X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/6aa28c35d2d68f512ba2ae2fdde2c5e5b5d8e808..e1ca1ec8d77b79835f83bb8910cdd629e1cd3534:/apps/catalogue/views.py diff --git a/apps/catalogue/views.py b/apps/catalogue/views.py index bf52dc43c..f574c13fa 100644 --- a/apps/catalogue/views.py +++ b/apps/catalogue/views.py @@ -1,4 +1,7 @@ # -*- coding: utf-8 -*- +import tempfile +import zipfile + from django.template import RequestContext from django.shortcuts import render_to_response, get_object_or_404 from django.http import HttpResponse, HttpResponseRedirect, Http404 @@ -12,6 +15,7 @@ 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 @@ -26,49 +30,7 @@ class LazyEncoder(simplejson.JSONEncoder): 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('') - - +@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) @@ -96,6 +58,7 @@ 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: @@ -108,7 +71,7 @@ def tagged_object_list(request, tags=''): 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) + theme_is_set = len([tag for tag in tags if tag.category == 'theme']) > 0 if theme_is_set: model = models.Fragment @@ -116,7 +79,7 @@ def tagged_object_list(request, tags=''): 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( @@ -142,43 +105,78 @@ def book_detail(request, slug): 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)) -def logout_then_redirect(request): - auth.logout(request) - return HttpResponseRedirect(request.GET.get('next', '/')) +# ========== +# = 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='set') | Q(user=user)) + else: + tags = tags.filter(~Q(category='set')) + return list(books) + list(tags) + -@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': {}} - else: - response_data = {'success': False, 'errors': registration_form.errors} - return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data)) +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)} + )) -@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)) +def tags_starting_with(request): + prefix = request.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) @@ -204,63 +202,103 @@ def book_sets(request, slug): 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) - - if not request.user.is_authenticated(): - return HttpResponse('

Aby zarządzać swoimi półkami, musisz się zalogować.

') - - 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('

Półki zostały zapisane.

') - 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)) +@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') + for book in 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'

Półka %s została utworzona

' % new_set) else: return HttpResponseRedirect('/') - + return render_to_response('catalogue/book_sets.html', locals(), context_instance=RequestContext(request)) @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'

Półka %s została usunięta

' % 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', '/'))