# -*- coding: utf-8 -*-
+import tempfile
+import zipfile
+
from django.template import RequestContext
from django.shortcuts import render_to_response, get_object_or_404
from django.http import HttpResponse, HttpResponseRedirect, Http404
from django.utils import simplejson
from django.utils.functional import Promise
from django.utils.encoding import force_unicode
+from django.views.decorators import cache
+from django.core.servers.basehttp import FileWrapper
from catalogue import models
from catalogue import forms
return obj
-def search(request):
- query = request.GET.get('q', '')
- tags = request.GET.get('tags', '')
- if tags == '':
- tags = []
-
- try:
- tag_list = models.Tag.get_tag_list(tags)
- tag = models.Tag.objects.get(name=query)
- except models.Tag.DoesNotExist:
- try:
- book = models.Book.objects.get(title=query)
- return HttpResponseRedirect(book.get_absolute_url())
- except models.Book.DoesNotExist:
- return HttpResponseRedirect(reverse('catalogue.views.main_page'))
- else:
- tag_list.append(tag)
- return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list',
- kwargs={'tags': '/'.join(tag.slug for tag in tag_list)}
- ))
-
-
-def tags_starting_with(request):
- try:
- prefix = request.GET['q']
- if len(prefix) < 2:
- raise KeyError
-
- books = models.Book.objects.filter(title__icontains=prefix)
- tags = models.Tag.objects.filter(name__icontains=prefix)
- if request.user.is_authenticated():
- tags = tags.filter(~Q(category='set') | Q(user=request.user))
- else:
- tags = tags.filter(~Q(category='set'))
-
- completions = [book.title for book in books] + [tag.name for tag in tags]
-
- return HttpResponse('\n'.join(completions))
-
- except KeyError:
- return HttpResponse('')
-
-
+@cache.cache_control(must_revalidate=True, max_age=3600)
def main_page(request):
if request.user.is_authenticated():
shelves = models.Tag.objects.filter(category='set', user=request.user)
context_instance=RequestContext(request))
+@cache.cache_control(must_revalidate=True, max_age=3600)
def tagged_object_list(request, tags=''):
# Prevent DoS attacks on our database
if len(tags.split('/')) > 6:
model = models.Book
shelf_is_set = (len(tags) == 1 and tags[0].category == 'set')
- theme_is_set = any(tag.category == 'theme' for tag in tags)
+ theme_is_set = len([tag for tag in tags if tag.category == 'theme']) > 0
if theme_is_set:
model = models.Fragment
context_instance=RequestContext(request))
-def logout_then_redirect(request):
- auth.logout(request)
- return HttpResponseRedirect(request.GET.get('next', '/'))
-
+# ==========
+# = Search =
+# ==========
+def search(request):
+ query = request.GET.get('q', '')
+ tags = request.GET.get('tags', '')
+ if tags == '':
+ tags = []
-@require_POST
-def register(request):
- registration_form = UserCreationForm(request.POST, prefix='registration')
- if registration_form.is_valid():
- user = registration_form.save()
- user = auth.authenticate(
- username=registration_form.cleaned_data['username'],
- password=registration_form.cleaned_data['password1']
- )
- auth.login(request, user)
- response_data = {'success': True, 'errors': {}}
+ try:
+ tag_list = models.Tag.get_tag_list(tags)
+ tag = models.Tag.objects.get(name=query)
+ except models.Tag.DoesNotExist:
+ try:
+ book = models.Book.objects.get(title=query)
+ return HttpResponseRedirect(book.get_absolute_url())
+ except models.Book.DoesNotExist:
+ return HttpResponseRedirect(reverse('catalogue.views.main_page'))
else:
- response_data = {'success': False, 'errors': registration_form.errors}
- return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
+ tag_list.append(tag)
+ return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list',
+ kwargs={'tags': '/'.join(tag.slug for tag in tag_list)}
+ ))
-@require_POST
-def login(request):
- form = AuthenticationForm(data=request.POST, prefix='login')
- if form.is_valid():
- auth.login(request, form.get_user())
- response_data = {'success': True, 'errors': {}}
- else:
- response_data = {'success': False, 'errors': form.errors}
- return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
+def tags_starting_with(request):
+ try:
+ prefix = request.GET['q']
+ if len(prefix) < 2:
+ raise KeyError
+
+ books = models.Book.objects.filter(title__icontains=prefix)
+ tags = models.Tag.objects.filter(name__icontains=prefix)
+ if request.user.is_authenticated():
+ tags = tags.filter(~Q(category='set') | Q(user=request.user))
+ else:
+ tags = tags.filter(~Q(category='set'))
+
+ completions = [book.title for book in books] + [tag.name for tag in tags]
+ return HttpResponse('\n'.join(completions))
+ except KeyError:
+ return HttpResponse('')
+
+
+# ====================
