import pprint
import traceback
import re
+import itertools
+from operator import itemgetter
from django.conf import settings
from django.template import RequestContext
return force_unicode(obj)
return obj
+# shortcut for JSON reponses
+class JSONResponse(HttpResponse):
+ def __init__(self, data={}, callback=None, **kwargs):
+ # get rid of mimetype
+ kwargs.pop('mimetype', None)
+ data = simplejson.dumps(data)
+ if callback:
+ data = callback + "(" + data + ");"
+ super(JSONResponse, self).__init__(data, mimetype="application/json", **kwargs)
+
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]})
+
+ tags = models.Tag.objects.exclude(category__in=('set', 'book'))
+ for tag in tags:
+ tag.count = tag.get_count()
categories = split_tags(tags)
+ fragment_tags = categories.get('theme', [])
form = forms.SearchForm()
return render_to_response('catalogue/main_page.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
+def differentiate_tags(request, tags, ambiguous_slugs):
+ beginning = '/'.join(tag.url_chunk for tag in tags)
+ unparsed = '/'.join(ambiguous_slugs[1:])
+ options = []
+ for tag in models.Tag.objects.exclude(category='book').filter(slug=ambiguous_slugs[0]):
+ options.append({
+ 'url_args': '/'.join((beginning, tag.url_chunk, unparsed)).strip('/'),
+ 'tags': [tag]
+ })
+ return render_to_response('catalogue/differentiate_tags.html',
+ {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]},
+ context_instance=RequestContext(request))
+
+def tagged_object_list(request, tags=''):
try:
tags = models.Tag.get_tag_list(tags)
except models.Tag.DoesNotExist:
raise Http404
+ except models.Tag.MultipleObjectsReturned, e:
+ return differentiate_tags(request, e.tags, e.ambiguous_slugs)
+
+ try:
+ if len(tags) > settings.MAX_TAG_LIST:
+ raise Http404
+ except AttributeError:
+ pass
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
+ shelf_is_set = [tag for tag in tags if tag.category == 'set']
+ only_shelf = shelf_is_set and len(tags) == 1
+ only_my_shelf = only_shelf and request.user.is_authenticated() and request.user == tags[0].user
- objects = only_author = pd_counter = categories = None
+ objects = only_author = pd_counter = None
+ categories = {}
if theme_is_set:
shelf_tags = [tag for tag in tags if tag.category == 'set']
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]
+ l_tags = models.Tag.objects.filter(category='book', slug__in=[book.book_tag_slug() for book in books])
fragments = models.Fragment.tagged.with_any(l_tags, fragments)
# newtagging goes crazy if we just try:
- #related_tags = models.Tag.objects.usage_for_queryset(fragments, counts=True,
+ #related_tags = models.Tag.objects.usage_for_queryset(fragments, counts=True,
# extra={'where': ["catalogue_tag.category != 'book'"]})
fragment_keys = [fragment.pk for fragment in fragments]
if fragment_keys:
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]
- # newtagging goes crazy if we just try:
- #related_tags = models.Tag.objects.usage_for_queryset(books, counts=True,
- # extra={'where': ["catalogue_tag.category NOT IN ('set', 'book', 'theme')"]})
- if book_keys:
- related_tags = models.Book.tags.usage(counts=True,
- filters={'pk__in': book_keys},
- extra={'where': ["catalogue_tag.category NOT IN ('set', 'book', 'theme')"]})
- categories = split_tags(related_tags)
-
- fragment_keys = [fragment.pk for fragment in models.Fragment.tagged.with_any(l_tags)]
- if fragment_keys:
- categories['theme'] = models.Fragment.tags.usage(counts=True,
- filters={'pk__in': fragment_keys},
- extra={'where': ["catalogue_tag.category = 'theme'"]})
-
- books = books.exclude(parent__in=book_keys)
- objects = books
+ # get relevant books and their tags
+ objects = models.Book.tagged.with_all(tags).order_by()
+ if not shelf_is_set:
+ # eliminate descendants
+ l_tags = models.Tag.objects.filter(category='book', slug__in=[book.book_tag_slug() for book in objects])
+ descendants_keys = [book.pk for book in models.Book.tagged.with_any(l_tags)]
+ if descendants_keys:
+ objects = objects.exclude(pk__in=descendants_keys)
+
+ # get related tags from `tag_counter` and `theme_counter`
+ related_counts = {}
+ tags_pks = [tag.pk for tag in tags]
+ for book in objects:
+ for tag_pk, value in itertools.chain(book.tag_counter.iteritems(), book.theme_counter.iteritems()):
+ if tag_pk in tags_pks:
+ continue
+ related_counts[tag_pk] = related_counts.get(tag_pk, 0) + value
+ related_tags = models.Tag.objects.filter(pk__in=related_counts.keys())
+ related_tags = [tag for tag in related_tags if tag not in tags]
+ for tag in related_tags:
+ tag.count = related_counts[tag.pk]
+
+ categories = split_tags(related_tags)
+ del related_tags
if not objects:
only_author = len(tags) == 1 and tags[0].category == 'author'
template_name='catalogue/tagged_object_list.html',
extra_context={
'categories': categories,
- 'shelf_is_set': shelf_is_set,
+ 'only_shelf': only_shelf,
'only_author': only_author,
'pd_counter': pd_counter,
- 'user_is_owner': my_shelf_is_set,
+ 'only_my_shelf': only_my_shelf,
'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)
+ book_tag = get_object_or_404(models.Tag, slug='l-' + book_slug, category='book')
+ theme = get_object_or_404(models.Tag, slug=theme_slug, category='theme')
fragments = models.Fragment.tagged.with_all([book_tag, theme])
form = forms.SearchForm()
except models.Book.DoesNotExist:
return book_stub_detail(request, slug)
- book_tag = get_object_or_404(models.Tag, slug='l-' + slug)
+ book_tag = book.book_tag()
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]})
+
+ theme_counter = book.theme_counter
+ book_themes = models.Tag.objects.filter(pk__in=theme_counter.keys())
+ for tag in book_themes:
+ tag.count = theme_counter[tag.pk]
+
extra_info = book.get_extra_info_value()
form = forms.SearchForm()
def _no_diacritics_regexp(query):
""" returns a regexp for searching for a query without diacritics
-
+
should be locale-aware """
names = {
u'a':u'aąĄ', u'c':u'cćĆ', u'e':u'eęĘ', u'l': u'lłŁ', u'n':u'nńŃ', u'o':u'oóÓ', u's':u'sśŚ', u'z':u'zźżŹŻ',
def _word_starts_with(name, prefix):
"""returns a Q object getting models having `name` contain a word
starting with `prefix`
-
+
We define word characters as alphanumeric and underscore, like in JS.
