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, HttpResponseForbidden, 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.modules.decorators import decoratable
  18 from forum.forms import *
  19 from forum.models import *
  20 from forum.forms import get_next_url
  21
  22
  23 def upload(request):#ajax upload file to a question or answer
  24     class FileTypeNotAllow(Exception):
  25         pass
  26     class FileSizeNotAllow(Exception):
  27         pass
  28     class UploadPermissionNotAuthorized(Exception):
  29         pass
  30
  31     xml_template = "<result><msg><![CDATA[%s]]></msg><error><![CDATA[%s]]></error><file_url>%s</file_url></result>"
  32
  33     try:
  34         f = request.FILES['file-upload']
  35         # check upload permission
  36         if not request.user.can_upload_files():
  37             raise UploadPermissionNotAuthorized()
  38
  39         # check file type
  40         file_name_suffix = os.path.splitext(f.name)[1].lower()
  41
  42         if not file_name_suffix in ('.jpg', '.jpeg', '.gif', '.png', '.bmp', '.tiff', '.ico'):
  43             raise FileTypeNotAllow()
  44
  45         storage = FileSystemStorage(str(settings.UPFILES_FOLDER), str(settings.UPFILES_ALIAS))
  46         new_file_name = storage.save(f.name, f)
  47         # check file size
  48         # byte
  49         size = storage.size(new_file_name)
  50
  51         if size > float(settings.ALLOW_MAX_FILE_SIZE) * 1024 * 1024:
  52             storage.delete(new_file_name)
  53             raise FileSizeNotAllow()
  54
  55         result = xml_template % ('Good', '', str(settings.UPFILES_ALIAS) + new_file_name)
  56     except UploadPermissionNotAuthorized:
  57         result = xml_template % ('', _('uploading images is limited to users with >60 reputation points'), '')
  58     except FileTypeNotAllow:
  59         result = xml_template % ('', _("allowed file types are 'jpg', 'jpeg', 'gif', 'bmp', 'png', 'tiff'"), '')
  60     except FileSizeNotAllow:
  61         result = xml_template % ('', _("maximum upload file size is %sM") % settings.ALLOW_MAX_FILE_SIZE, '')
  62     except Exception, e:
  63         result = xml_template % ('', _('Error uploading file. Please contact the site administrator. Thank you. %s' % e), '')
  64
  65     return HttpResponse(result, mimetype="application/xml")
  66
  67 @decoratable
  68 def ask(request):
  69     if request.POST and "text" in request.POST:
  70         form = AskForm(request.POST, user=request.user)
  71         if form.is_valid():
  72             if request.user.is_authenticated():
  73                 ask_action = AskAction(user=request.user, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data)
  74                 question = ask_action.node
  75
  76                 if settings.WIKI_ON and request.POST.get('wiki', False):
  77                     question.nstate.wiki = ask_action
  78
  79                 return HttpResponseRedirect(question.get_absolute_url())
  80             else:
  81                 request.session['temp_node_data'] = request.POST
  82                 request.session['temp_node_type'] = 'question'
  83                 return HttpResponseRedirect(reverse('auth_action_signin', kwargs={'action': 'newquestion'}))
  84     elif request.method == "POST" and "go" in request.POST:
  85         form = AskForm({'title': request.POST['q']}, user=request.user)
  86     else:
  87         form = AskForm(user=request.user)
  88
  89     return render_to_response('ask.html', {
  90         'form' : form,
  91         'email_validation_faq_url':reverse('faq') + '#validate',
  92         }, context_instance=RequestContext(request))
  93
  94 @login_required
  95 def edit_question(request, id):
  96     question = get_object_or_404(Question, id=id)
  97     if question.nis.deleted and not request.user.can_view_deleted_post(question):
  98         raise Http404
  99     if request.user.can_edit_post(question):
 100         return _edit_question(request, question)
 101     elif request.user.can_retag_questions():
 102         return _retag_question(request, question)
 103     else:
 104         raise Http404
 105
 106 def _retag_question(request, question):
 107     if request.method == 'POST':
 108         form = RetagQuestionForm(question, request.POST)
 109         if form.is_valid():
 110             if form.has_changed():
 111                 RetagAction(user=request.user, node=question, ip=request.META['REMOTE_ADDR']).save(data=dict(tagnames=form.cleaned_data['tags']))
 112
 113             return HttpResponseRedirect(question.get_absolute_url())
 114     else:
 115         form = RetagQuestionForm(question)
 116     return render_to_response('question_retag.html', {
 117         'question': question,
 118         'form' : form,
 119         #'tags' : _get_tags_cache_json(),
 120     }, context_instance=RequestContext(request))
 121
 122 def _edit_question(request, question):
 123     if request.method == 'POST':
 124         revision_form = RevisionForm(question, data=request.POST)
 125         revision_form.is_valid()