+# = Shelf management =
+# ====================
+@login_required
+@cache.never_cache
+def user_shelves(request):
+ shelves = models.Tag.objects.filter(category='set', user=request.user)
+ new_set_form = forms.NewSetForm()
+ return render_to_response('catalogue/user_shelves.html', locals(),
+ context_instance=RequestContext(request))
+
+
+@cache.never_cache
def book_sets(request, slug):
book = get_object_or_404(models.Book, slug=slug)
user_sets = models.Tag.objects.filter(category='set', user=request.user)
context_instance=RequestContext(request))
-def fragment_sets(request, id):
- fragment = get_object_or_404(models.Fragment, pk=id)
- user_sets = models.Tag.objects.filter(category='set', user=request.user)
- fragment_sets = fragment.tags.filter(category='set', user=request.user)
-
- if not request.user.is_authenticated():
- return HttpResponse('<p>Aby zarządzać swoimi półkami, musisz się zalogować.</p>')
-
- if request.method == 'POST':
- form = forms.ObjectSetsForm(fragment, request.user, request.POST)
- if form.is_valid():
- fragment.tags = ([models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']] +
- list(fragment.tags.filter(~Q(category='set') | ~Q(user=request.user))))
- if request.is_ajax():
- return HttpResponse('<p>Półki zostały zapisane.</p>')
- else:
- return HttpResponseRedirect('/')
- else:
- form = forms.ObjectSetsForm(fragment, request.user)
- new_set_form = forms.NewSetForm()
-
- return render_to_response('catalogue/fragment_sets.html', locals(),
- context_instance=RequestContext(request))
+@cache.cache_control(must_revalidate=True, max_age=1800)
+def download_shelf(request, slug):
+ """"
+ Create a ZIP archive on disk and transmit it in chunks of 8KB,
+ without loading the whole file into memory. A similar approach can
+ be used for large dynamic PDF files.
+ """
+ shelf = get_object_or_404(models.Tag, slug=slug, category='set')
+
+ # Create a ZIP archive
+ temp = tempfile.TemporaryFile()
+ archive = zipfile.ZipFile(temp, 'w', zipfile.ZIP_DEFLATED)
+ for book in models.Book.tagged.with_all(shelf):
+ filename = book.html_file.path
+ archive.write(filename, str('%s.html' % book.slug))
+ archive.close()
+
+ wrapper = FileWrapper(temp)
+ response = HttpResponse(wrapper, content_type='application/zip')
+ response['Content-Disposition'] = 'attachment; filename=%s.zip' % shelf.slug
+ response['Content-Length'] = temp.tell()
+ temp.seek(0)
+ return response
@login_required
@require_POST
+@cache.never_cache
def new_set(request):
new_set_form = forms.NewSetForm(request.POST)
if new_set_form.is_valid():
new_set = new_set_form.save(request.user)
-
+
if request.is_ajax():
return HttpResponse(u'<p>Półka <strong>%s</strong> została utworzona</p>' % new_set)
else:
return HttpResponseRedirect('/')
-
+
return render_to_response('catalogue/book_sets.html', locals(),
context_instance=RequestContext(request))
@login_required
@require_POST
+@cache.never_cache
def delete_shelf(request, slug):
user_set = get_object_or_404(models.Tag, slug=slug, category='set', user=request.user)
user_set.delete()
-
+
if request.is_ajax():
return HttpResponse(u'<p>Półka <strong>%s</strong> została usunięta</p>' % user_set.name)
else:
return HttpResponseRedirect('/')
-@login_required
-def user_shelves(request):
- shelves = models.Tag.objects.filter(category='set', user=request.user)
- new_set_form = forms.NewSetForm()
- return render_to_response('catalogue/user_shelves.html', locals(),
- context_instance=RequestContext(request))
+# ==================
+# = Authentication =
+# ==================
+@require_POST
+@cache.never_cache
+def login(request):
+ form = AuthenticationForm(data=request.POST, prefix='login')
+ if form.is_valid():
+ auth.login(request, form.get_user())
+ response_data = {'success': True, 'errors': {}}
+ else:
+ response_data = {'success': False, 'errors': form.errors}
+ return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
+
+
+@require_POST
+@cache.never_cache
+def register(request):
+ registration_form = UserCreationForm(request.POST, prefix='registration')
+ if registration_form.is_valid():
+ user = registration_form.save()
+ user = auth.authenticate(
+ username=registration_form.cleaned_data['username'],
+ password=registration_form.cleaned_data['password1']
+ )
+ auth.login(request, user)
+ response_data = {'success': True, 'errors': {}}
+ else:
+ response_data = {'success': False, 'errors': registration_form.errors}
+ return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
+
+
+@cache.never_cache
+def logout_then_redirect(request):
+ auth.logout(request)
+ return HttpResponseRedirect(request.GET.get('next', '/'))
fnp / wolnelektury.git / blobdiff