-
+
Works for MySQL, PostgreSQL, Oracle.
For SQLite, _sqlite* version is substituted for this.
"""
kwargs = {}
prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
- # can't use [[:<:]] (word start),
+ # can't use [[:<:]] (word start),
# but we want both `xy` and `(xy` to catch `(xyz)`
kwargs['%s__iregex' % name] = u"(^|[^[:alnum:]_])%s" % prefix
def _sqlite_word_starts_with(name, prefix):
- """ version of _word_starts_with for SQLite
-
+ """ version of _word_starts_with for SQLite
+
SQLite in Django uses Python re module
"""
kwargs = {}
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)
return match.get_absolute_url()
else:
return reverse('catalogue.views.tagged_object_list',
- kwargs={'tags': '/'.join(tag.slug for tag in tag_list + [match])}
+ kwargs={'tags': '/'.join(tag.url_chunk for tag in tag_list + [match])}
)
def _get_result_type(match):
type = 'book'
else:
type = match.category
- return dict(models.TAG_CATEGORIES)[type]
+ return type
def find_best_matches(query, user=None):
""" Finds a Book, Tag or Bookstub best matching a query.
-
+
Returns a with:
- zero elements when nothing is found,
- one element when a best result is found,
- more then one element on multiple exact matches
-
+
Raises a ValueError on too short a query.
"""
# 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)))
+ tags_list = []
+ result = ""
+ for tag in _tags_starting_with(prefix, request.user):
+ if not tag.name in tags_list:
+ result += "\n" + tag.name
+ tags_list.append(tag.name)
+ return HttpResponse(result)
+
+def json_tags_starting_with(request, callback=None):
+ # Callback for JSONP
+ prefix = request.GET.get('q', '')
+ callback = request.GET.get('callback', '')
+ # Prefix must have at least 2 characters
+ if len(prefix) < 2:
+ return HttpResponse('')
+ tags_list = []
+ result = ""
+ for tag in _tags_starting_with(prefix, request.user):
+ if not tag.name in tags_list:
+ result += "\n" + tag.name
+ tags_list.append(tag.name)
+ dict_result = {"matches": tags_list}
+ return JSONResponse(dict_result, callback)
# ====================
# = Shelf management =
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.book_count = None
shelf.save()
for shelf in [shelf for shelf in new_shelves if shelf not in old_shelves]:
- shelf.book_count += 1
+ shelf.book_count = None
shelf.save()
book.tags = new_shelves + list(book.tags.filter(~Q(category='set') | ~Q(user=request.user)))
if shelf in book.tags:
models.Tag.objects.remove_tag(book, shelf)
- shelf.book_count -= 1
+ shelf.book_count = None
shelf.save()
return HttpResponse(_('Book was successfully removed from the shelf'))
""""
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.
+ be used for large dynamic PDF files.
"""
shelf = get_object_or_404(models.Tag, slug=slug, category='set')
if form.is_valid():
formats = form.cleaned_data['formats']
if len(formats) == 0:
- formats = ['pdf', 'odt', 'txt', 'mp3', 'ogg']
+ formats = ['pdf', 'epub', 'odt', 'txt', 'mp3', 'ogg']
# Create a ZIP archive
temp = tempfile.TemporaryFile()
if 'pdf' in formats and book.pdf_file:
filename = book.pdf_file.path
archive.write(filename, str('%s.pdf' % book.slug))
+ if 'epub' in formats and book.epub_file:
+ filename = book.epub_file.path
+ archive.write(filename, str('%s.epub' % book.slug))
if 'odt' in formats and book.odt_file:
filename = book.odt_file.path
archive.write(filename, str('%s.odt' % book.slug))
"""
shelf = get_object_or_404(models.Tag, slug=shelf, category='set')
- formats = {'pdf': False, 'odt': False, 'txt': False, 'mp3': False, 'ogg': False}
+ formats = {'pdf': False, 'epub': 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.epub_file:
+ formats['epub'] = True
if book.odt_file:
formats['odt'] = True
if book.txt_file:
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:
fnp / wolnelektury.git / blobdiff