+++ /dev/null
-# -*- 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, user_passes_test
-from django.utils.datastructures import SortedDict
-from django.views.decorators.http import require_POST
-from django.contrib import auth
-from django.contrib.auth.forms import UserCreationForm, AuthenticationForm
-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 catalogue.utils import split_tags
-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 force_unicode(obj)
- return obj
-
-
-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'"
- 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]})
- categories = split_tags(tags)
-
- form = forms.SearchForm()
- return render_to_response('catalogue/main_page.html', locals(),
- context_instance=RequestContext(request))
-
-
-def book_list(request):
- books = models.Book.objects.all()
- form = forms.SearchForm()
-
- books_by_first_letter = SortedDict()
- for book in books:
- books_by_first_letter.setdefault(book.title[0], []).append(book)
-
- return render_to_response('catalogue/book_list.html', locals(),
- context_instance=RequestContext(request))
-
-
-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 = [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()
-
- 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,
- '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):
- 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 = {}
- 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))
-
-
-# ==========
-# = 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):
- 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_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:
- 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))
-
-
-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>')
-
- if request.method == 'POST':
- form = forms.ObjectSetsForm(book, request.user, request.POST)
- if form.is_valid():
- 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:
- return HttpResponseRedirect('/')
- else:
- form = forms.ObjectSetsForm(book, request.user)
- new_set_form = forms.NewSetForm()
-
- return render_to_response('catalogue/book_sets.html', locals(),
- 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
-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 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('/')
-
-
-# ==================
-# = 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)
-
-
-
-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