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.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,
  76                   allowIgnoreTags=True):
  77     questions = initial.filter_state(deleted=False)
  78
  79     if request.user.is_authenticated() and allowIgnoreTags:
  80         questions = questions.filter(~Q(tags__id__in = request.user.marked_tags.filter(user_selections__reason = 'bad'))
  81                                      )
  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     keywords =  ""
  97     if request.GET.get("q"):
  98         keywords = request.GET.get("q").strip()
  99
 100     answer_count = Answer.objects.filter_state(deleted=False).filter(parent__in=questions).count()
 101     answer_description = _("answers")
 102
 103     return {
 104     "questions" : questions,
 105     "questions_count" : questions.count(),
 106     "answer_count" : answer_count,
 107     "keywords" : keywords,
 108     #"tags_autocomplete" : _get_tags_cache_json(),
 109     "list_description": list_description,
 110     "answer_description": answer_description,
 111     "base_path" : base_path,
 112     "page_title" : page_title,
 113     "tab" : "questions",
 114     }
 115
 116
 117 def search(request):
 118     if request.method == "GET" and "q" in request.GET:
 119         keywords = request.GET.get("q")
 120         search_type = request.GET.get("t")
 121
 122         if not keywords:
 123             return HttpResponseRedirect(reverse(index))
 124         if search_type == 'tag':
 125             return HttpResponseRedirect(reverse('tags') + '?q=%s' % urlquote(keywords.strip()))
 126         elif search_type == "user":
 127             return HttpResponseRedirect(reverse('users') + '?q=%s' % urlquote(keywords.strip()))
 128         elif search_type == "question":
 129             return question_search(request, keywords)
 130     else:
 131         return render_to_response("search.html", context_instance=RequestContext(request))
 132
 133 @decorators.render('questions.html')
 134 def question_search(request, keywords):
 135     initial = Question.objects.search(keywords)
 136
 137     return question_list(request, initial, _("questions matching '%(keywords)s'") % {'keywords': keywords},
 138                          base_path="%s?t=question&q=%s" % (reverse('search'), django_urlquote(keywords)), sort=False)
 139
 140
 141 def tags(request):#view showing a listing of available tags - plain list
 142     stag = ""
 143     is_paginated = True
 144     sortby = request.GET.get('sort', 'used')
 145     try:
 146         page = int(request.GET.get('page', '1'))
 147     except ValueError:
 148         page = 1
 149
 150     if request.method == "GET":
 151         stag = request.GET.get("q", "").strip()
 152         if stag != '':
 153             objects_list = Paginator(Tag.active.filter(name__contains=stag), DEFAULT_PAGE_SIZE)
 154         else:
 155             if sortby == "name":
 156                 objects_list = Paginator(Tag.active.order_by("name"), DEFAULT_PAGE_SIZE)
 157             else:
 158                 objects_list = Paginator(Tag.active.order_by("-used_count"), DEFAULT_PAGE_SIZE)
 159
 160     try:
 161         tags = objects_list.page(page)
 162     except (EmptyPage, InvalidPage):
 163         tags = objects_list.page(objects_list.num_pages)
 164
 165     return render_to_response('tags.html', {
 166     "tags" : tags,
 167     "stag" : stag,
 168     "tab_id" : sortby,
 169     "keywords" : stag,
 170     "context" : {
 171     'is_paginated' : is_paginated,
 172     'pages': objects_list.num_pages,
 173     'page': page,
 174     'has_previous': tags.has_previous(),
 175     'has_next': tags.has_next(),
 176     'previous': tags.previous_page_number(),
 177     'next': tags.next_page_number(),
 178     'base_url' : reverse('tags') + '?sort=%s&' % sortby
 179     }
 180     }, context_instance=RequestContext(request))
 181
 182 def get_answer_sort_order(request):
 183     view_dic = {"latest":"-added_at", "oldest":"added_at", "votes":"-score" }
 184
 185     view_id = request.GET.get('sort', request.session.get('answer_sort_order', None))
 186
 187     if view_id is None or not view_id in view_dic:
 188         view_id = "votes"
 189
 190     if view_id != request.session.get('answer_sort_order', None):
 191         request.session['answer_sort_order'] = view_id
