forum/views/writers.py

   1 # encoding:utf-8
   2 import os.path
   3 import time, datetime, random
   4 import logging
   5 from django.core.files.storage import FileSystemStorage
   6 from django.shortcuts import render_to_response, get_object_or_404
   7 from django.contrib.auth.decorators import login_required
   8 from django.http import HttpResponseRedirect, HttpResponse, Http404
   9 from django.template import RequestContext
  10 from django.utils.html import *
  11 from django.utils import simplejson
  12 from django.utils.translation import ugettext as _
  13 from django.core.urlresolvers import reverse
  14 from django.core.exceptions import PermissionDenied
  15
  16 from forum.actions import AskAction, AnswerAction, ReviseAction, RollbackAction, RetagAction
  17 from forum.forms import *
  18 from forum.models import *
  19 from forum.forms import get_next_url
  20
  21
  22 def upload(request):#ajax upload file to a question or answer
  23     class FileTypeNotAllow(Exception):
  24         pass
  25     class FileSizeNotAllow(Exception):
  26         pass
  27     class UploadPermissionNotAuthorized(Exception):
  28         pass
  29
  30     xml_template = "<result><msg><![CDATA[%s]]></msg><error><![CDATA[%s]]></error><file_url>%s</file_url></result>"
  31
  32     try:
  33         f = request.FILES['file-upload']
  34         # check upload permission
  35         if not request.user.can_upload_files():
  36             raise UploadPermissionNotAuthorized()
  37
  38         # check file type
  39         file_name_suffix = os.path.splitext(f.name)[1].lower()
  40
  41         if not file_name_suffix in ('.jpg', '.jpeg', '.gif', '.png', '.bmp', '.tiff', '.ico'):
  42             raise FileTypeNotAllow()
  43
  44         storage = FileSystemStorage(str(settings.UPFILES_FOLDER), str(settings.UPFILES_ALIAS))
  45         new_file_name = storage.save(f.name, f)
  46         # check file size
  47         # byte
  48         size = storage.size(new_file_name)
  49
  50         if size > float(settings.ALLOW_MAX_FILE_SIZE) * 1024 * 1024:
  51             storage.delete(new_file_name)
  52             raise FileSizeNotAllow()
  53
  54         result = xml_template % ('Good', '', str(settings.UPFILES_ALIAS) + new_file_name)
  55     except UploadPermissionNotAuthorized:
  56         result = xml_template % ('', _('uploading images is limited to users with >60 reputation points'), '')
  57     except FileTypeNotAllow:
  58         result = xml_template % ('', _("allowed file types are 'jpg', 'jpeg', 'gif', 'bmp', 'png', 'tiff'"), '')
  59     except FileSizeNotAllow:
  60         result = xml_template % ('', _("maximum upload file size is %sM") % settings.ALLOW_MAX_FILE_SIZE, '')
  61     except Exception, e:
  62         result = xml_template % ('', _('Error uploading file. Please contact the site administrator. Thank you. %s' % e), '')
  63
  64     return HttpResponse(result, mimetype="application/xml")
  65
  66 def ask(request):
  67     if request.POST and "text" in request.POST:
  68         form = AskForm(request.POST, user=request.user)
  69         if form.is_valid():
  70             if request.user.is_authenticated():
  71                 ask_action = AskAction(user=request.user, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data)
  72                 question = ask_action.node
  73
  74                 if settings.WIKI_ON and request.POST.get('wiki', False):
  75                     question.nstate.wiki = ask_action
  76
  77                 return HttpResponseRedirect(question.get_absolute_url())
  78             else:
  79                 request.session['temp_node_data'] = request.POST
  80                 request.session['temp_node_type'] = 'question'
  81                 return HttpResponseRedirect(reverse('auth_action_signin', kwargs={'action': 'newquestion'}))
  82     elif request.method == "POST" and "go" in request.POST:
  83         form = AskForm({'title': request.POST['q']}, user=request.user)
  84     else:
  85         form = AskForm(user=request.user)
  86
  87     return render_to_response('ask.html', {
  88         'form' : form,
  89         'email_validation_faq_url':reverse('faq') + '#validate',
  90         }, context_instance=RequestContext(request))
  91
  92 @login_required
  93 def edit_question(request, id):
  94     question = get_object_or_404(Question, id=id)
  95     if question.nis.deleted and not request.user.can_view_deleted_post(question):
  96         raise Http404
  97     if request.user.can_edit_post(question):
  98         return _edit_question(request, question)
  99     elif request.user.can_retag_questions():
 100         return _retag_question(request, question)
 101     else:
 102         raise Http404
 103
 104 def _retag_question(request, question):
 105     if request.method == 'POST':
 106         form = RetagQuestionForm(question, request.POST)
 107         if form.is_valid():
 108             if form.has_changed():
 109                 RetagAction(user=request.user, node=question, ip=request.META['REMOTE_ADDR']).save(data=dict(tagnames=form.cleaned_data['tags']))
 110
 111             return HttpResponseRedirect(question.get_absolute_url())
 112     else:
 113         form = RetagQuestionForm(question)
 114     return render_to_response('question_retag.html', {
 115         'question': question,
