get_visible_answers(question)
 299
 300     if answers is not None:
 301         answers = [a for a in answers.order_by("-marked", order_by)
 302                    if not a.nis.deleted or a.author == request.user]
 303
 304     objects_list = Paginator(answers, ANSWERS_PAGE_SIZE)
 305     page_objects = objects_list.page(page)
 306
 307     update_question_view_times(request, question)
 308
 309     if request.user.is_authenticated():
 310         try:
 311             subscription = QuestionSubscription.objects.get(question=question, user=request.user)
 312         except:
 313             subscription = False
 314     else:
 315         subscription = False
 316
 317     return render_to_response('question.html', {
 318     "question" : question,
 319     "answer" : answer_form,
 320     "answers" : page_objects.object_list,
 321     "tab_id" : view_id,
 322     "similar_questions" : question.get_related_questions(),
 323     "subscription": subscription,
 324     "context" : {
 325     'is_paginated' : True,
 326     'pages': objects_list.num_pages,
 327     'page': page,
 328     'has_previous': page_objects.has_previous(),
 329     'has_next': page_objects.has_next(),
 330     'previous': page_objects.previous_page_number(),
 331     'next': page_objects.next_page_number(),
 332     'base_url' : request.path + '?sort=%s&' % view_id,
 333     'extend_url' : "#sort-top"
 334     }
 335     }, context_instance=RequestContext(request))
 336
 337
 338 REVISION_TEMPLATE = template.loader.get_template('node/revision.html')
 339
 340 def revisions(request, id):
 341     post = get_object_or_404(Node, id=id).leaf
 342     revisions = list(post.revisions.order_by('revised_at'))
 343     rev_ctx = []
 344
 345     for i, revision in enumerate(revisions):
 346         rev_ctx.append(dict(inst=revision, html=template.loader.get_template('node/revision.html').render(template.Context({
 347         'title': revision.title,
 348         'html': revision.html,
 349         'tags': revision.tagname_list(),
 350         }))))
 351
 352         if i > 0:
 353             rev_ctx[i]['diff'] = mark_safe(htmldiff(rev_ctx[i-1]['html'], rev_ctx[i]['html']))
 354         else:
 355             rev_ctx[i]['diff'] = mark_safe(rev_ctx[i]['html'])
 356
 357         if not (revision.summary):
 358             rev_ctx[i]['summary'] = _('Revision n. %(rev_number)d') % {'rev_number': revision.revision}
 359         else:
 360             rev_ctx[i]['summary'] = revision.summary
 361
 362     rev_ctx.reverse()
 363
 364     return render_to_response('revisions.html', {
 365     'post': post,
 366     'revisions': rev_ctx,
 367     }, context_instance=RequestContext(request))
 368
 369
 370