diff options
Diffstat (limited to 'forum/views/content.py')
| -rw-r--r-- | forum/views/content.py | 1394 |
1 files changed, 1394 insertions, 0 deletions
diff --git a/forum/views/content.py b/forum/views/content.py new file mode 100644 index 00000000..9506fe3a --- /dev/null +++ b/forum/views/content.py @@ -0,0 +1,1394 @@ +# encoding:utf-8 +import os.path +import time, datetime, calendar, random +import logging +from urllib import quote, unquote +from django.conf import settings +from django.core.files.storage import default_storage +from django.shortcuts import render_to_response, get_object_or_404 +from django.contrib.auth.decorators import login_required +from django.http import HttpResponseRedirect, HttpResponse, HttpResponseForbidden, Http404 +from django.core.paginator import Paginator, EmptyPage, InvalidPage +from django.template import RequestContext, loader +from django.utils.html import * +from django.utils import simplejson +from django.core import serializers +from django.db import transaction +from django.db.models import Count, Q +from django.contrib.contenttypes.models import ContentType +from django.utils.translation import ugettext as _ +from django.utils.datastructures import SortedDict +from django.template.defaultfilters import slugify +from django.core.exceptions import PermissionDenied +from django.core.urlresolvers import reverse + +from utils.html import sanitize_html +from utils.decorators import ajax_method, ajax_login_required +from markdown2 import Markdown +#from lxml.html.diff import htmldiff +from forum.diff import textDiff as htmldiff +from forum.forms import * +from forum.models import * +from forum.auth import * +from forum.const import * +from forum import auth +from utils.forms import get_next_url + +# used in index page +INDEX_PAGE_SIZE = 20 +INDEX_AWARD_SIZE = 15 +INDEX_TAGS_SIZE = 100 +# used in tags list +DEFAULT_PAGE_SIZE = 60 +# used in questions +QUESTIONS_PAGE_SIZE = 10 +# used in answers +ANSWERS_PAGE_SIZE = 10 + +markdowner = Markdown(html4tags=True) + +#system to display main content +def _get_tags_cache_json():#service routine + """returns list of all tags in json format + no caching yet, actually + """ + tags = Tag.objects.filter(deleted=False).all() + tags_list = [] + for tag in tags: + dic = {'n': tag.name, 'c': tag.used_count} + tags_list.append(dic) + tags = simplejson.dumps(tags_list) + return tags + +def _get_and_remember_questions_sort_method(request, view_dic, default):#service routine + """manages persistence of post sort order + it is assumed that when user wants newest question - + then he/she wants newest answers as well, etc. + how far should this assumption actually go - may be a good question + """ + if default not in view_dic: + raise Exception('default value must be in view_dic') + + q_sort_method = request.REQUEST.get('sort', None) + if q_sort_method == None: + q_sort_method = request.session.get('questions_sort_method', default) + + if q_sort_method not in view_dic: + q_sort_method = default + request.session['questions_sort_method'] = q_sort_method + return q_sort_method, view_dic[q_sort_method] + +#refactor? - we have these +#views that generate a listing of questions in one way or another: +#index, unanswered, questions, search, tag +#should we dry them up? +#related topics - information drill-down, search refinement + +def index(request):#generates front page - shows listing of questions sorted in various ways + """index view mapped to the root url of the Q&A site + """ + view_dic = { + "latest":"-last_activity_at", + "hottest":"-answer_count", + "mostvoted":"-score", + } + view_id, orderby = _get_and_remember_questions_sort_method(request, view_dic, 'latest') + + page_size = request.session.get('pagesize', QUESTIONS_PAGE_SIZE) + questions = Question.objects.exclude(deleted=True).order_by(orderby)[:page_size] + # RISK - inner join queries + questions = questions.select_related() + tags = Tag.objects.get_valid_tags(INDEX_TAGS_SIZE) + + awards = Award.objects.get_recent_awards() + + (interesting_tag_names, ignored_tag_names) = (None, None) + if request.user.is_authenticated(): + pt = MarkedTag.objects.filter(user=request.user) + interesting_tag_names = pt.filter(reason='good').values_list('tag__name', flat=True) + ignored_tag_names = pt.filter(reason='bad').values_list('tag__name', flat=True) + + tags_autocomplete = _get_tags_cache_json() + + return render_to_response('index.html', { + 'interesting_tag_names': interesting_tag_names, + 'tags_autocomplete': tags_autocomplete, + 'ignored_tag_names': ignored_tag_names, + "questions" : questions, + "tab_id" : view_id, + "tags" : tags, + "awards" : awards[:INDEX_AWARD_SIZE], + }, context_instance=RequestContext(request)) + +def unanswered(request):#generates listing of unanswered questions + return questions(request, unanswered=True) + +def questions(request, tagname=None, unanswered=False):#a view generating listing of questions, used by 'unanswered' too + """ + List of Questions, Tagged questions, and Unanswered questions. + """ + # template file + # "questions.html" or maybe index.html in the future + template_file = "questions.html" + # Set flag to False by default. If it is equal to True, then need to be saved. + pagesize_changed = False + # get pagesize from session, if failed then get default value + pagesize = request.session.get("pagesize",10) + try: + page = int(request.GET.get('page', '1')) + except ValueError: + page = 1 + + view_dic = {"latest":"-added_at", "active":"-last_activity_at", "hottest":"-answer_count", "mostvoted":"-score" } + view_id, orderby = _get_and_remember_questions_sort_method(request,view_dic,'latest') + + # check if request is from tagged questions + qs = Question.objects.exclude(deleted=True) + + if tagname is not None: + qs = qs.filter(tags__name = unquote(tagname)) + + if unanswered: + qs = qs.exclude(answer_accepted=True) + + author_name = None + #user contributed questions & answers + if 'user' in request.GET: + try: + author_name = request.GET['user'] + u = User.objects.get(username=author_name) + qs = qs.filter(Q(author=u) | Q(answers__author=u)) + except User.DoesNotExist: + author_name = None + + if request.user.is_authenticated(): + uid_str = str(request.user.id) + qs = qs.extra( + select = SortedDict([ + ( + 'interesting_score', + 'SELECT COUNT(1) FROM forum_markedtag, question_tags ' + + 'WHERE forum_markedtag.user_id = %s ' + + 'AND forum_markedtag.tag_id = question_tags.tag_id ' + + 'AND forum_markedtag.reason = \'good\' ' + + 'AND question_tags.question_id = question.id' + ), + ]), + select_params = (uid_str,), + ) + if request.user.hide_ignored_questions: + ignored_tags = Tag.objects.filter(user_selections__reason='bad', + user_selections__user = request.user) + qs = qs.exclude(tags__in=ignored_tags) + else: + qs = qs.extra( + select = SortedDict([ + ( + 'ignored_score', + 'SELECT COUNT(1) FROM forum_markedtag, question_tags ' + + 'WHERE forum_markedtag.user_id = %s ' + + 'AND forum_markedtag.tag_id = question_tags.tag_id ' + + 'AND forum_markedtag.reason = \'bad\' ' + + 'AND question_tags.question_id = question.id' + ) + ]), + select_params = (uid_str, ) + ) + + qs = qs.select_related(depth=1).order_by(orderby) + + objects_list = Paginator(qs, pagesize) + questions = objects_list.page(page) + + # Get related tags from this page objects + if questions.object_list.count() > 0: + related_tags = Tag.objects.get_tags_by_questions(questions.object_list) + else: + related_tags = None + tags_autocomplete = _get_tags_cache_json() + + # get the list of interesting and ignored tags + (interesting_tag_names, ignored_tag_names) = (None, None) + if request.user.is_authenticated(): + pt = MarkedTag.objects.filter(user=request.user) + interesting_tag_names = pt.filter(reason='good').values_list('tag__name', flat=True) + ignored_tag_names = pt.filter(reason='bad').values_list('tag__name', flat=True) + + return render_to_response(template_file, { + "questions" : questions, + "author_name" : author_name, + "tab_id" : view_id, + "questions_count" : objects_list.count, + "tags" : related_tags, + "tags_autocomplete" : tags_autocomplete, + "searchtag" : tagname, + "is_unanswered" : unanswered, + "interesting_tag_names": interesting_tag_names, + 'ignored_tag_names': ignored_tag_names, + "context" : { + 'is_paginated' : True, + 'pages': objects_list.num_pages, + 'page': page, + 'has_previous': questions.has_previous(), + 'has_next': questions.has_next(), + 'previous': questions.previous_page_number(), + 'next': questions.next_page_number(), + 'base_url' : request.path + '?sort=%s&' % view_id, + 'pagesize' : pagesize + }}, context_instance=RequestContext(request)) + +def search(request): #generates listing of questions matching a search query - including tags and just words + """generates listing of questions matching a search query + supports full text search in mysql db using sphinx and internally in postgresql + falls back on simple partial string matching approach if + full text search function is not available + """ + if request.method == "GET": + keywords = request.GET.get("q") + search_type = request.GET.get("t") + try: + page = int(request.GET.get('page', '1')) + except ValueError: + page = 1 + if keywords is None: + return HttpResponseRedirect(reverse(index)) + if search_type == 'tag': + return HttpResponseRedirect(reverse('tags') + '?q=%s&page=%s' % (keywords.strip(), page)) + elif search_type == "user": + return HttpResponseRedirect(reverse('users') + '?q=%s&page=%s' % (keywords.strip(), page)) + elif search_type == "question": + + template_file = "questions.html" + # Set flag to False by default. If it is equal to True, then need to be saved. + pagesize_changed = False + # get pagesize from session, if failed then get default value + user_page_size = request.session.get("pagesize", QUESTIONS_PAGE_SIZE) + # set pagesize equal to logon user specified value in database + if request.user.is_authenticated() and request.user.questions_per_page > 0: + user_page_size = request.user.questions_per_page + + try: + page = int(request.GET.get('page', '1')) + # get new pagesize from UI selection + pagesize = int(request.GET.get('pagesize', user_page_size)) + if pagesize <> user_page_size: + pagesize_changed = True + + except ValueError: + page = 1 + pagesize = user_page_size + + # save this pagesize to user database + if pagesize_changed: + request.session["pagesize"] = pagesize + if request.user.is_authenticated(): + user = request.user + user.questions_per_page = pagesize + user.save() + + view_id = request.GET.get('sort', None) + view_dic = {"latest":"-added_at", "active":"-last_activity_at", "hottest":"-answer_count", "mostvoted":"-score" } + try: + orderby = view_dic[view_id] + except KeyError: + view_id = "latest" + orderby = "-added_at" + + if settings.USE_PG_FTS: + objects = Question.objects.filter(deleted=False).extra( + select={ + 'ranking': "ts_rank_cd(tsv, plainto_tsquery(%s), 32)", + }, + where=["tsv @@ plainto_tsquery(%s)"], + params=[keywords], + select_params=[keywords] + ).order_by('-ranking') + + elif settings.USE_SPHINX_SEARCH == True: + #search index is now free of delete questions and answers + #so there is not "antideleted" filtering here + objects = Question.search.query(keywords) + #no related selection either because we're relying on full text search here + else: + objects = Question.objects.filter(deleted=False).extra(where=['title like %s'], params=['%' + keywords + '%']).order_by(orderby) + # RISK - inner join queries + objects = objects.select_related(); + + objects_list = Paginator(objects, pagesize) + questions = objects_list.page(page) + + # Get related tags from this page objects + related_tags = [] + for question in questions.object_list: + tags = list(question.tags.all()) + for tag in tags: + if tag not in related_tags: + related_tags.append(tag) + + #if is_search is true in the context, prepend this string to soting tabs urls + search_uri = "?q=%s&page=%d&t=question" % ("+".join(keywords.split()), page) + + return render_to_response(template_file, { + "questions" : questions, + "tab_id" : view_id, + "questions_count" : objects_list.count, + "tags" : related_tags, + "searchtag" : None, + "searchtitle" : keywords, + "keywords" : keywords, + "is_unanswered" : False, + "is_search": True, + "search_uri": search_uri, + "context" : { + 'is_paginated' : True, + 'pages': objects_list.num_pages, + 'page': page, + 'has_previous': questions.has_previous(), + 'has_next': questions.has_next(), + 'previous': questions.previous_page_number(), + 'next': questions.next_page_number(), + 'base_url' : request.path + '?t=question&q=%s&sort=%s&' % (keywords, view_id), + 'pagesize' : pagesize + }}, context_instance=RequestContext(request)) + + else: + raise Http404 + +def tag(request, tag):#generates listing of questions tagged with a single tag + return questions(request, tagname=tag) + +def tags(request):#view showing a listing of available tags - plain list + stag = "" + is_paginated = True + sortby = request.GET.get('sort', 'used') + try: + page = int(request.GET.get('page', '1')) + except ValueError: + page = 1 + + if request.method == "GET": + stag = request.GET.get("q", "").strip() + if stag != '': + objects_list = Paginator(Tag.objects.filter(deleted=False).exclude(used_count=0).extra(where=['name like %s'], params=['%' + stag + '%']), DEFAULT_PAGE_SIZE) + else: + if sortby == "name": + objects_list = Paginator(Tag.objects.all().filter(deleted=False).exclude(used_count=0).order_by("name"), DEFAULT_PAGE_SIZE) + else: + objects_list = Paginator(Tag.objects.all().filter(deleted=False).exclude(used_count=0).order_by("-used_count"), DEFAULT_PAGE_SIZE) + + try: + tags = objects_list.page(page) + except (EmptyPage, InvalidPage): + tags = objects_list.page(objects_list.num_pages) + + return render_to_response('tags.html', { + "tags" : tags, + "stag" : stag, + "tab_id" : sortby, + "keywords" : stag, + "context" : { + 'is_paginated' : is_paginated, + 'pages': objects_list.num_pages, + 'page': page, + 'has_previous': tags.has_previous(), + 'has_next': tags.has_next(), + 'previous': tags.previous_page_number(), + 'next': tags.next_page_number(), + 'base_url' : reverse('tags') + '?sort=%s&' % sortby + } + }, context_instance=RequestContext(request)) + +def question(request, id):#refactor - long subroutine. display question body, answers and comments + """view that displays body of the question and + all answers to it + """ + try: + page = int(request.GET.get('page', '1')) + except ValueError: + page = 1 + + view_id = request.GET.get('sort', None) + view_dic = {"latest":"-added_at", "oldest":"added_at", "votes":"-score" } + try: + orderby = view_dic[view_id] + except KeyError: + qsm = request.session.get('questions_sort_method',None) + if qsm in ('mostvoted','latest'): + logging.debug('loaded from session ' + qsm) + if qsm == 'mostvoted': + view_id = 'votes' + orderby = '-score' + else: + view_id = 'latest' + orderby = '-added_at' + else: + view_id = "votes" + orderby = "-score" + + logging.debug('view_id=' + str(view_id)) + + question = get_object_or_404(Question, id=id) + try: + pattern = r'/%s%s%d/([\w-]+)' % (settings.FORUM_SCRIPT_ALIAS,_('question/'), question.id) + path_re = re.compile(pattern) + logging.debug(pattern) + logging.debug(request.path) + m = path_re.match(request.path) + if m: + slug = m.group(1) + logging.debug('have slug %s' % slug) + assert(slug == slugify(question.title)) + else: + logging.debug('no match!') + except: + return HttpResponseRedirect(question.get_absolute_url()) + + if question.deleted and not auth.can_view_deleted_post(request.user, question): + raise Http404 + answer_form = AnswerForm(question,request.user) + answers = Answer.objects.get_answers_from_question(question, request.user) + answers = answers.select_related(depth=1) + + favorited = question.has_favorite_by_user(request.user) + if request.user.is_authenticated(): + question_vote = question.votes.select_related().filter(user=request.user) + else: + question_vote = None #is this correct? + if question_vote is not None and question_vote.count() > 0: + question_vote = question_vote[0] + + user_answer_votes = {} + for answer in answers: + vote = answer.get_user_vote(request.user) + if vote is not None and not user_answer_votes.has_key(answer.id): + vote_value = -1 + if vote.is_upvote(): + vote_value = 1 + user_answer_votes[answer.id] = vote_value + + if answers is not None: + answers = answers.order_by("-accepted", orderby) + + filtered_answers = [] + for answer in answers: + if answer.deleted == True: + if answer.author_id == request.user.id: + filtered_answers.append(answer) + else: + filtered_answers.append(answer) + + objects_list = Paginator(filtered_answers, ANSWERS_PAGE_SIZE) + page_objects = objects_list.page(page) + + #todo: merge view counts per user and per session + #1) view count per session + update_view_count = False + if 'question_view_times' not in request.session: + request.session['question_view_times'] = {} + + last_seen = request.session['question_view_times'].get(question.id,None) + updated_when, updated_who = question.get_last_update_info() + + if updated_who != request.user: + if last_seen: + if last_seen < updated_when: + update_view_count = True + else: + update_view_count = True + + request.session['question_view_times'][question.id] = datetime.datetime.now() + + if update_view_count: + question.view_count += 1 + question.save() + + #2) question view count per user + if request.user.is_authenticated(): + try: + question_view = QuestionView.objects.get(who=request.user, question=question) + except QuestionView.DoesNotExist: + question_view = QuestionView(who=request.user, question=question) + question_view.when = datetime.datetime.now() + question_view.save() + + return render_to_response('question.html', { + "question" : question, + "question_vote" : question_vote, + "question_comment_count":question.comments.count(), + "answer" : answer_form, + "answers" : page_objects.object_list, + "user_answer_votes": user_answer_votes, + "tags" : question.tags.all(), + "tab_id" : view_id, + "favorited" : favorited, + "similar_questions" : Question.objects.get_similar_questions(question), + "context" : { + 'is_paginated' : True, + 'pages': objects_list.num_pages, + 'page': page, + 'has_previous': page_objects.has_previous(), + 'has_next': page_objects.has_next(), + 'previous': page_objects.previous_page_number(), + 'next': page_objects.next_page_number(), + 'base_url' : request.path + '?sort=%s&' % view_id, + 'extend_url' : "#sort-top" + } + }, context_instance=RequestContext(request)) + +QUESTION_REVISION_TEMPLATE = ('<h1>%(title)s</h1>\n' + '<div class="text">%(html)s</div>\n' + '<div class="tags">%(tags)s</div>') +def question_revisions(request, id): + post = get_object_or_404(Question, id=id) + revisions = list(post.revisions.all()) + revisions.reverse() + for i, revision in enumerate(revisions): + revision.html = QUESTION_REVISION_TEMPLATE % { + 'title': revision.title, + 'html': sanitize_html(markdowner.convert(revision.text)), + 'tags': ' '.join(['<a class="post-tag">%s</a>' % tag + for tag in revision.tagnames.split(' ')]), + } + if i > 0: + revisions[i].diff = htmldiff(revisions[i-1].html, revision.html) + else: + revisions[i].diff = QUESTION_REVISION_TEMPLATE % { + 'title': revisions[0].title, + 'html': sanitize_html(markdowner.convert(revisions[0].text)), + 'tags': ' '.join(['<a class="post-tag">%s</a>' % tag + for tag in revisions[0].tagnames.split(' ')]), + } + revisions[i].summary = _('initial version') + return render_to_response('revisions_question.html', { + 'post': post, + 'revisions': revisions, + }, context_instance=RequestContext(request)) + +ANSWER_REVISION_TEMPLATE = ('<div class="text">%(html)s</div>') +def answer_revisions(request, id): + post = get_object_or_404(Answer, id=id) + revisions = list(post.revisions.all()) + revisions.reverse() + for i, revision in enumerate(revisions): + revision.html = ANSWER_REVISION_TEMPLATE % { + 'html': sanitize_html(markdowner.convert(revision.text)) + } + if i > 0: + revisions[i].diff = htmldiff(revisions[i-1].html, revision.html) + else: + revisions[i].diff = revisions[i].text + revisions[i].summary = _('initial version') + return render_to_response('revisions_answer.html', { + 'post': post, + 'revisions': revisions, + }, context_instance=RequestContext(request)) +#system to collect user actions and change content and store in the database +def create_new_answer( question=None, author=None, #service subroutine - refactor + added_at=None, wiki=False,\ + text='', email_notify=False): + """refactor + non-view subroutine + initializes the answer and revision + and updates stuff in the corresponding question + probably there is more Django-ish way to do it + """ + + html = sanitize_html(markdowner.convert(text)) + + #create answer + answer = Answer( + question = question, + author = author, + added_at = added_at, + wiki = wiki, + html = html + ) + if answer.wiki: + answer.last_edited_by = answer.author + answer.last_edited_at = added_at + answer.wikified_at = added_at + + answer.save() + + #update question data + question.last_activity_at = added_at + question.last_activity_by = author + question.save() + Question.objects.update_answer_count(question) + + #update revision + AnswerRevision.objects.create( + answer = answer, + revision = 1, + author = author, + revised_at = added_at, + summary = CONST['default_version'], + text = text + ) + + #set notification/delete + if email_notify: + if author not in question.followed_by.all(): + question.followed_by.add(author) + else: + #not sure if this is necessary. ajax should take care of this... + try: + question.followed_by.remove(author) + except: + pass + +def create_new_question(title=None,author=None,added_at=None, #service subroutine - refactor + wiki=False,tagnames=None,summary=None, + text=None): + """refactor + this is not a view saves new question and revision + and maybe should become one of the methods on Question object? + """ + html = sanitize_html(markdowner.convert(text)) + question = Question( + title = title, + author = author, + added_at = added_at, + last_activity_at = added_at, + last_activity_by = author, + wiki = wiki, + tagnames = tagnames, + html = html, + summary = summary + ) + if question.wiki: + question.last_edited_by = question.author + question.last_edited_at = added_at + question.wikified_at = added_at + + question.save() + + # create the first revision + QuestionRevision.objects.create( + question = question, + revision = 1, + title = question.title, + author = author, + revised_at = added_at, + tagnames = question.tagnames, + summary = CONST['default_version'], + text = text + ) + return question + +def upload(request):#ajax upload file to a question or answer + class FileTypeNotAllow(Exception): + pass + class FileSizeNotAllow(Exception): + pass + class UploadPermissionNotAuthorized(Exception): + pass + + #<result><msg><![CDATA[%s]]></msg><error><![CDATA[%s]]></error><file_url>%s</file_url></result> + xml_template = "<result><msg><![CDATA[%s]]></msg><error><![CDATA[%s]]></error><file_url>%s</file_url></result>" + + try: + f = request.FILES['file-upload'] + # check upload permission + if not auth.can_upload_files(request.user): + raise UploadPermissionNotAuthorized + + # check file type + file_name_suffix = os.path.splitext(f.name)[1].lower() + if not file_name_suffix in settings.ALLOW_FILE_TYPES: + raise FileTypeNotAllow + + # generate new file name + new_file_name = str(time.time()).replace('.', str(random.randint(0,100000))) + file_name_suffix + # use default storage to store file + default_storage.save(new_file_name, f) + # check file size + # byte + size = default_storage.size(new_file_name) + if size > settings.ALLOW_MAX_FILE_SIZE: + default_storage.delete(new_file_name) + raise FileSizeNotAllow + + result = xml_template % ('Good', '', default_storage.url(new_file_name)) + except UploadPermissionNotAuthorized: + result = xml_template % ('', _('uploading images is limited to users with >60 reputation points'), '') + except FileTypeNotAllow: + result = xml_template % ('', _("allowed file types are 'jpg', 'jpeg', 'gif', 'bmp', 'png', 'tiff'"), '') + except FileSizeNotAllow: + result = xml_template % ('', _("maximum upload file size is %sK") % settings.ALLOW_MAX_FILE_SIZE / 1024, '') + except Exception: + result = xml_template % ('', _('Error uploading file. Please contact the site administrator. Thank you. %s' % Exception), '') + + return HttpResponse(result, mimetype="application/xml") + +#@login_required #actually you can post anonymously, but then must register +def ask(request):#view used to ask a new question + """a view to ask a new question + gives space for q title, body, tags and checkbox for to post as wiki + + user can start posting a question anonymously but then + must login/register in order for the question go be shown + """ + if request.method == "POST": + form = AskForm(request.POST) + if form.is_valid(): + + added_at = datetime.datetime.now() + title = strip_tags(form.cleaned_data['title'].strip()) + wiki = form.cleaned_data['wiki'] + tagnames = form.cleaned_data['tags'].strip() + text = form.cleaned_data['text'] + html = sanitize_html(markdowner.convert(text)) + summary = strip_tags(html)[:120] + + if request.user.is_authenticated(): + author = request.user + + question = create_new_question( + title = title, + author = author, + added_at = added_at, + wiki = wiki, + tagnames = tagnames, + summary = summary, + text = text + ) + + return HttpResponseRedirect(question.get_absolute_url()) + else: + request.session.flush() + session_key = request.session.session_key + question = AnonymousQuestion( + session_key = session_key, + title = title, + tagnames = tagnames, + wiki = wiki, + text = text, + summary = summary, + added_at = added_at, + ip_addr = request.META['REMOTE_ADDR'], + ) + question.save() + return HttpResponseRedirect(reverse('user_signin_new_question')) + else: + form = AskForm() + + tags = _get_tags_cache_json() + return render_to_response('ask.html', { + 'form' : form, + 'tags' : tags, + 'email_validation_faq_url':reverse('faq') + '#validate', + }, context_instance=RequestContext(request)) + +@login_required +def close(request, id):#close question + """view to initiate and process + question close + """ + question = get_object_or_404(Question, id=id) + if not auth.can_close_question(request.user, question): + return HttpResponse('Permission denied.') + if request.method == 'POST': + form = CloseForm(request.POST) + if form.is_valid(): + reason = form.cleaned_data['reason'] + question.closed = True + question.closed_by = request.user + question.closed_at = datetime.datetime.now() + question.close_reason = reason + question.save() + return HttpResponseRedirect(question.get_absolute_url()) + else: + form = CloseForm() + return render_to_response('close.html', { + 'form' : form, + 'question' : question, + }, context_instance=RequestContext(request)) + +@login_required +def reopen(request, id):#re-open question + """view to initiate and process + question close + """ + question = get_object_or_404(Question, id=id) + # open question + if not auth.can_reopen_question(request.user, question): + return HttpResponse('Permission denied.') + if request.method == 'POST' : + Question.objects.filter(id=question.id).update(closed=False, + closed_by=None, closed_at=None, close_reason=None) + return HttpResponseRedirect(question.get_absolute_url()) + else: + return render_to_response('reopen.html', { + 'question' : question, + }, context_instance=RequestContext(request)) + +@login_required +def edit_question(request, id):#edit or retag a question + """view to edit question + """ + question = get_object_or_404(Question, id=id) + if question.deleted and not auth.can_view_deleted_post(request.user, question): + raise Http404 + if auth.can_edit_post(request.user, question): + return _edit_question(request, question) + elif auth.can_retag_questions(request.user): + return _retag_question(request, question) + else: + raise Http404 + +def _retag_question(request, question):#non-url subview of edit question - just retag + """retag question sub-view used by + view "edit_question" + """ + if request.method == 'POST': + form = RetagQuestionForm(question, request.POST) + if form.is_valid(): + if form.has_changed(): + latest_revision = question.get_latest_revision() + retagged_at = datetime.datetime.now() + # Update the Question itself + Question.objects.filter(id=question.id).update( + tagnames = form.cleaned_data['tags'], + last_edited_at = retagged_at, + last_edited_by = request.user, + last_activity_at = retagged_at, + last_activity_by = request.user + ) + # Update the Question's tag associations + tags_updated = Question.objects.update_tags(question, + form.cleaned_data['tags'], request.user) + # Create a new revision + QuestionRevision.objects.create( + question = question, + title = latest_revision.title, + author = request.user, + revised_at = retagged_at, + tagnames = form.cleaned_data['tags'], + summary = CONST['retagged'], + text = latest_revision.text + ) + # send tags updated singal + tags_updated.send(sender=question.