apps/wiki/views.py

   1 from datetime import datetime
   2 import os
   3 import logging
   4 import urllib
   5
   6 from django.conf import settings
   7 from django.core.urlresolvers import reverse
   8 from django import http
   9 from django.http import Http404, HttpResponseForbidden
  10 from django.middleware.gzip import GZipMiddleware
  11 from django.utils.decorators import decorator_from_middleware
  12 from django.utils.encoding import smart_unicode
  13 from django.utils.formats import localize
  14 from django.utils.translation import ugettext as _
  15 from django.views.decorators.http import require_POST, require_GET
  16 from django.shortcuts import get_object_or_404, render
  17 from django.utils import simplejson
  18 from django.contrib.auth.decorators import login_required
  19
  20 from catalogue.models import Book, Chunk, Template
  21 import nice_diff
  22 from wiki import forms
  23 from wiki.helpers import (JSONResponse, JSONFormInvalid, JSONServerError,
  24                 ajax_require_permission)
  25 from wiki.models import Theme
  26
  27 #
  28 # Quick hack around caching problems, TODO: use ETags
  29 #
  30 from django.views.decorators.cache import never_cache
  31
  32 logger = logging.getLogger("fnp.wiki")
  33
  34 MAX_LAST_DOCS = 10
  35
  36
  37 def get_history(chunk):
  38     changes = []
  39     for change in chunk.history():
  40         changes.append({
  41                 "version": change.revision,
  42                 "description": change.description,
  43                 "author": change.author_str(),
  44                 "date": localize(change.created_at),
  45                 "publishable": _("Publishable") + "\n" if change.publishable else "",
  46                 "tag": ',\n'.join(unicode(tag) for tag in change.tags.all()),
  47                 "published": _("Published") + ": " + \
  48                     localize(change.publish_log.order_by('-book_record__timestamp')[0].book_record.timestamp) \
  49                     if change.publish_log.exists() else "",
  50             })
  51     return changes
  52
  53
  54 @never_cache
  55 # @login_required
  56 def editor(request, slug, chunk=None, template_name='wiki/bootstrap.html'):
  57     try:
  58         chunk = Chunk.get(slug, chunk)
  59     except Chunk.MultipleObjectsReturned:
  60         # TODO: choice page
  61         raise Http404
  62     except Chunk.DoesNotExist:
  63         if chunk is None:
  64             try:
  65                 book = Book.objects.get(slug=slug)
  66             except Book.DoesNotExist:
  67                 return http.HttpResponseRedirect(reverse("catalogue_create_missing", args=[slug]))
  68         else:
  69             raise Http404
  70     if not chunk.book.accessible(request):
  71         return HttpResponseForbidden("Not authorized.")
  72
  73     access_time = datetime.now()
  74     last_books = request.session.get("wiki_last_books", {})
  75     last_books[slug, chunk.slug] = {
  76         'time': access_time,
  77         'title': chunk.pretty_name(),
  78         }
  79
  80     if len(last_books) > MAX_LAST_DOCS:
  81         oldest_key = min(last_books, key=lambda x: last_books[x]['time'])
  82         del last_books[oldest_key]
  83     request.session['wiki_last_books'] = last_books
  84
  85     save_form = forms.DocumentTextSaveForm(user=request.user, chunk=chunk, prefix="textsave")
  86     try:
  87         version = int(request.GET.get('version', None))
  88     except:
  89         version = None
  90     if version:
  91         text = chunk.at_revision(version).materialize()
  92     else:
  93         text = chunk.materialize()
  94     return render(request, template_name, {
  95         'serialized_document_data': simplejson.dumps({
  96             'document': text,
  97             'document_id': chunk.id,
  98             'title': chunk.book.title,
  99             'history': get_history(chunk),
 100             'version': version or chunk.revision(),
 101             'stage': chunk.stage.name if chunk.stage else None,
 102             'assignment': chunk.user.username if chunk.user else None
 103         }),
 104         'serialized_templates': simplejson.dumps([
 105             {'id': t.id, 'name': t.name, 'content': t.content} for t in Template.objects.filter(is_partial=True)
 106         ]),
 107         'forms': {
 108             "text_save": save_form,
 109             "text_revert": forms.DocumentTextRevertForm(prefix="textrevert")
 110         },
 111         'tags': list(save_form.fields['stage_completed'].choices),
 112         'can_pubmark': request.user.has_perm('catalogue.can_pubmark'),
 113         'slug': chunk.book.slug
 114     })
 115
 116
 117 @require_GET
 118 def editor_readonly(request, slug, chunk=None, template_name='wiki/document_details_readonly.html'):
 119     try:
 120         chunk = Chunk.get(slug, chunk)
 121         revision = request.GET['revision']
 122     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist, KeyError):
 123         raise Http404
 124     if not chunk.book.accessible(request):
 125         return HttpResponseForbidden("Not authorized.")