 192
 193     return (view_id, view_dic[view_id])
 194
 195 def update_question_view_times(request, question):
 196     if not 'last_seen_in_question' in request.session:
 197         request.session['last_seen_in_question'] = {}
 198
 199     last_seen = request.session['last_seen_in_question'].get(question.id, None)
 200
 201     if (not last_seen) or last_seen < question.last_activity_at:
 202         QuestionViewAction(question, request.user, ip=request.META['REMOTE_ADDR']).save()
 203         request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 204
 205     request.session['last_seen_in_question'][question.id] = datetime.datetime.now()
 206
 207 def match_question_slug(slug):
 208     slug_words = slug.split('-')
 209     qs = Question.objects.filter(title__istartswith=slug_words[0])
 210
 211     for q in qs:
 212         if slug == urlquote(slugify(q.title)):
 213             return q
 214
 215     return None
 216
 217 def question(request, id, slug):
 218     try:
 219         question = Question.objects.get(id=id)
 220     except:
 221         if slug:
 222             question = match_question_slug(slug)
 223             if question is not None:
 224                 return HttpResponsePermanentRedirect(question.get_absolute_url())
 225
 226         raise Http404()
 227
 228     page = int(request.GET.get('page', 1))
 229     view_id, order_by = get_answer_sort_order(request)
 230
 231     if question.nis.deleted and not request.user.can_view_deleted_post(question):
 232         raise Http404
 233
 234     if request.POST:
 235         answer_form = AnswerForm(question, request.POST)
 236     else:
 237         answer_form = AnswerForm(question)
 238
 239     answers = request.user.get_visible_answers(question)
 240
 241     if answers is not None:
 242         answers = [a for a in answers.order_by("-marked", order_by)
 243                    if not a.nis.deleted or a.author == request.user]
 244
 245     objects_list = Paginator(answers, ANSWERS_PAGE_SIZE)
 246     page_objects = objects_list.page(page)
 247
 248     update_question_view_times(request, question)
 249
 250     if request.user.is_authenticated():
 251         try:
 252             subscription = QuestionSubscription.objects.get(question=question, user=request.user)
 253         except:
 254             subscription = False
 255     else:
 256         subscription = False
 257
 258     return render_to_response('question.html', {
 259     "question" : question,
 260     "answer" : answer_form,
 261     "answers" : page_objects.object_list,
 262     "tab_id" : view_id,
 263     "similar_questions" : question.get_related_questions(),
 264     "subscription": subscription,
 265     "context" : {
 266     'is_paginated' : True,
 267     'pages': objects_list.num_pages,
 268     'page': page,
 269     'has_previous': page_objects.has_previous(),
 270     'has_next': page_objects.has_next(),
 271     'previous': page_objects.previous_page_number(),
 272     'next': page_objects.next_page_number(),
 273     'base_url' : request.path + '?sort=%s&' % view_id,
 274     'extend_url' : "#sort-top"
 275     }
 276     }, context_instance=RequestContext(request))
 277
 278
 279 REVISION_TEMPLATE = template.loader.get_template('node/revision.html')
 280
 281 def revisions(request, id):
 282     post = get_object_or_404(Node, id=id).leaf
 283     revisions = list(post.revisions.order_by('revised_at'))
 284
 285     rev_ctx = []
 286
 287     for i, revision in enumerate(revisions):
 288         rev_ctx.append(dict(inst=revision, html=REVISION_TEMPLATE.render(template.Context({
 289         'title': revision.title,
 290         'html': revision.html,
 291         'tags': revision.tagname_list(),
 292         }))))
 293
 294         if i > 0:
 295             rev_ctx[i]['diff'] = mark_safe(htmldiff(rev_ctx[i-1]['html'], rev_ctx[i]['html']))
 296         else:
 297             rev_ctx[i]['diff'] = mark_safe(rev_ctx[i]['html'])
 298
 299         if not (revision.summary):
 300             rev_ctx[i]['summary'] = _('Revision n. %(rev_number)d') % {'rev_number': revision.revision}
 301         else:
 302             rev_ctx[i]['summary'] = revision.summary
 303
 304     return render_to_response('revisions.html', {
 305     'post': post,
 306     'revisions': rev_ctx,
 307     }, context_instance=RequestContext(request))
 308
 309
 310