X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/8ae7c36dcdaa17301f8085b69b003d513ffcfa1f..802753926b75af4c173d2765e5f3777a559f7ebb:/apps/catalogue/views.py diff --git a/apps/catalogue/views.py b/apps/catalogue/views.py index 0026c173b..60f984a9d 100644 --- a/apps/catalogue/views.py +++ b/apps/catalogue/views.py @@ -1,13 +1,20 @@ # -*- 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 @@ -16,7 +23,6 @@ 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 @@ -24,6 +30,9 @@ 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): @@ -31,15 +40,14 @@ class LazyEncoder(simplejson.JSONEncoder): 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() @@ -59,7 +67,6 @@ def book_list(request): 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: @@ -70,17 +77,25 @@ def tagged_object_list(request, 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() - 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( @@ -89,21 +104,56 @@ def tagged_object_list(request, tags=''): 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 = {} @@ -120,47 +170,74 @@ def book_text(request, slug): # ========== # = 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', '') + # Prefix must have at least 2 characters + if len(prefix) < 2: + return HttpResponse('') + 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')) + except: + tag_list = [] + + 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: - tag_list.append(tag) - return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list', - kwargs={'tags': '/'.join(tag.slug for tag in tag_list)} - )) + return render_to_response('catalogue/search_no_hits.html', {'query':prefix, 'tags':tag_list}, + context_instance=RequestContext(request)) 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: + 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))) # ==================== @@ -174,7 +251,6 @@ def user_shelves(request): 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) @@ -187,8 +263,18 @@ def book_sets(request, slug): 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('

Półki zostały zapisane.

') else: @@ -201,7 +287,38 @@ def book_sets(request, slug): context_instance=RequestContext(request)) -@cache.cache_control(must_revalidate=True, max_age=1800) +@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, @@ -210,30 +327,68 @@ def download_shelf(request, slug): """ 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', zipfile.ZIP_DEFLATED) - for book in models.Book.tagged.with_all(shelf): - if book.pdf_file: + 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 book.odt_file: + if 'odt' in formats and book.odt_file: filename = book.odt_file.path archive.write(filename, str('%s.odt' % book.slug)) - if book.txt_file: + 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() - # Write file to archive in small chunks - wrapper = FileWrapper(temp) - response = HttpResponse(wrapper, content_type='application/zip') + 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 @@ -247,8 +402,7 @@ def new_set(request): else: return HttpResponseRedirect('/') - return render_to_response('catalogue/book_sets.html', locals(), - context_instance=RequestContext(request)) + return HttpResponseRedirect('/') @login_required @@ -301,3 +455,33 @@ 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'))