More readable tests.

diff --git a/apps/catalogue/tests.py b/apps/catalogue/tests.py
index fae4ba2..ddd6fb7 100644 (file)
--- a/apps/catalogue/tests.py
+++ b/apps/catalogue/tests.py
@@ -3,51 +3,69 @@ from django.test import TestCase
 from catalogue import models, views
 from django.contrib.auth.models import User, AnonymousUser
 
 from catalogue import models, views
 from django.contrib.auth.models import User, AnonymousUser
 

-class SimpleSearchTest(TestCase):
+from nose.tools import raises
+
+class BasicSearchTests(TestCase):

     def setUp(self):
     def setUp(self):

-        t = models.Tag(name=u'Tadeusz Żeleński (Boy)', category=u'author', slug=u'a1')
-        t.save()
-        self.t = t
-        self.user = AnonymousUser()
-    
-    def tearDown(self):
-        self.t.delete()
-    
-    def test_too_short(self):
-        self.assertRaises(ValueError, views.find_best_matches, u'', self.user)
-        self.assertRaises(ValueError, views.find_best_matches, u't', self.user)
-        
-    def test_match_beginning(self):
-        self.assertEqual(views.find_best_matches(u'Tad', self.user), (self.t,))
-    
-    def test_match_case(self):
-        self.assertEqual(views.find_best_matches(u'TAD', self.user), (self.t,))
+        self.author_tag = models.Tag.objects.create(
+                                name=u'Adam Mickiewicz [SubWord]',
+                                category=u'author', slug="one")
+
+        self.unicode_tag = models.Tag.objects.create(
+                                name=u'Tadeusz Żeleński (Boy)',
+                                category=u'author', slug="two")
+
+        self.polish_tag = models.Tag.objects.create(
+                                name=u'ĘÓĄŚŁŻŹĆŃęóąśłżźćń',
+                                category=u'author', slug="three")
+
+    @raises(ValueError)
+    def test_empty_query(self):
+        """ Check that empty queries raise an error. """
+        views.find_best_matches(u'')
+
+    @raises(ValueError)
+    def test_one_letter_query(self):
+        """ Check that one letter queries aren't permitted. """
+        views.find_best_matches(u't')
+
+    def test_match_by_prefix(self):
+        """ Tags should be matched by prefix of words within it's name. """
+        self.assertEqual(views.find_best_matches(u'Ada'), (self.author_tag,))
+        self.assertEqual(views.find_best_matches(u'Mic'), (self.author_tag,))
+        self.assertEqual(views.find_best_matches(u'Mickiewicz'), (self.author_tag,))
+
+    def test_match_case_insensitive(self):
+        """ Tag names should match case insensitive. """
+        self.assertEqual(views.find_best_matches(u'adam mickiewicz'), (self.author_tag,))
+
+    def test_match_case_insensitive_unicode(self):
+        """ Tag names should match case insensitive (unicode). """
+        self.assertEqual(views.find_best_matches(u'tadeusz żeleński (boy)'), (self.unicode_tag,))

 
     def test_word_boundary(self):
 
     def test_word_boundary(self):

-        self.assertEqual(views.find_best_matches(u'Boy', self.user), (self.t,))
-        self.assertEqual(views.find_best_matches(u'(Boy', self.user), (self.t,))
-
-    def test_not_found(self):
-        self.assertEqual(views.find_best_matches(u'andrzej', self.user), ())
-        self.assertEqual(views.find_best_matches(u'deusz', self.user), ())
-    
-    def test_locale(self):
-        self.assertEqual(views.find_best_matches(u'ele', self.user), ())
-        self.assertEqual(views.find_best_matches(u'Żele', self.user), (self.t,))
-        self.assertEqual(views.find_best_matches(u'żele', self.user), (self.t,))
-    
-    def test_sloppy(self):
-        self.assertEqual(views.find_best_matches(u'Żelenski', self.user), (self.t,))
-        self.assertEqual(views.find_best_matches(u'zelenski', self.user), (self.t,))
-        
+        self.assertEqual(views.find_best_matches(u'SubWord'), (self.author_tag,))
+        self.assertEqual(views.find_best_matches(u'[SubWord'), (self.author_tag,))

