import sys
import pprint
import traceback
+import re
from django.conf import settings
from django.template import RequestContext
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
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)
+ 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
- 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)
+ objects = only_author = pd_counter = categories = None
+
+ if theme_is_set:
+ 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 newtagging_views.tagged_object_list(
+ 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,
'only_author': only_author,
'pd_counter': pd_counter,
- 'user_is_owner': user_is_owner,
+ 'user_is_owner': my_shelf_is_set,
'formats_form': forms.DownloadFormatsForm(),
- },
+
+ 'tags': tags,
+ }
)
# ==========
# = Search =
# ==========
+
+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',
+ u'ą':u'ąĄ', u'ć':u'ćĆ', u'ę':u'ęĘ', u'ł': u'łŁ', u'ń':u'ńŃ', u'ó':u'óÓ', u'ś':u'śŚ', u'ź':u'źŹ', u'ż':u'żŻ'
+ }
+ def repl(m):
+ l = m.group()
+ return u"(%s)" % '|'.join(names[l])
+ return re.sub(u'[%s]'%(u''.join(names.keys())), repl, query)
+
+def unicode_re_escape(query):
+ """ Unicode-friendly version of re.escape """
+ return re.sub('(?u)(\W)', r'\\\1', query)
+
def _word_starts_with(name, prefix):
- """returns a Q object gettings models having `name` contain a word
+ """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 = {}
- 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
+
+ prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
+ # can't use [[:<:]] (word start),
+ # but we want both `xy` and `(xy` to catch `(xyz)`
+ kwargs['%s__iregex' % name] = u"(^|[^[:alnum:]_])%s" % prefix
+ print kwargs['%s__iregex' % name]
+
+ return Q(**kwargs)
+
+
+def _sqlite_word_starts_with(name, prefix):
+ """ version of _word_starts_with for SQLite
+
+ SQLite in Django uses Python re module
+ """
+ kwargs = {}
+ prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
+ kwargs['%s__iregex' % name] = ur"(^|(?<=[^\wąćęłńóśźżĄĆĘŁŃÓŚŹŻ]))%s" % prefix
return Q(**kwargs)
+if settings.DATABASE_ENGINE == 'sqlite3':
+ _word_starts_with = _sqlite_word_starts_with
+
+
def _tags_starting_with(prefix, user):
+ prefix = prefix.lower()
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)
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])}
+ )
+
+def _get_result_type(match):
+ if isinstance(match, models.Book) or isinstance(match, models.BookStub):
+ type = 'book'
+ else:
+ type = match.category
+ return dict(models.TAG_CATEGORIES)[type]
+
+
+
+def find_best_matches(query, user):
+ """ 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.
+ """
+
+ query = query.lower()
+ if len(query) < 2:
+ raise ValueError("query must have at least two characters")
+
+ result = tuple(_tags_starting_with(query, user))
+ exact_matches = tuple(res for res in result if res.name.lower() == query)
+ if exact_matches:
+ return exact_matches
+ else:
+ return result[:1]
+
+
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) 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)}
- ))
+ try:
+ result = find_best_matches(prefix, request.user)
+ except ValueError:
+ return render_to_response('catalogue/search_too_short.html', {'tags':tag_list, 'prefix':prefix},
+ context_instance=RequestContext(request))
+
+ if len(result) == 1:
+ return HttpResponseRedirect(_get_result_link(result[0], tag_list))
+ elif len(result) > 1:
+ 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))
else:
- return render_to_response('catalogue/search_no_hits.html', {'query':prefix, 'tags':tag_list},
+ return render_to_response('catalogue/search_no_hits.html', {'tags':tag_list, 'prefix':prefix},
context_instance=RequestContext(request))
@cache.never_cache
def logout_then_redirect(request):
auth.logout(request)
- return HttpResponseRedirect(request.GET.get('next', '/'))
+ return HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
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')
+ _('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)
in a format suitable for Date.parse()
"""
from datetime import datetime
- return HttpResponse(datetime.now().strftime('%Y/%m/%d %H:%M:%S'))
\ No newline at end of file
+ return HttpResponse(datetime.now().strftime('%Y/%m/%d %H:%M:%S'))
fnp / wolnelektury.git / blobdiff