__class__, question=question) + + return HttpResponseRedirect(question.get_absolute_url()) + else: + form = RetagQuestionForm(question) + return render_to_response('question_retag.html', { + 'question': question, + 'form' : form, + 'tags' : _get_tags_cache_json(), + }, context_instance=RequestContext(request)) + +def _edit_question(request, question):#non-url subview of edit_question - just edit the body/title + latest_revision = question.get_latest_revision() + revision_form = None + if request.method == 'POST': + if 'select_revision' in request.POST: + # user has changed revistion number + revision_form = RevisionForm(question, latest_revision, request.POST) + if revision_form.is_valid(): + # Replace with those from the selected revision + form = EditQuestionForm(question, + QuestionRevision.objects.get(question=question, + revision=revision_form.cleaned_data['revision'])) + else: + form = EditQuestionForm(question, latest_revision, request.POST) + else: + # Always check modifications against the latest revision + form = EditQuestionForm(question, latest_revision, request.POST) + if form.is_valid(): + html = sanitize_html(markdowner.convert(form.cleaned_data['text'])) + if form.has_changed(): + edited_at = datetime.datetime.now() + tags_changed = (latest_revision.tagnames != + form.cleaned_data['tags']) + tags_updated = False + # Update the Question itself + updated_fields = { + 'title': form.cleaned_data['title'], + 'last_edited_at': edited_at, + 'last_edited_by': request.user, + 'last_activity_at': edited_at, + 'last_activity_by': request.user, + 'tagnames': form.cleaned_data['tags'], + 'summary': strip_tags(html)[:120], + 'html': html, + } + + # only save when it's checked + # because wiki doesn't allow to be edited if last version has been enabled already + # and we make sure this in forms. + if ('wiki' in form.cleaned_data and + form.cleaned_data['wiki']): + updated_fields['wiki'] = True + updated_fields['wikified_at'] = edited_at + + Question.objects.filter( + id=question.id).update(**updated_fields) + # Update the Question's tag associations + if tags_changed: + tags_updated = Question.objects.update_tags( + question, form.cleaned_data['tags'], request.user) + # Create a new revision + revision = QuestionRevision( + question = question, + title = form.cleaned_data['title'], + author = request.user, + revised_at = edited_at, + tagnames = form.cleaned_data['tags'], + text = form.cleaned_data['text'], + ) + if form.cleaned_data['summary']: + revision.summary = form.cleaned_data['summary'] + else: + revision.summary = 'No.%s Revision' % latest_revision.revision + revision.save() + + return HttpResponseRedirect(question.get_absolute_url()) + else: + + revision_form = RevisionForm(question, latest_revision) + form = EditQuestionForm(question, latest_revision) + return render_to_response('question_edit.html', { + 'question': question, + 'revision_form': revision_form, + 'form' : form, + 'tags' : _get_tags_cache_json() + }, context_instance=RequestContext(request)) + +@login_required +def edit_answer(request, id): + answer = get_object_or_404(Answer, id=id) + if answer.deleted and not auth.can_view_deleted_post(request.user, answer): + raise Http404 + elif not auth.can_edit_post(request.user, answer): + raise Http404 + else: + latest_revision = answer.get_latest_revision() + if request.method == "POST": + if 'select_revision' in request.POST: + # user has changed revistion number + revision_form = RevisionForm(answer, latest_revision, request.POST) + if revision_form.is_valid(): + # Replace with those from the selected revision + form = EditAnswerForm(answer, + AnswerRevision.objects.get(answer=answer, + revision=revision_form.cleaned_data['revision'])) + else: + form = EditAnswerForm(answer, latest_revision, request.POST) + else: + form = EditAnswerForm(answer, latest_revision, request.POST) + if form.is_valid(): + html = sanitize_html(markdowner.convert(form.cleaned_data['text'])) + if form.has_changed(): + edited_at = datetime.datetime.now() + updated_fields = { + 'last_edited_at': edited_at, + 'last_edited_by': request.user, + 'html': html, + } + Answer.objects.filter(id=answer.id).update(**updated_fields) + + revision = AnswerRevision( + answer=answer, + author=request.user, + revised_at=edited_at, + text=form.cleaned_data['text'] + ) + + if form.cleaned_data['summary']: + revision.summary = form.cleaned_data['summary'] + else: + revision.summary = 'No.%s Revision' % latest_revision.revision + revision.save() + + answer.question.last_activity_at = edited_at + answer.question.last_activity_by = request.user + answer.question.save() + + return HttpResponseRedirect(answer.get_absolute_url()) + else: + revision_form = RevisionForm(answer, latest_revision) + form = EditAnswerForm(answer, latest_revision) + return render_to_response('answer_edit.html', { + 'answer': answer, + 'revision_form': revision_form, + 'form': form, + }, context_instance=RequestContext(request)) + + +def answer(request, id):#process a new answer + question = get_object_or_404(Question, id=id) + if request.method == "POST": + form = AnswerForm(question, request.user, request.POST) + if form.is_valid(): + wiki = form.cleaned_data['wiki'] + text = form.cleaned_data['text'] + update_time = datetime.datetime.now() + + if request.user.is_authenticated(): + create_new_answer( + question=question, + author=request.user, + added_at=update_time, + wiki=wiki, + text=text, + email_notify=form.cleaned_data['email_notify'] + ) + else: + request.session.flush() + html = sanitize_html(markdowner.convert(text)) + summary = strip_tags(html)[:120] + anon = AnonymousAnswer( + question=question, + wiki=wiki, + text=text, + summary=summary, + session_key=request.session.session_key, + ip_addr=request.META['REMOTE_ADDR'], + ) + anon.save() + return HttpResponseRedirect(reverse('user_signin_new_answer')) + + return HttpResponseRedirect(question.get_absolute_url()) + +def vote(request, id):#refactor - pretty incomprehensible view used by various ajax calls +#issues: this subroutine is too long, contains many magic numbers and other issues +#it's called "vote" but many actions processed here have nothing to do with voting + """ + vote_type: + acceptAnswer : 0, + questionUpVote : 