# -*- coding: utf-8 -*-
+# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+import tempfile
+import zipfile
+import sys
+import pprint
+import traceback
+
+from django.conf import settings
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 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
-@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)
new_set_form = forms.NewSetForm()
- extra_where = 'NOT catalogue_tag.category = "set"'
+ extra_where = "NOT catalogue_tag.category = 'set'"
tags = models.Tag.objects.usage_for_model(models.Book, counts=True, extra={'where': [extra_where]})
fragment_tags = models.Tag.objects.usage_for_model(models.Fragment, counts=True,
- extra={'where': ['catalogue_tag.category = "theme"'] + [extra_where]})
+ extra={'where': ["catalogue_tag.category = 'theme'"] + [extra_where]})
categories = split_tags(tags)
form = forms.SearchForm()
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:
except models.Tag.DoesNotExist:
raise Http404
+ if len([tag for tag in tags if tag.category == 'book']):
+ raise Http404
+
model = models.Book
+ 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
+ only_author = len(tags) == 1 and tags[0].category == 'author'
+ pd_counter = only_author and tags[0].goes_to_pd()
- 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:
+ if not (theme_is_set or shelf_is_set):
model=models.Book.objects.filter(parent=None)
return newtagging_views.tagged_object_list(
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,
+ 'only_author': only_author,
+ 'pd_counter': pd_counter,
+ 'user_is_owner': user_is_owner,
+ 'formats_form': forms.DownloadFormatsForm(),
+ },
)
+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)
+ try:
+ book = models.Book.objects.get(slug=slug)
+ except models.Book.DoesNotExist:
+ return book_stub_detail(request, 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 book_stub_detail(request, slug):
+ book = get_object_or_404(models.BookStub, slug=slug)
+ pd_counter = book.pd
+ form = forms.SearchForm()
+
+ return render_to_response('catalogue/book_stub_detail.html', locals(),
+ context_instance=RequestContext(request))
+
+
def book_text(request, slug):
book = get_object_or_404(models.Book, slug=slug)
book_themes = {}
# ==========
# = Search =
# ==========
+def _word_starts_with(name, prefix):
+ """returns a Q object gettings models having `name` contain a word
+ starting with `prefix`
+ """
+ kwargs = {}
+ if settings.DATABASE_ENGINE in ('mysql', 'postgresql_psycopg2', 'postgresql'):
+ # we must escape `prefix` so that it only matches literally
+ for special in r'\^$.*+?|(){}[]':
+ prefix = prefix.replace(special, '\\' + special)
+
+ # we could use a [[:<:]] (word start),
+ # but we want both `xy` and `(xy` to catch `(xyz)`
+ kwargs['%s__iregex' % name] = u"(^|[^[:alpha:]])%s" % prefix
+ else:
+ # don't know how to do a generic regex
+ # checking for simple icontain instead
+ kwargs['%s__icontains' % name] = prefix
+ return Q(**kwargs)
+
+
+def _tags_starting_with(prefix, user):
+ book_stubs = models.BookStub.objects.filter(_word_starts_with('title', prefix))
+ books = models.Book.objects.filter(_word_starts_with('title', prefix))
+ book_stubs = filter(lambda x: x not in books, book_stubs)
+ tags = models.Tag.objects.filter(_word_starts_with('name', prefix))
+ if user.is_authenticated():
+ tags = tags.filter(~Q(category='book') & (~Q(category='set') | Q(user=user)))
+ else:
+ tags = tags.filter(~Q(category='book') & ~Q(category='set'))
+
+ return list(books) + list(tags) + list(book_stubs)
+
+
def search(request):
- query = request.GET.get('q', '')
tags = request.GET.get('tags', '')
- if tags == '':
- tags = []
-
+ prefix = request.GET.get('q', '')
+
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)}
- ))
-
+ except:
+ 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))
+ # Prefix must have at least 2 characters
+ if len(prefix) < 2:
+ return render_to_response('catalogue/search_no_hits.html', {'query':prefix, 'tags':tag_list},
