apps/wiki/views.py

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