# -*- coding: utf-8 -*-
+import tempfile
+import zipfile
+import sys
+import pprint
+import traceback
+
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.core.urlresolvers import reverse
from django.db.models import Q
-from django.contrib.auth.decorators import login_required
+from django.contrib.auth.decorators import login_required, user_passes_test
from django.utils.datastructures import SortedDict
from django.views.decorators.http import require_POST
from django.contrib import auth
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 catalogue import models
from catalogue import forms
from newtagging import views as newtagging_views
+staff_required = user_passes_test(lambda user: user.is_staff)
+
+
class LazyEncoder(simplejson.JSONEncoder):
def default(self, obj):
if isinstance(obj, Promise):
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('')
-
-
def main_page(request):
if request.user.is_authenticated():
shelves = models.Tag.objects.filter(category='set', user=request.user)
def tagged_object_list(request, tags=''):
+ # Prevent DoS attacks on our database
+ if len(tags.split('/')) > 6:
+ raise Http404
+
try:
tags = models.Tag.get_tag_list(tags)
except models.Tag.DoesNotExist:
raise Http404
+ if len([tag for tag in tags if tag.category == 'book']):
+ raise Http404
+
model = models.Book
- shelf_is_set = any(tag.category == 'set' for tag in tags)
- theme_is_set = any(tag.category == 'theme' for tag in tags)
+ shelf = [tag for tag in tags if tag.category == 'set']
+ shelf_is_set = (len(tags) == 1 and tags[0].category == 'set')
+ theme_is_set = len([tag for tag in tags if tag.category == 'theme']) > 0
if theme_is_set:
model = models.Fragment
- extra_where = 'NOT catalogue_tag.category = "set"'
+ user_is_owner = (len(shelf) and request.user.is_authenticated() and request.user == shelf[0].user)
+
+ extra_where = 'catalogue_tag.category NOT IN ("set", "book")'
related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
categories = split_tags(related_tags)
+ if not (theme_is_set or shelf_is_set):
+ model=models.Book.objects.filter(parent=None)
+
return newtagging_views.tagged_object_list(
request,
tag_model=models.Tag,
queryset_or_model=model,
tags=tags,
template_name='catalogue/tagged_object_list.html',
- extra_context = {'categories': categories, 'shelf_is_set': shelf_is_set },
+ extra_context = {'categories': categories, 'shelf_is_set': shelf_is_set, 'user_is_owner': user_is_owner },
)
+def book_fragments(request, book_slug, theme_slug):
+ book = get_object_or_404(models.Book, slug=book_slug)
+ book_tag = get_object_or_404(models.Tag, slug='l-' + book_slug)
+ theme = get_object_or_404(models.Tag, slug=theme_slug)
+ fragments = models.Fragment.tagged.with_all([book_tag, theme])
+
+ form = forms.SearchForm()
+ return render_to_response('catalogue/book_fragments.html', locals(),
+ context_instance=RequestContext(request))
+
+
def book_detail(request, slug):
book = get_object_or_404(models.Book, slug=slug)
+ book_tag = get_object_or_404(models.Tag, slug = 'l-' + slug)
tags = list(book.tags.filter(~Q(category='set')))
categories = split_tags(tags)
+ book_children = book.children.all().order_by('parent_number')
+ extra_where = 'catalogue_tag.category = "theme"'
+ book_themes = models.Tag.objects.related_for_model(book_tag, models.Fragment, counts=True, extra={'where': [extra_where]})
+ extra_info = book.get_extra_info_value()
form = forms.SearchForm()
return render_to_response('catalogue/book_detail.html', locals(),
context_instance=RequestContext(request))
-def logout_then_redirect(request):
- auth.logout(request)
- return HttpResponseRedirect(request.GET.get('next', '/'))
+def book_text(request, slug):
+ book = get_object_or_404(models.Book, slug=slug)
+ book_themes = {}
+ for fragment in book.fragments.all():
+ for theme in fragment.tags.filter(category='theme'):
+ book_themes.setdefault(theme, []).append(fragment)
+
+ book_themes = book_themes.items()
+ book_themes.sort(key=lambda s: s[0].sort_key)
+ return render_to_response('catalogue/book_text.html', locals(),
+ context_instance=RequestContext(request))
-@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': {}}
+# ==========
+# = Search =
+# ==========
+def _tags_starting_with(prefix, user):
+ books = models.Book.objects.filter(title__icontains=prefix)
+ tags = models.Tag.objects.filter(name__icontains=prefix)
+ if user.is_authenticated():