 
 

+    def test_unrelated_search(self):
+        self.assertEqual(views.find_best_matches(u'alamakota'), tuple())
+        self.assertEqual(views.find_best_matches(u'Adama'), ())
+
+    def test_infix_doesnt_match(self):
+        """ Searching for middle of a word shouldn't match. """
+        self.assertEqual(views.find_best_matches(u'deusz'), tuple())
+
+    def test_diactricts_removal_pl(self):
+        """ Tags should match both with and without national characters. """
+        self.assertEqual(views.find_best_matches(u'ĘÓĄŚŁŻŹĆŃęóąśłżźćń'), (self.polish_tag,))
+        self.assertEqual(views.find_best_matches(u'EOASLZZCNeoaslzzcn'), (self.polish_tag,))
+        self.assertEqual(views.find_best_matches(u'eoaslzzcneoaslzzcn'), (self.polish_tag,))
+
+    def test_diactricts_query_removal_pl(self):
+        """ Tags without national characters shouldn't be matched by queries with them. """
+        self.assertEqual(views.find_best_matches(u'Adąm'), ())
+
+    def test_sloppy(self):
+        self.assertEqual(views.find_best_matches(u'Żelenski'), (self.unicode_tag,))
+        self.assertEqual(views.find_best_matches(u'zelenski'), (self.unicode_tag,))

 
 

-class SetSearchTest(TestCase):
-    def setUp(self):
-        self.me = User(name='me')
-        self.other = User(name='other')
-    
-    def tearDown(self):
-        self.me.delete()
-        self.other.delete()
-    

diff --git a/apps/catalogue/views.py b/apps/catalogue/views.py
index b3541a8..e79e5d4 100644 (file)
--- a/apps/catalogue/views.py
+++ b/apps/catalogue/views.py
@@ -44,7 +44,7 @@ class LazyEncoder(simplejson.JSONEncoder):
         return obj
 
 
         return obj
 
 

-def main_page(request):    
+def main_page(request):

     if request.user.is_authenticated():
         shelves = models.Tag.objects.filter(category='set', user=request.user)
         new_set_form = forms.NewSetForm()
     if request.user.is_authenticated():
         shelves = models.Tag.objects.filter(category='set', user=request.user)
         new_set_form = forms.NewSetForm()


@@ -53,7 +53,7 @@ def main_page(request):
     fragment_tags = models.Tag.objects.usage_for_model(models.Fragment, counts=True,
         extra={'where': ["catalogue_tag.category = 'theme'"] + [extra_where]})
     categories = split_tags(tags)
     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))
     form = forms.SearchForm()
     return render_to_response('catalogue/main_page.html', locals(),
         context_instance=RequestContext(request))


@@ -62,11 +62,11 @@ def main_page(request):
 def book_list(request):
     books = models.Book.objects.all()
     form = forms.SearchForm()
 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)
     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))
 
     return render_to_response('catalogue/book_list.html', locals(),
         context_instance=RequestContext(request))
 


@@ -75,75 +75,75 @@ def tagged_object_list(request, tags=''):
     # Prevent DoS attacks on our database
     if len(tags.split('/')) > 6:
         raise Http404
     # 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
     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
     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
     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

-    
+

     objects = only_author = pd_counter = categories = 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 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()
         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.get(slug='l-' + book.slug) for book in books]

             fragments = models.Fragment.tagged.with_any(l_tags, fragments)
             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, 
         #                    extra={'where': ["catalogue_tag.category != 'book'"]})
         fragment_keys = [fragment.pk for fragment in fragments]
         if fragment_keys:
         # newtagging goes crazy if we just try:
         #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:

-            related_tags = models.Fragment.tags.usage(counts = True,
-                                filters = {'pk__in': fragment_keys}, 
+            related_tags = models.Fragment.tags.usage(counts=True,
+                                filters={'pk__in': fragment_keys},