 126
 127     access_time = datetime.now()
 128     last_books = request.session.get("wiki_last_books", {})
 129     last_books[slug, chunk.slug] = {
 130         'time': access_time,
 131         'title': chunk.book.title,
 132         }
 133
 134     if len(last_books) > MAX_LAST_DOCS:
 135         oldest_key = min(last_books, key=lambda x: last_books[x]['time'])
 136         del last_books[oldest_key]
 137     request.session['wiki_last_books'] = last_books
 138
 139     return render(request, template_name, {
 140         'chunk': chunk,
 141         'revision': revision,
 142         'readonly': True,
 143         'REDMINE_URL': settings.REDMINE_URL,
 144     })
 145
 146
 147 @never_cache
 148 @decorator_from_middleware(GZipMiddleware)
 149 def text(request, chunk_id):
 150     doc = get_object_or_404(Chunk, pk=chunk_id)
 151     if not doc.book.accessible(request):
 152         return HttpResponseForbidden("Not authorized.")
 153
 154     if request.method == 'POST':
 155         form = forms.DocumentTextSaveForm(request.POST, user=request.user, chunk=doc, prefix="textsave")
 156         if form.is_valid():
 157             if request.user.is_authenticated():
 158                 author = request.user
 159             else:
 160                 author = None
 161             text = form.cleaned_data['text']
 162             parent_revision = form.cleaned_data['parent_revision']
 163             if parent_revision is not None:
 164                 parent = doc.at_revision(parent_revision)
 165             else:
 166                 parent = None
 167             stage = form.cleaned_data['stage_completed']
 168             tags = [stage] if stage else []
 169             publishable = (form.cleaned_data['publishable'] and
 170                     request.user.has_perm('catalogue.can_pubmark'))
 171             doc.commit(author=author,
 172                        text=text,
 173                        parent=parent,
 174                        description=form.cleaned_data['comment'],
 175                        tags=tags,
 176                        author_name=form.cleaned_data['author_name'],
 177                        author_email=form.cleaned_data['author_email'],
 178                        publishable=publishable,
 179                        )
 180             doc.book.for_cybernauts = form.cleaned_data['for_cybernauts']
 181             doc.book.save()
 182             revision = doc.revision()
 183             return JSONResponse({
 184                 'text': doc.materialize() if parent_revision != revision else None,
 185                 'version': revision,
 186                 'stage': doc.stage.name if doc.stage else None,
 187                 'assignment': doc.user.username if doc.user else None
 188             })
 189         else:
 190             return JSONFormInvalid(form)
 191     else:
 192         revision = request.GET.get("revision", None)
 193
 194         try:
 195             revision = int(revision)
 196         except (ValueError, TypeError):
 197             revision = doc.revision()
 198
 199         if revision is not None:
 200             text = doc.at_revision(revision).materialize()
 201         else:
 202             text = ''
 203
 204         return JSONResponse({
 205             'text': text,
 206             'meta': {},
 207             'revision': revision,
 208         })
 209
 210
 211 @never_cache
 212 @require_POST
 213 def revert(request, chunk_id):
 214     form = forms.DocumentTextRevertForm(request.POST, prefix="textrevert")
 215     if form.is_valid():
 216         doc = get_object_or_404(Chunk, pk=chunk_id)
 217         if not doc.book.accessible(request):
 218             return HttpResponseForbidden("Not authorized.")
