# -*- 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
+import re
+
+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 django.utils import simplejson
from django.utils.functional import Promise
from django.utils.encoding import force_unicode
+from django.utils.http import urlquote_plus
+from django.views.decorators import cache
+from django.utils.translation import ugettext as _
+from django.views.generic.list_detail import object_list
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)
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()
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
- 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)
+ if len([tag for tag in tags if tag.category == 'book']):
+ raise Http404
+
+ theme_is_set = [tag for tag in tags if tag.category == 'theme']
+ shelf_is_set = len(tags) == 1 and tags[0].category == 'set'
+ my_shelf_is_set = shelf_is_set and request.user.is_authenticated() and request.user == tags[0].user
+
+ objects = only_author = pd_counter = categories = None
+
if theme_is_set:
- model = models.Fragment
-
- extra_where = 'NOT catalogue_tag.category = "set"'
- related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
- categories = split_tags(related_tags)
-
- return newtagging_views.tagged_object_list(
+ shelf_tags = [tag for tag in tags if tag.category == 'set']
+ fragment_tags = [tag for tag in tags if tag.category != 'set']
+ fragments = models.Fragment.tagged.with_all(fragment_tags)
+
+ if shelf_tags:
+ books = models.Book.tagged.with_all(shelf_tags).order_by()
+ l_tags = [models.Tag.objects.get(slug = 'l-' + book.slug) for book in books]
+ fragments = models.Fragment.tagged.with_any(l_tags, fragments)
+
+ related_tags = models.Tag.objects.usage_for_queryset(fragments, counts=True,
+ extra={'where': ["catalogue_tag.category != 'book'"]})
+ related_tags = (tag for tag in related_tags if tag not in fragment_tags)
+ categories = split_tags(related_tags)
+
+ objects = fragments
+ else:
+ books = models.Book.tagged.with_all(tags).order_by()
+ l_tags = [models.Tag.objects.get(slug = 'l-' + book.slug) for book in books]
+ book_keys = [book.pk for book in books]
+ related_tags = models.Tag.objects.usage_for_queryset(books, counts=True,
+ extra={'where': ["catalogue_tag.category NOT IN ('set', 'book', 'theme')"]})
+ related_tags = (tag for tag in related_tags if tag not in tags)
+ categories = split_tags(related_tags)
+
+ fragments = models.Fragment.tagged.with_any(l_tags)
+ categories['theme'] = models.Tag.objects.usage_for_queryset(fragments, counts=True,
+ extra={'where': ["catalogue_tag.category = 'theme'"]})
+
+ books = books.exclude(parent__in = book_keys)
+ objects = books
+
+ if not objects:
+ only_author = len(tags) == 1 and tags[0].category == 'author'
+ pd_counter = only_author and tags[0].goes_to_pd()
+ objects = models.Book.objects.none()
+
+ return object_list(
request,
- tag_model=models.Tag,
- queryset_or_model=model,
- tags=tags,
+ objects,
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': my_shelf_is_set,
+ 'formats_form': forms.DownloadFormatsForm(),
+
+ 'tags': tags,
+ }
)
+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 logout_then_redirect(request):
- auth.logout(request)
- return HttpResponseRedirect(request.GET.get('next', '/'))
+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 = {}
+ 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']
+
+# ==========
+# = Search =
+# ==========
+
+def _no_diacritics_regexp(query):
+ """ returns a regexp for searching for a query without diacritics
+
+ should be locale-aware """
+ names = {'a':u'ą', 'c':u'ć', 'e':u'ę', 'l': u'ł', 'n':u'ń', 'o':u'ó', 's':u'ś', 'z':u'ź|ż'}
+ def repl(m):
+ l = m.group()
+ return "(%s|%s)" % (l, names[l])
+ return re.sub('[%s]'%(''.join(names.keys())), repl, query)
+
+def _word_starts_with(name, prefix):
+ """returns a Q object getting models having `name` contain a word
+ starting with `prefix`
+ """
+ kwargs = {}
+ if settings.DATABASE_ENGINE in ('mysql', 'postgresql_psycopg2', 'postgresql'):
+ prefix = _no_diacritics_regexp(re.escape(prefix))
+ # 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_exact_matches(prefix, user):
+ book_stubs = models.BookStub.objects.filter(title__iexact = prefix)
+ books = models.Book.objects.filter(title__iexact = prefix)