+ tags = tags.filter(~Q(category='book') & (~Q(category='set') | Q(user=user)))
else:
- response_data = {'success': False, 'errors': registration_form.errors}
- return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
+ tags = tags.filter(~Q(category='book') & ~Q(category='set'))
+ return list(books) + list(tags)
+
+
+def search(request):
+ tags = request.GET.get('tags', '')
+ prefix = request.GET.get('q', '')
+ # Prefix must have at least 2 characters
+ if len(prefix) < 2:
+ return HttpResponse('')
+
+ try:
+ tag_list = models.Tag.get_tag_list(tags)
+ except:
+ tag_list = []
+
+ result = _tags_starting_with(prefix, request.user)
+ if len(result) > 0:
+ tag = result[0]
+ if isinstance(tag, models.Book):
+ return HttpResponseRedirect(tag.get_absolute_url())
+ 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):
+ prefix = request.GET.get('q', '')
+ # Prefix must have at least 2 characters
+ if len(prefix) < 2:
+ return HttpResponse('')
+
+ return HttpResponse('\n'.join(tag.name for tag in _tags_starting_with(prefix, request.user)))
-@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))
+# ====================
+# = 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)
if request.method == 'POST':
form = forms.ObjectSetsForm(book, request.user, request.POST)
if form.is_valid():
- book.tags = ([models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']] +
- list(book.tags.filter(~Q(category='set') | ~Q(user=request.user))))
+ old_shelves = list(book.tags.filter(category='set'))
+ new_shelves = [models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']]
+
+ for shelf in [shelf for shelf in old_shelves if shelf not in new_shelves]:
+ shelf.book_count -= 1
+ shelf.save()
+
+ for shelf in [shelf for shelf in new_shelves if shelf not in old_shelves]:
+ shelf.book_count += 1
+ shelf.save()
+
+ book.tags = new_shelves + list(book.tags.filter(~Q(category='set') | ~Q(user=request.user)))
if request.is_ajax():
return HttpResponse('<p>Półki zostały zapisane.</p>')
else:
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)
+@login_required
+@require_POST
+@cache.never_cache
+def remove_from_shelf(request, shelf, book):
+ book = get_object_or_404(models.Book, slug=book)
+ shelf = get_object_or_404(models.Tag, slug=shelf, category='set', user=request.user)
+
+ models.Tag.objects.remove_tag(book, shelf)
+
+ shelf.book_count -= 1
+ shelf.save()
+
+ return HttpResponse('Usunieto')
- 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>')
+@cache.never_cache
+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 = temp = tempfile.TemporaryFile()
+ archive = zipfile.ZipFile(temp, 'w')
+
+ # Collect all books to include in ZIP archive
+ def collect_books(books):
+ result = []
+ for book in books:
+ if len(book.children.all()) == 0:
+ result.append(book)
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))
+ result += collect_books(book.children.all())
+ return result
+
+ for book in collect_books(models.Book.tagged.with_all(shelf)):
+ if book.pdf_file:
+ filename = book.pdf_file.path
+ archive.write(filename, str('%s.pdf' % book.slug))
+ if book.odt_file:
+ filename = book.odt_file.path
+ archive.write(filename, str('%s.odt' % book.slug))
+ if book.txt_file:
+ filename = book.txt_file.path
+ archive.write(filename, str('%s.txt' % book.slug))
+ archive.close()
+
+ response = HttpResponse(content_type='application/zip', mimetype='application/x-zip-compressed')
+ response['Content-Disposition'] = 'attachment; filename=%s.zip' % shelf.sort_key
+ response['Content-Length'] = temp.tell()
+
+ temp.seek(0)
+ response.write(temp.read())
+ 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))
+
+ return HttpResponseRedirect('/')
@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', '/'))
+
+
+
+# =========
+# = Admin =
+# =========
+@login_required
+@staff_required
+def import_book(request):
+ """docstring for import_book"""
+ book_import_form = forms.BookImportForm(request.POST, request.FILES)
+ if book_import_form.is_valid():
+ try:
+ book_import_form.save()
+ except:
+ info = sys.exc_info()
+ exception = pprint.pformat(info[1])
+ tb = '\n'.join(traceback.format_tb(info[2]))
+ return HttpResponse("An error occurred: %s\n\n%s" % (exception, tb), mimetype='text/plain')
+ return HttpResponse("Book imported successfully")
+ else:
+ return HttpResponse("Error importing file: %r" % book_import_form.errors)
\ No newline at end of file
fnp / wolnelektury.git / blobdiff