apps/wiki/views.py

   1 import os
   2
   3 from django.conf import settings
   4 from django.views.generic.simple import direct_to_template
   5 from django.http import HttpResponse, Http404
   6 from django.utils import simplejson as json
   7
   8 from wiki.models import Document, DocumentNotFound, getstorage
   9 from wiki.forms import DocumentForm
  10 from datetime import datetime
  11 from django.utils.encoding import smart_unicode
  12 import wlapi
  13
  14 #
  15 # Quick hack around caching problems, TODO: use ETags
  16 #
  17 from django.views.decorators.cache import never_cache
  18
  19 import logging
  20 logger = logging.getLogger("fnp.peanut.api")
  21
  22 import nice_diff
  23 import operator
  24
  25 MAX_LAST_DOCS = 10
  26
  27 class DateTimeEncoder(json.JSONEncoder):
  28      def default(self, obj):
  29          if isinstance(obj, datetime):
  30              return datetime.ctime(obj) + " " + (datetime.tzname(obj) or 'GMT')
  31          return json.JSONEncoder.default(self, obj)
  32
  33 @never_cache
  34 def document_list(request, template_name = 'wiki/document_list.html'):
  35     # TODO: find a way to cache "Storage All"
  36     return direct_to_template(request, template_name, extra_context = {
  37         'document_list': getstorage().all(),
  38         'last_docs': sorted(request.session.get("wiki_last_docs", {}).items(),
  39                         key=operator.itemgetter(1), reverse = True)
  40     })
  41
  42 @never_cache
  43 def document_detail(request, name, template_name = 'wiki/document_details.html'):
  44
  45     try:
  46         document = getstorage().get(name)
  47     except DocumentNotFound:
  48         raise Http404
  49
  50     access_time = datetime.now()
  51     last_documents = request.session.get("wiki_last_docs", {})
  52     last_documents[name] = access_time
  53
  54     if len(last_documents) > MAX_LAST_DOCS:
  55         oldest_key = min(last_documents, key = last_documents.__getitem__)
  56         del last_documents[oldest_key]
  57     request.session['wiki_last_docs'] = last_documents
  58
  59     return direct_to_template(request, template_name, extra_context = {
  60         'document': document,
  61     })
  62
  63 @never_cache
  64 def document_text(request, name):
  65     try:
  66         document = getstorage().get(name)
  67     except DocumentNotFound:
  68         raise Http404
  69
  70     if request.method == 'POST':
  71         form = DocumentForm(request.POST, instance = document)
  72         if form.is_valid():
  73             document = form.save(document_author = request.user.username)
  74             return HttpResponse(json.dumps({'text': document.plain_text, 'meta': document.meta(), 'revision': document.revision()}))
  75         else:
  76             return HttpResponse(json.dumps({'errors': form.errors}))
  77     else:
  78         return HttpResponse(json.dumps({'text': document.plain_text, 'meta': document.meta(), 'revision': document.revision()}))
  79
  80
  81
  82 @never_cache
  83 def document_gallery(request, directory):
  84     try:
  85         base_dir = os.path.join(
  86                     smart_unicode(settings.MEDIA_ROOT),
  87                     smart_unicode(settings.FILEBROWSER_DIRECTORY),
  88                     smart_unicode(directory) )
  89
  90         def map_to_url(filename):
  91
  92             return '%s%s%s/%s' % (
  93                         smart_unicode(settings.MEDIA_URL),
  94                         smart_unicode(settings.FILEBROWSER_DIRECTORY),
  95                         smart_unicode(directory),
  96                         smart_unicode(filename)
  97             )
  98
  99         def is_image(filename):
 100             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 101
 102         images = [ map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f) ]
 103         images.sort()
 104         return HttpResponse(json.dumps(images))
 105     except (IndexError, OSError), exc:
 106         import traceback
 107         traceback.print_exc()
 108
 109         raise Http404
 110
 111 @never_cache
 112 def document_diff(request, name, revA, revB):
 113     storage = getstorage()
 114     docA = storage.get(name, int(revA))
 115     docB = storage.get(name, int(revB))
 116
 117
 118     return HttpResponse(nice_diff.html_diff_table(docA.plain_text.splitlines(),
 119                                          docB.plain_text.splitlines()) )
 120
 121 @never_cache
 122 def document_history(request, name):
 123     storage = getstorage()
 124
 125     return HttpResponse(
 126                 json.dumps(storage.history(name), cls=DateTimeEncoder),
 127                 mimetype='application/json')
 128
 129
 130 @never_cache
 131 def document_publish(request, name, version):
 132     storage = getstorage()
 133
 134     # get the document
 135     try:
 136         document = storage.get(name, revision = int(version))
 137     except DocumentNotFound:
 138         raise Http404
 139
 140     api = wlapi.WLAPI(settings.WL_API_CONFIG)
 141     try:
 142         result = {"success": True, "result": api.publish_book(document)}
 143     except wlapi.APICallException, e:
 144         result = {"success": False, "reason": str(e)}
 145
 146     return HttpResponse( json.dumps(result), mimetype='application/json')