                                 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)
                                 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()
             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]
+        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,
         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}, 
+                                filters={'pk__in': book_keys},

                                 extra={'where': ["catalogue_tag.category NOT IN ('set', 'book', 'theme')"]})
             categories = split_tags(related_tags)
                                 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,
             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}, 
+                                    filters={'pk__in': fragment_keys},

                                     extra={'where': ["catalogue_tag.category = 'theme'"]})
                                     extra={'where': ["catalogue_tag.category = 'theme'"]})

-                
-            books = books.exclude(parent__in = book_keys)
-            objects = books        
-        
+
+            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()
     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 object_list(
         request,
         objects,
         template_name='catalogue/tagged_object_list.html',
     return object_list(
         request,
         objects,
         template_name='catalogue/tagged_object_list.html',

-        extra_context = {
+        extra_context={

             'categories': categories,
             'shelf_is_set': shelf_is_set,
             'only_author': only_author,
             'categories': categories,
             'shelf_is_set': shelf_is_set,
             'only_author': only_author,


@@ -161,7 +161,7 @@ def book_fragments(request, book_slug, theme_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])
     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))
     form = forms.SearchForm()
     return render_to_response('catalogue/book_fragments.html', locals(),
         context_instance=RequestContext(request))


@@ -173,14 +173,14 @@ def book_detail(request, slug):
     except models.Book.DoesNotExist:
         return book_stub_detail(request, slug)
 
     except models.Book.DoesNotExist:
         return book_stub_detail(request, slug)
 

-    book_tag = get_object_or_404(models.Tag, slug = 'l-' + 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()
     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))
     form = forms.SearchForm()
     return render_to_response('catalogue/book_detail.html', locals(),
         context_instance=RequestContext(request))


@@ -190,10 +190,10 @@ def book_stub_detail(request, slug):
     book = get_object_or_404(models.BookStub, slug=slug)
     pd_counter = book.pd
     form = forms.SearchForm()
     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))
     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)
 
 def book_text(request, slug):
     book = get_object_or_404(models.Book, slug=slug)


@@ -201,7 +201,7 @@ def book_text(request, slug):
     for fragment in book.fragments.all():
         for theme in fragment.tags.filter(category='theme'):
             book_themes.setdefault(theme, []).append(fragment)
     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(),
     book_themes = book_themes.items()
     book_themes.sort(key=lambda s: s[0].sort_key)
     return render_to_response('catalogue/book_text.html', locals(),


@@ -223,7 +223,7 @@ def _no_diacritics_regexp(query):
     def repl(m):
         l = m.group()
         return u"(%s)" % '|'.join(names[l])
     def repl(m):
         l = m.group()
         return u"(%s)" % '|'.join(names[l])

-    return re.sub(u'[%s]'%(u''.join(names.keys())), repl, query)
+    return re.sub(u'[%s]' % (u''.join(names.keys())), repl, query)

 
 def unicode_re_escape(query):
     """ Unicode-friendly version of re.escape """
 
 def unicode_re_escape(query):
     """ Unicode-friendly version of re.escape """


@@ -247,7 +247,7 @@ def _word_starts_with(name, prefix):
 
     return Q(**kwargs)
 
 
     return Q(**kwargs)
 

-    
+

 def _sqlite_word_starts_with(name, prefix):
     """ version of _word_starts_with for SQLite 
     
 def _sqlite_word_starts_with(name, prefix):
     """ version of _word_starts_with for SQLite 
     


@@ -263,26 +263,25 @@ if settings.DATABASE_ENGINE == 'sqlite3':
     _word_starts_with = _sqlite_word_starts_with
 
 
     _word_starts_with = _sqlite_word_starts_with
 
 

-def _tags_starting_with(prefix, user):
+def _tags_starting_with(prefix, user=None):

     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)
     tags = models.Tag.objects.filter(_word_starts_with('name', prefix))
     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)
     tags = models.Tag.objects.filter(_word_starts_with('name', prefix))