1, + questionDownVote : 2, + favorite : 4, + answerUpVote: 5, + answerDownVote:6, + offensiveQuestion : 7, + offensiveAnswer:8, + removeQuestion: 9, + removeAnswer:10 + questionSubscribeUpdates:11 + + accept answer code: + response_data['allowed'] = -1, Accept his own answer 0, no allowed - Anonymous 1, Allowed - by default + response_data['success'] = 0, failed 1, Success - by default + response_data['status'] = 0, By default 1, Answer has been accepted already(Cancel) + + vote code: + allowed = -3, Don't have enough votes left + -2, Don't have enough reputation score + -1, Vote his own post + 0, no allowed - Anonymous + 1, Allowed - by default + status = 0, By default + 1, Cancel + 2, Vote is too old to be canceled + + offensive code: + allowed = -3, Don't have enough flags left + -2, Don't have enough reputation score to do this + 0, not allowed + 1, allowed + status = 0, by default + 1, can't do it again + """ + response_data = { + "allowed": 1, + "success": 1, + "status" : 0, + "count" : 0, + "message" : '' + } + + def __can_vote(vote_score, user):#refactor - belongs to auth.py + if vote_score == 1:#refactor magic number + return auth.can_vote_up(request.user) + else: + return auth.can_vote_down(request.user) + + try: + if not request.user.is_authenticated(): + response_data['allowed'] = 0 + response_data['success'] = 0 + + elif request.is_ajax(): + question = get_object_or_404(Question, id=id) + vote_type = request.POST.get('type') + + #accept answer + if vote_type == '0': + answer_id = request.POST.get('postId') + answer = get_object_or_404(Answer, id=answer_id) + # make sure question author is current user + if question.author == request.user: + # answer user who is also question author is not allow to accept answer + if answer.author == question.author: + response_data['success'] = 0 + response_data['allowed'] = -1 + # check if answer has been accepted already + elif answer.accepted: + onAnswerAcceptCanceled(answer, request.user) + response_data['status'] = 1 + else: + # set other answers in this question not accepted first + for answer_of_question in Answer.objects.get_answers_from_question(question, request.user): + if answer_of_question != answer and answer_of_question.accepted: + onAnswerAcceptCanceled(answer_of_question, request.user) + + #make sure retrieve data again after above author changes, they may have related data + answer = get_object_or_404(Answer, id=answer_id) + onAnswerAccept(answer, request.user) + else: + response_data['allowed'] = 0 + response_data['success'] = 0 + # favorite + elif vote_type == '4': + has_favorited = False + fav_questions = FavoriteQuestion.objects.filter(question=question) + # if the same question has been favorited before, then delete it + if fav_questions is not None: + for item in fav_questions: + if item.user == request.user: + item.delete() + response_data['status'] = 1 + response_data['count'] = len(fav_questions) - 1 + if response_data['count'] < 0: + response_data['count'] = 0 + has_favorited = True + # if above deletion has not been executed, just insert a new favorite question + if not has_favorited: + new_item = FavoriteQuestion(question=question, user=request.user) + new_item.save() + response_data['count'] = FavoriteQuestion.objects.filter(question=question).count() + Question.objects.update_favorite_count(question) + + elif vote_type in ['1', '2', '5', '6']: + post_id = id + post = question + vote_score = 1 + if vote_type in ['5', '6']: + answer_id = request.POST.get('postId') + answer = get_object_or_404(Answer, id=answer_id) + post_id = answer_id + post = answer + if vote_type in ['2', '6']: + vote_score = -1 + + if post.author == request.user: + response_data['allowed'] = -1 + elif not __can_vote(vote_score, request.user): + response_data['allowed'] = -2 + elif post.votes.filter(user=request.user).count() > 0: + vote = post.votes.filter(user=request.user)[0] + # unvote should be less than certain time + if (datetime.datetime.now().day - vote.voted_at.day) >= VOTE_RULES['scope_deny_unvote_days']: + response_data['status'] = 2 + else: + voted = vote.vote + if voted > 0: + # cancel upvote + onUpVotedCanceled(vote, post, request.user) + + else: + # cancel downvote + onDownVotedCanceled(vote, post, request.user) + + response_data['status'] = 1 + response_data['count'] = post.score + elif Vote.objects.get_votes_count_today_from_user(request.user) >= VOTE_RULES['scope_votes_per_user_per_day']: + response_data['allowed'] = -3 + else: + vote = Vote(user=request.user, content_object=post, vote=vote_score, voted_at=datetime.datetime.now()) + if vote_score > 0: + # upvote + onUpVoted(vote, post, request.user) + else: + # downvote + onDownVoted(vote, post, request.user) + + votes_left = VOTE_RULES['scope_votes_per_user_per_day'] - Vote.objects.get_votes_count_today_from_user(request.user) + if votes_left <= VOTE_RULES['scope_warn_votes_left']: + response_data['message'] = u'%s votes left' % votes_left + response_data['count'] = post.score + elif vote_type in ['7', '8']: + post = question + post_id = id + if vote_type == '8': + post_id = request.POST.get('postId') + post = get_object_or_404(Answer, id=post_id) + + if FlaggedItem.objects.get_flagged_items_count_today(request.user) >= VOTE_RULES['scope_flags_per_user_per_day']: + response_data['allowed'] = -3 + elif not auth.can_flag_offensive(request.user): + response_data['allowed'] = -2 + elif post.flagged_items.filter(user=request.user).count() > 0: + response_data['status'] = 1 + else: + item = FlaggedItem(user=request.user, content_object=post, flagged_at=datetime.datetime.now()) + onFlaggedItem(item, post, request.user) + response_data['count'] = post.offensive_flag_count + # send signal when question or answer be marked offensive + mark_offensive.send(sender=post.