 116         'form' : form,
 117         #'tags' : _get_tags_cache_json(),
 118     }, context_instance=RequestContext(request))
 119
 120 def _edit_question(request, question):
 121     if request.method == 'POST':
 122         revision_form = RevisionForm(question, data=request.POST)
 123         revision_form.is_valid()
 124         revision = question.revisions.get(revision=revision_form.cleaned_data['revision'])
 125
 126         if 'select_revision' in request.POST:
 127             form = EditQuestionForm(question, request.user, revision)
 128         else:
 129             form = EditQuestionForm(question, request.user, revision, data=request.POST)
 130
 131         if not 'select_revision' in request.POST and form.is_valid():
 132             if form.has_changed():
 133                 action = ReviseAction(user=request.user, node=question, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data)
 134
 135                 if settings.WIKI_ON:
 136                     if request.POST.get('wiki', False) and not question.nis.wiki:
 137                         question.nstate.wiki = action
 138                     elif question.nis.wiki and (not request.POST.get('wiki', False)) and request.user.can_cancel_wiki(question):
 139                         question.nstate.wiki = None
 140             else:
 141                 if not revision == question.active_revision:
 142                     RollbackAction(user=request.user, node=question).save(data=dict(activate=revision))
 143
 144             return HttpResponseRedirect(question.get_absolute_url())
 145     else:
 146         revision_form = RevisionForm(question)
 147         form = EditQuestionForm(question, request.user)
 148
 149     return render_to_response('question_edit.html', {
 150         'question': question,
 151         'revision_form': revision_form,
 152         'form' : form,
 153         #'tags' : _get_tags_cache_json()
 154     }, context_instance=RequestContext(request))
 155
 156 @login_required
 157 def edit_answer(request, id):
 158     answer = get_object_or_404(Answer, id=id)
 159     if answer.deleted and not request.user.can_view_deleted_post(answer):
 160         raise Http404
 161     elif not request.user.can_edit_post(answer):
 162         raise Http404
 163
 164     if request.method == "POST":
 165         revision_form = RevisionForm(answer, data=request.POST)
 166         revision_form.is_valid()
 167         revision = answer.revisions.get(revision=revision_form.cleaned_data['revision'])
 168
 169         if 'select_revision' in request.POST:
 170             form = EditAnswerForm(answer, request.user, revision)
 171         else:
 172             form = EditAnswerForm(answer, request.user, revision, data=request.POST)
 173
 174         if not 'select_revision' in request.POST and form.is_valid():
 175             if form.has_changed():
 176                 action = ReviseAction(user=request.user, node=answer, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data)
 177
 178                 if settings.WIKI_ON:
 179                     if request.POST.get('wiki', False) and not answer.nis.wiki:
 180                         answer.nstate.wiki = action
 181                     elif answer.nis.wiki and (not request.POST.get('wiki', False)) and request.user.can_cancel_wiki(answer):
 182                         answer.nstate.wiki = None
 183             else:
 184                 if not revision == answer.active_revision:
 185                     RollbackAction(user=request.user, node=answer, ip=request.META['REMOTE_ADDR']).save(data=dict(activate=revision))
 186
 187             return HttpResponseRedirect(answer.get_absolute_url())
 188
 189     else:
 190         revision_form = RevisionForm(answer)
 191         form = EditAnswerForm(answer, request.user)
 192     return render_to_response('answer_edit.html', {
 193                               'answer': answer,
 194                               'revision_form': revision_form,
 195                               'form': form,
 196                               }, context_instance=RequestContext(request))
 197
 198 def answer(request, id):
 199     question = get_object_or_404(Question, id=id)
 200     if request.POST:
 201         form = AnswerForm(question, request.POST)
 202         if form.is_valid():
 203             if request.user.is_authenticated():
 204                 answer_action = AnswerAction(user=request.user, ip=request.META['REMOTE_ADDR']).save(dict(question=question, **form.cleaned_data))
 205                 answer = answer_action.node
 206
 207                 if settings.WIKI_ON and request.POST.get('wiki', False):
 208                     answer.nstate.wiki = answer_action
 209
 210                 return HttpResponseRedirect(answer.get_absolute_url())
 211             else:
 212                 request.session['temp_node_data'] = request.POST
 213                 request.session['temp_node_type'] = 'answer'
 214                 request.session['temp_question_id'] = id
 215                 return HttpResponseRedirect(reverse('auth_action_signin', kwargs={'action': 'newquestion'}))
 216         else:
 217             request.session['redirect_POST_data'] = request.POST
 218             return HttpResponseRedirect(question.get_absolute_url() + '#fmanswer')
 219
 220     return HttpResponseRedirect(question.get_absolute_url())
 221