+ context_instance=RequestContext(request))
+
+ result = _tags_starting_with(prefix, request.user)
+ if len(result) > 0:
+ tag = result[0]
+ if isinstance(tag, models.Book) or isinstance(tag, models.BookStub):
+ return HttpResponseRedirect(tag.get_absolute_url())
else:
- tags = tags.filter(~Q(category='set'))
-
- completions = [book.title for book in books] + [tag.name for tag in tags]
+ tag_list.append(tag)
+
+ return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list',
+ kwargs={'tags': '/'.join(tag.slug for tag in tag_list)}
+ ))
+ else:
+ return render_to_response('catalogue/search_no_hits.html', {'query':prefix, 'tags':tag_list},
+ context_instance=RequestContext(request))
- return HttpResponse('\n'.join(completions))
- except KeyError:
+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)))
# ====================
# = Shelf management =
# ====================
@login_required
-@cache.cache_control(must_revalidate=True, max_age=3600, private=True)
+@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.cache_control(must_revalidate=True, max_age=3600, private=True)
+@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))
+@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)
+
+ if shelf in book.tags:
+ models.Tag.objects.remove_tag(book, shelf)
+
+ shelf.book_count -= 1
+ shelf.save()
+
+ return HttpResponse('Usunięto')
+ else:
+ return HttpResponse('Książki nie ma na półce')
+
+
+def collect_books(books):
+ """
+ Returns all real books in collection.
+ """
+ result = []
+ for book in books:
+ if len(book.children.all()) == 0:
+ result.append(book)
+ else:
+ result += collect_books(book.children.all())
+ return result
+
+
+@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')
+
+ formats = []
+ form = forms.DownloadFormatsForm(request.GET)
+ if form.is_valid():
+ formats = form.cleaned_data['formats']
+ if len(formats) == 0:
+ formats = ['pdf', 'odt', 'txt', 'mp3', 'ogg']
+
+ # Create a ZIP archive
+ temp = temp = tempfile.TemporaryFile()
+ archive = zipfile.ZipFile(temp, 'w')
+
+ for book in collect_books(models.Book.tagged.with_all(shelf)):
+ if 'pdf' in formats and book.pdf_file:
+ filename = book.pdf_file.path
+ archive.write(filename, str('%s.pdf' % book.slug))
+ if 'odt' in formats and book.odt_file:
+ filename = book.odt_file.path
+ archive.write(filename, str('%s.odt' % book.slug))
+ if 'txt' in formats and book.txt_file:
+ filename = book.txt_file.path
+ archive.write(filename, str('%s.txt' % book.slug))
+ if 'mp3' in formats and book.mp3_file:
+ filename = book.mp3_file.path
+ archive.write(filename, str('%s.mp3' % book.slug))
+ if 'ogg' in formats and book.ogg_file:
+ filename = book.ogg_file.path
+ archive.write(filename, str('%s.ogg' % 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
+
+
+@cache.never_cache
+def shelf_book_formats(request, shelf):
+ """"
+ Returns a list of formats of books in shelf.
+ """
+ shelf = get_object_or_404(models.Tag, slug=shelf, category='set')
+
+ formats = {'pdf': False, 'odt': False, 'txt': False, 'mp3': False, 'ogg': False}
+
+ for book in collect_books(models.Book.tagged.with_all(shelf)):
+ if book.pdf_file:
+ formats['pdf'] = True
+ if book.odt_file:
+ formats['odt'] = True
+ if book.txt_file:
+ formats['txt'] = True
+ if book.mp3_file:
+ formats['mp3'] = True
+ if book.ogg_file:
+ formats['ogg'] = True
+
+ return HttpResponse(LazyEncoder().encode(formats))
+
+
@login_required
@require_POST
@cache.never_cache
else:
return HttpResponseRedirect('/')
- return render_to_response('catalogue/book_sets.html', locals(),
- context_instance=RequestContext(request))
+ return HttpResponseRedirect('/')
@login_required
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)
+
+
+
+def clock(request):
+ """ Provides server time for jquery.countdown,
+ in a format suitable for Date.parse()
+ """
+ from datetime import datetime
+ return HttpResponse(datetime.now().strftime('%Y/%m/%d %H:%M:%S'))
fnp / wolnelektury.git / blobdiff