 126         revision = question.revisions.get(revision=revision_form.cleaned_data['revision'])
 127
 128         if 'select_revision' in request.POST:
 129             form = EditQuestionForm(question, request.user, revision)
 130         else:
 131             form = EditQuestionForm(question, request.user, revision, data=request.POST)
 132
 133         if not 'select_revision' in request.POST and form.is_valid():
 134             if form.has_changed():
 135                 action = ReviseAction(user=request.user, node=question, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data)
 136
 137                 if settings.WIKI_ON:
 138                     if request.POST.get('wiki', False) and not question.nis.wiki:
 139                         question.nstate.wiki = action
 140                     elif question.nis.wiki and (not request.POST.get('wiki', False)) and request.user.can_cancel_wiki(question):
 141                         question.nstate.wiki = None
 142             else:
 143                 if not revision == question.active_revision:
 144                     RollbackAction(user=request.user, node=question).save(data=dict(activate=revision))
 145
 146             return HttpResponseRedirect(question.get_absolute_url())
 147     else:
 148         revision_form = RevisionForm(question)
 149         form = EditQuestionForm(question, request.user)
 150
 151     return render_to_response('question_edit.html', {
 152         'question': question,
 153         'revision_form': revision_form,
 154         'form' : form,
 155         #'tags' : _get_tags_cache_json()
 156     }, context_instance=RequestContext(request))
 157
 158 @login_required
 159 def edit_answer(request, id):
 160     answer = get_object_or_404(Answer, id=id)
 161     if answer.deleted and not request.user.can_view_deleted_post(answer):
 162         raise Http404
 163     elif not request.user.can_edit_post(answer):
 164         raise Http404
 165
 166     if request.method == "POST":
 167         revision_form = RevisionForm(answer, data=request.POST)
 168         revision_form.is_valid()
 169         revision = answer.revisions.get(revision=revision_form.cleaned_data['revision'])
 170
 171         if 'select_revision' in request.POST:
 172             form = EditAnswerForm(answer, request.user, revision)
 173         else:
 174             form = EditAnswerForm(answer, request.user, revision, data=request.POST)
 175
 176         if not 'select_revision' in request.POST and form.is_valid():
 177             if form.has_changed():
 178                 action = ReviseAction(user=request.user, node=answer, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data)
 179
 180                 if settings.WIKI_ON:
 181                     if request.POST.get('wiki', False) and not answer.nis.wiki:
 182                         answer.nstate.wiki = action
 183                     elif answer.nis.wiki and (not request.POST.get('wiki', False)) and request.user.can_cancel_wiki(answer):
 184                         answer.nstate.wiki = None
 185             else:
 186                 if not revision == answer.active_revision:
 187                     RollbackAction(user=request.user, node=answer, ip=request.META['REMOTE_ADDR']).save(data=dict(activate=revision))
 188
 189             return HttpResponseRedirect(answer.get_absolute_url())
 190
 191     else:
 192         revision_form = RevisionForm(answer)
 193         form = EditAnswerForm(answer, request.user)
 194     return render_to_response('answer_edit.html', {
 195                               'answer': answer,
 196                               'revision_form': revision_form,
 197                               'form': form,
 198                               }, context_instance=RequestContext(request))
 199
 200 @decoratable
 201 def answer(request, id):
 202     question = get_object_or_404(Question, id=id)
 203     if request.POST:
 204         form = AnswerForm(question, request.POST)
 205         if form.is_valid():
 206             if request.user.is_authenticated():
 207                 answer_action = AnswerAction(user=request.user, ip=request.META['REMOTE_ADDR']).save(dict(question=question, **form.cleaned_data))
 208                 answer = answer_action.node
 209
 210                 if settings.WIKI_ON and request.POST.get('wiki', False):
 211                     answer.nstate.wiki = answer_action
 212
 213                 return HttpResponseRedirect(answer.get_absolute_url())
 214             else:
 215                 request.session['temp_node_data'] = request.POST
 216                 request.session['temp_node_type'] = 'answer'
 217                 request.session['temp_question_id'] = id
 218                 return HttpResponseRedirect(reverse('auth_action_signin', kwargs={'action': 'newquestion'}))
 219         else:
 220             request.session['redirect_POST_data'] = request.POST
 221             return HttpResponseRedirect(question.get_absolute_url() + '#fmanswer')
 222
 223     return HttpResponseRedirect(question.get_absolute_url())
 224