__class__, instance=post, mark_by=request.user) + elif vote_type in ['9', '10']: + post = question + post_id = id + if vote_type == '10': + post_id = request.POST.get('postId') + post = get_object_or_404(Answer, id=post_id) + + if not auth.can_delete_post(request.user, post): + response_data['allowed'] = -2 + elif post.deleted == True: + logging.debug('debug restoring post in view') + onDeleteCanceled(post, request.user) + response_data['status'] = 1 + else: + onDeleted(post, request.user) + delete_post_or_answer.send(sender=post.__class__, instance=post, delete_by=request.user) + elif vote_type == '11':#subscribe q updates + user = request.user + if user.is_authenticated(): + if user not in question.followed_by.all(): + question.followed_by.add(user) + if settings.EMAIL_VALIDATION == 'on' and user.email_isvalid == False: + response_data['message'] = \ + _('subscription saved, %(email)s needs validation, see %(details_url)s') \ + % {'email':user.email,'details_url':reverse('faq') + '#validate'} + feed_setting = EmailFeedSetting.objects.get(subscriber=user,feed_type='q_sel') + if feed_setting.frequency == 'n': + feed_setting.frequency = 'd' + feed_setting.save() + if 'message' in response_data: + response_data['message'] += '<br/>' + response_data['message'] = _('email update frequency has been set to daily') + #response_data['status'] = 1 + #responst_data['allowed'] = 1 + else: + pass + #response_data['status'] = 0 + #response_data['allowed'] = 0 + elif vote_type == '12':#unsubscribe q updates + user = request.user + if user.is_authenticated(): + if user in question.followed_by.all(): + question.followed_by.remove(user) + else: + response_data['success'] = 0 + response_data['message'] = u'Request mode is not supported. Please try again.' + + data = simplejson.dumps(response_data) + + except Exception, e: + response_data['message'] = str(e) + data = simplejson.dumps(response_data) + return HttpResponse(data, mimetype="application/json") + +#internally grouped views - used by the tagging system +@ajax_login_required +def mark_tag(request, tag=None, **kwargs):#tagging system + action = kwargs['action'] + ts = MarkedTag.objects.filter(user=request.user, tag__name=tag) + if action == 'remove': + logging.debug('deleting tag %s' % tag) + ts.delete() + else: + reason = kwargs['reason'] + if len(ts) == 0: + try: + t = Tag.objects.get(name=tag) + mt = MarkedTag(user=request.user, reason=reason, tag=t) + mt.save() + except: + pass + else: + ts.update(reason=reason) + return HttpResponse(simplejson.dumps(''), mimetype="application/json") + +@ajax_login_required +def ajax_toggle_ignored_questions(request):#ajax tagging and tag-filtering system + if request.user.hide_ignored_questions: + new_hide_setting = False + else: + new_hide_setting = True + request.user.hide_ignored_questions = new_hide_setting + request.user.save() + +@ajax_method +def ajax_command(request):#refactor? view processing ajax commands - note "vote" and view others do it too + if 'command' not in request.POST: + return HttpResponseForbidden(mimetype="application/json") + if request.POST['command'] == 'toggle-ignored-questions': + return ajax_toggle_ignored_questions(request) + +def question_comments(request, id):#ajax handler for loading comments to question + question = get_object_or_404(Question, id=id) + user = request.user + return __comments(request, question, 'question') + +def answer_comments(request, id):#ajax handler for loading comments on answer + answer = get_object_or_404(Answer, id=id) + user = request.user + return __comments(request, answer, 'answer') + +def __comments(request, obj, type):#non-view generic ajax handler to load comments to an object + # only support get post comments by ajax now + user = request.user + if request.is_ajax(): + if request.method == "GET": + response = __generate_comments_json(obj, type, user) + elif request.method == "POST": + if auth.can_add_comments(user,obj): + comment_data = request.POST.get('comment') + comment = Comment(content_object=obj, comment=comment_data, user=request.user) + comment.save() + obj.comment_count = obj.comment_count + 1 + obj.save() + response = __generate_comments_json(obj, type, user) + else: + response = HttpResponseForbidden(mimetype="application/json") + return response + +def __generate_comments_json(obj, type, user):#non-view generates json data for the post comments + comments = obj.comments.all().order_by('id') + # {"Id":6,"PostId":38589,"CreationDate":"an hour ago","Text":"hello there!","UserDisplayName":"Jarrod Dixon","UserUrl":"/users/3/jarrod-dixon","DeleteUrl":null} + json_comments = [] + from forum.templatetags.extra_tags import diff_date + for comment in comments: + comment_user = comment.user + delete_url = "" + if user != None and auth.can_delete_comment(user, comment): + #/posts/392845/comments/219852/delete + #todo translate this url + delete_url = reverse(index) + type + "s/%s/comments/%s/delete/" % (obj.id, comment.id) + json_comments.append({"id" : comment.id, + "object_id" : obj.id, + "comment_age" : diff_date(comment.added_at), + "text" : comment.comment, + "user_display_name" : comment_user.username, + "user_url" : comment_user.get_profile_url(), + "delete_url" : delete_url + }) + + data = simplejson.dumps(json_comments) + return HttpResponse(data, mimetype="application/json") + +def delete_comment(request, object_id='', comment_id='', commented_object_type=None):#ajax handler to delete comment + response = None + commented_object = None + if commented_object_type == 'question': + commented_object = Question + elif commented_object_type == 'answer': + commented_object = Answer + + if request.is_ajax(): + comment = get_object_or_404(Comment, id=comment_id) + if auth.can_delete_comment(request.user, comment): + obj = get_object_or_404(commented_object, id=object_id) + obj.comments.remove(comment) + obj.comment_count = obj.comment_count - 1 + obj.save() + user = request.user + return __generate_comments_json(obj, commented_object_type, user) + raise PermissionDenied() + |