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.utils.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)
  71         if form.is_valid():
  72             if request.user.is_authenticated():
  73                 question = AskAction(user=request.user, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data).node
  74                 return HttpResponseRedirect(question.get_absolute_url())
  75             else:
  76                 request.session['temp_node_data'] = request.POST
  77                 request.session['temp_node_type'] = 'question'
  78                 return HttpResponseRedirect(reverse('auth_action_signin', kwargs={'action': 'newquestion'}))
  79     elif request.method == "POST" and "go" in request.POST:
  80         form = AskForm({'title': request.POST['q']})
  81     else:
  82         form = AskForm()
  83
  84     #tags = _get_tags_cache_json()
  85     return render_to_response('ask.html', {
  86         'form' : form,
  87         #'tags' : tags,
  88         'email_validation_faq_url':reverse('faq') + '#validate',
  89         }, context_instance=RequestContext(request))
  90
  91 @login_required
  92 def edit_question(request, id):
  93     question = get_object_or_404(Question, id=id)
  94     if question.deleted and not request.user.can_view_deleted_post(question):
  95         raise Http404
  96     if request.user.can_edit_post(question):
  97         return _edit_question(request, question)
  98     elif request.user.can_retag_questions():
  99         return _retag_question(request, question)
 100     else:
 101         raise Http404
 102
 103 def _retag_question(request, question):
 104     if request.method == 'POST':
 105         form = RetagQuestionForm(question, request.POST)
 106         if form.is_valid():
 107             if form.has_changed():
 108                 RetagAction(user=request.user, node=question, ip=request.META['REMOTE_ADDR']).save(data=dict(tagnames=form.cleaned_data['tags']))
 109
 110             return HttpResponseRedirect(question.get_absolute_url())
 111     else:
 112         form = RetagQuestionForm(question)
 113     return render_to_response('question_retag.html', {
 114         'question': question,
 115         'form' : form,
 116         #'tags' : _get_tags_cache_json(),
 117     }, context_instance=RequestContext(request))
 118
 119 def _edit_question(request, question):
 120     if request.method == 'POST':
 121         revision_form = RevisionForm(question, data=request.POST)
 122         revision_form.is_valid()
 123         revision = question.revisions.get(revision=revision_form.cleaned_data['revision'])
 124
 125         if 'select_revision' in request.POST:
 126             form = EditQuestionForm(question, revision)
 127         else:
 128             form = EditQuestionForm(question, revision, data=request.POST)
 129
 130         if not 'select_revision' in request.POST and form.is_valid():
 131             if form.has_changed():
 132                 ReviseAction(user=request.user, node=question, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data)
 133             else:
 134                 if not revision == question.active_revision:
 135                     RollbackAction(user=request.user, node=question).save(data=dict(activate=revision))
 136
 137             return HttpResponseRedirect(question.get_absolute_url())
 138     else:
 139         revision_form = RevisionForm(question)
 140         form = EditQuestionForm(question)
 141
 142     return render_to_response('question_edit.html', {
 143         'question': question,
 144         'revision_form': revision_form,
 145         'form' : form,
 146         #'tags' : _get_tags_cache_json()
 147     }, context_instance=RequestContext(request))
 148
 149 @login_required
 150 def edit_answer(request, id):
 151     answer = get_object_or_404(Answer, id=id)
 152     if answer.deleted and not request.user.can_view_deleted_post(answer):
 153         raise Http404
 154     elif not request.user.can_edit_post(answer):
 155         raise Http404
 156
 157     if request.method == "POST":
 158         revision_form = RevisionForm(answer, data=request.POST)
 159         revision_form.is_valid()
 160         revision = answer.revisions.get(revision=revision_form.cleaned_data['revision'])
 161
 162         if 'select_revision' in request.POST:
 163             form = EditAnswerForm(answer, revision)
 164         else:
 165             form = EditAnswerForm(answer, revision, data=request.POST)
 166
 167         if not 'select_revision' in request.POST and form.is_valid():
 168             if form.has_changed():
 169                 ReviseAction(user=request.user, node=answer, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data)
 170             else:
 171                 if not revision == answer.active_revision:
 172                     RollbackAction(user=request.user, node=answer, ip=request.META['REMOTE_ADDR']).save(data=dict(activate=revision))
 173
 174             return HttpResponseRedirect(answer.get_absolute_url())
 175
 176     else:
 177         revision_form = RevisionForm(answer)
 178         form = EditAnswerForm(answer)
 179     return render_to_response('answer_edit.html', {
 180                               'answer': answer,
 181                               'revision_form': revision_form,
 182                               'form': form,
 183                               }, context_instance=RequestContext(request))
 184
 185 @decoratable
 186 def answer(request, id):
 187     question = get_object_or_404(Question, id=id)
 188     if request.POST:
 189         form = AnswerForm(question, request.POST)
 190         if form.is_valid():
 191             if request.user.is_authenticated():
 192                 answer = AnswerAction(user=request.user, ip=request.META['REMOTE_ADDR']).save(dict(question=question, **form.cleaned_data)).node
 193                 return HttpResponseRedirect(answer.get_absolute_url())
 194             else:
 195                 request.session['temp_node_data'] = request.POST
 196                 request.session['temp_node_type'] = 'answer'
 197                 request.session['temp_question_id'] = id
 198                 return HttpResponseRedirect(reverse('auth_action_signin', kwargs={'action': 'newquestion'}))
 199         else:
 200             request.session['redirect_POST_data'] = request.POST
 201             return HttpResponseRedirect(question.get_absolute_url() + '#fmanswer')
 202
 203     return HttpResponseRedirect(question.get_absolute_url())
 204