 219
 220         revision = form.cleaned_data['revision']
 221
 222         comment = form.cleaned_data['comment']
 223         comment += "\n#revert to %s" % revision
 224
 225         if request.user.is_authenticated():
 226             author = request.user
 227         else:
 228             author = None
 229
 230         before = doc.revision()
 231         logger.info("Reverting %s to %s", chunk_id, revision)
 232         doc.at_revision(revision).revert(author=author, description=comment)
 233
 234         return JSONResponse({
 235             'document': doc.materialize() if before != doc.revision() else None,
 236             'version': doc.revision(),
 237         })
 238     else:
 239         return JSONFormInvalid(form)
 240
 241
 242 @never_cache
 243 def gallery(request, directory):
 244     try:
 245         base_url = ''.join((
 246                         smart_unicode(settings.MEDIA_URL),
 247                         smart_unicode(settings.IMAGE_DIR),
 248                         smart_unicode(directory)))
 249
 250         base_dir = os.path.join(
 251                     smart_unicode(settings.MEDIA_ROOT),
 252                     smart_unicode(settings.IMAGE_DIR),
 253                     smart_unicode(directory))
 254
 255         def map_to_url(filename):
 256             return urllib.quote("%s/%s" % (base_url, smart_unicode(filename)))
 257
 258         def is_image(filename):
 259             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 260
 261         images = [map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f)]
 262         images.sort()
 263
 264         if not request.user.is_authenticated():
 265             return HttpResponseForbidden("Not authorized.")
 266
 267         return JSONResponse(images)
 268     except (IndexError, OSError):
 269         logger.exception("Unable to fetch gallery")
 270         raise http.Http404
 271
 272
 273 @never_cache
 274 def diff(request, chunk_id):
 275     revA = int(request.GET.get('from', 0))
 276     revB = int(request.GET.get('to', 0))
 277
 278     if revA > revB:
 279         revA, revB = revB, revA
 280
 281     if revB == 0:
 282         revB = None
 283
 284     doc = get_object_or_404(Chunk, pk=chunk_id)
 285     if not doc.book.accessible(request):
 286         return HttpResponseForbidden("Not authorized.")
 287
 288     # allow diff from the beginning
 289     if revA:
 290         docA = doc.at_revision(revA).materialize()
 291     else:
 292         docA = ""
 293     docB = doc.at_revision(revB).materialize()
 294
 295     return http.HttpResponse(nice_diff.html_diff_table(docA.splitlines(),
 296                                          docB.splitlines(), context=3))
 297
 298
 299 @never_cache
 300 def revision(request, chunk_id):
 301     doc = get_object_or_404(Chunk, pk=chunk_id)
 302     if not doc.book.accessible(request):
 303         return HttpResponseForbidden("Not authorized.")
 304     return http.HttpResponse(str(doc.revision()))
 305
 306
 307 @never_cache
 308 def history(request, chunk_id):
 309     # TODO: pagination
 310     doc = get_object_or_404(Chunk, pk=chunk_id)
 311     if not doc.book.accessible(request):
 312         return HttpResponseForbidden("Not authorized.")
 313
 314     return JSONResponse(get_history(doc))
 315
 316
 317 @require_POST
 318 @ajax_require_permission('catalogue.can_pubmark')
 319 def pubmark(request, chunk_id):
 320     form = forms.DocumentPubmarkForm(request.POST, prefix="pubmark")
 321     if form.is_valid():
 322         doc = get_object_or_404(Chunk, pk=chunk_id)
 323         if not doc.book.accessible(request):
 324             return HttpResponseForbidden("Not authorized.")
 325
 326         revision = form.cleaned_data['revision']
 327         publishable = form.cleaned_data['publishable']
 328         change = doc.at_revision(revision)
 329         if publishable != change.publishable:
 330             change.set_publishable(publishable)
 331             return JSONResponse({"message": _("Revision marked")})
 332         else:
 333             return JSONResponse({"message": _("Nothing changed")})
 334     else:
 335         return JSONFormInvalid(form)
 336
 337
 338 def themes(request):
 339     prefix = request.GET.get('q', '')
 340     return http.HttpResponse('\n'.join([str(t) for t in Theme.objects.filter(name__istartswith=prefix)]))