+ book_stubs = filter(lambda x: x not in books, book_stubs)
+ tags = models.Tag.objects.filter(name__iexact = 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 _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 _get_result_link(match, tag_list):
+ if isinstance(match, models.Book) or isinstance(match, models.BookStub):
+ return match.get_absolute_url()
+ else:
+ return reverse('catalogue.views.tagged_object_list',
+ kwargs={'tags': '/'.join(tag.slug for tag in tag_list + [match])}
)
- auth.login(request, user)
- response_data = {'success': True, 'errors': {}}
+
+def _get_result_type(match):
+ if isinstance(match, models.Book) or isinstance(match, models.BookStub):
+ type = 'book'
else:
- response_data = {'success': False, 'errors': registration_form.errors}
- return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
+ type = match.category
+ return dict(models.TAG_CATEGORIES)[type]
+
-@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': {}}
+def search(request):
+ tags = request.GET.get('tags', '')
+ prefix = request.GET.get('q', '')
+
+ try:
+ tag_list = models.Tag.get_tag_list(tags)
+ except:
+ tag_list = []
+
+ # Prefix must have at least 2 characters
+ if len(prefix) < 2:
+ return render_to_response('catalogue/search_too_short.html', {'tags':tag_list, 'prefix':prefix},
+ context_instance=RequestContext(request))
+
+ result = _tags_exact_matches(prefix, request.user)
+
+ if len(result) > 1:
+ # multiple exact matches
+ return render_to_response('catalogue/search_multiple_hits.html',
+ {'tags':tag_list, 'prefix':prefix, 'results':((x, _get_result_link(x, tag_list), _get_result_type(x)) for x in result)},
+ context_instance=RequestContext(request))
+
+ if not result:
+ # no exact matches
+ result = _tags_starting_with(prefix, request.user)
+
+ if result:
+ return HttpResponseRedirect(_get_result_link(result[0], tag_list))
else:
- response_data = {'success': False, 'errors': form.errors}
- return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
+ return render_to_response('catalogue/search_no_hits.html', {'tags':tag_list, 'prefix':prefix},
+ context_instance=RequestContext(request))
+
+
+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.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)
book_sets = book.tags.filter(category='set', user=request.user)
if not request.user.is_authenticated():
- return HttpResponse('<p>Aby zarządzać swoimi półkami, musisz się zalogować.</p>')
+ return HttpResponse(_('<p>To maintain your shelves you need to be logged in.</p>'))
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>')
+ return HttpResponse(_('<p>Shelves were sucessfully saved.</p>'))
else:
return HttpResponseRedirect('/')
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)
+
+ if shelf in book.tags:
+ models.Tag.objects.remove_tag(book, shelf)
- if not request.user.is_authenticated():
- return HttpResponse('<p>Aby zarządzać swoimi półkami, musisz się zalogować.</p>')
+ shelf.book_count -= 1
+ shelf.save()
- 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('/')
+ return HttpResponse(_('Book was successfully removed from the shelf'))
else:
- form = forms.ObjectSetsForm(fragment, request.user)
- new_set_form = forms.NewSetForm()
+ return HttpResponse(_('This book is not on the shelf'))
- return render_to_response('catalogue/fragment_sets.html', locals(),
- context_instance=RequestContext(request))
+
+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 = 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
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)
+ return HttpResponse(_('<p>Shelf <strong>%s</strong> was successfully created</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)
+ return HttpResponse(_('<p>Shelf <strong>%s</strong> was successfully removed</p>') % user_set.name)
else:
return HttpResponseRedirect('/')
+# ==================
+# = 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(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
+
+
+
+# =========
+# = Admin =
+# =========
@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))
+@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]))
+ _('Today is %(month)s, %(day)s.') % {'month': m, 'day': d}
+ return HttpResponse(_("An error occurred: %(exception)s\n\n%(tb)s") % {'exception':exception, 'tb':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