-    if user.is_authenticated():
+    if user and 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)
         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 _get_result_link(match, tag_list):
     if isinstance(match, models.Book) or isinstance(match, models.BookStub):
         return match.get_absolute_url()
     else:
 
 
 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', 
+        return reverse('catalogue.views.tagged_object_list',

             kwargs={'tags': '/'.join(tag.slug for tag in tag_list + [match])}
         )
 
             kwargs={'tags': '/'.join(tag.slug for tag in tag_list + [match])}
         )
 


@@ -292,10 +291,10 @@ def _get_result_type(match):
     else:
         type = match.category
     return dict(models.TAG_CATEGORIES)[type]
     else:
         type = match.category
     return dict(models.TAG_CATEGORIES)[type]

-    

 
 
 
 

-def find_best_matches(query, user):
+
+def find_best_matches(query, user=None):

     """ Finds a Book, Tag or Bookstub best matching a query.
     
     Returns a with:
     """ Finds a Book, Tag or Bookstub best matching a query.
     
     Returns a with:


@@ -305,28 +304,28 @@ def find_best_matches(query, user):
     
     Raises a ValueError on too short a query.
     """
     
     Raises a ValueError on too short a query.
     """

-    
+

     query = query.lower()
     if len(query) < 2:
         raise ValueError("query must have at least two characters")
     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:
     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]    
+        return result[:1]

 
 
 def search(request):
     tags = request.GET.get('tags', '')
     prefix = request.GET.get('q', '')
 
 
 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 = []
     try:
         tag_list = models.Tag.get_tag_list(tags)
     except:
         tag_list = []

-    
+

     try:
         result = find_best_matches(prefix, request.user)
     except ValueError:
     try:
         result = find_best_matches(prefix, request.user)
     except ValueError:


@@ -336,7 +335,7 @@ def search(request):
     if len(result) == 1:
         return HttpResponseRedirect(_get_result_link(result[0], tag_list))
     elif len(result) > 1:
     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', 
+        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:
             {'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:


@@ -349,7 +348,7 @@ def tags_starting_with(request):
     # Prefix must have at least 2 characters
     if len(prefix) < 2:
         return HttpResponse('')
     # 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)))
 
 
     return HttpResponse('\n'.join(tag.name for tag in _tags_starting_with(prefix, request.user)))
 
 


@@ -369,24 +368,24 @@ 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)
     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>To maintain your shelves you need to be logged in.</p>'))
     if not request.user.is_authenticated():
         return HttpResponse(_('<p>To maintain your shelves you need to be logged in.</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']]
     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 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()
             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>Shelves were sucessfully saved.</p>'))
             book.tags = new_shelves + list(book.tags.filter(~Q(category='set') | ~Q(user=request.user)))
             if request.is_ajax():
                 return HttpResponse(_('<p>Shelves were sucessfully saved.</p>'))


@@ -395,7 +394,7 @@ def book_sets(request, slug):
     else:
         form = forms.ObjectSetsForm(book, request.user)
         new_set_form = forms.NewSetForm()
     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))
 
     return render_to_response('catalogue/book_sets.html', locals(),
         context_instance=RequestContext(request))
 


@@ -406,7 +405,7 @@ def book_sets(request, slug):
 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)
 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)
 
     if shelf in book.tags:
         models.Tag.objects.remove_tag(book, shelf)
 


@@ -439,18 +438,18 @@ def download_shelf(request, slug):
     be used for large dynamic PDF files.                                        
     """
     shelf = get_object_or_404(models.Tag, slug=slug, category='set')
     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']
     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')
     # Create a ZIP archive
     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
     for book in collect_books(models.Book.tagged.with_all(shelf)):
         if 'pdf' in formats and book.pdf_file:
             filename = book.pdf_file.path


@@ -468,11 +467,11 @@ def download_shelf(request, slug):
             filename = book.ogg_file.path
             archive.write(filename, str('%s.ogg' % book.slug))
     archive.close()
             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()
     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
     temp.seek(0)
     response.write(temp.read())
     return response


@@ -486,7 +485,7 @@ def shelf_book_formats(request, shelf):
     shelf = get_object_or_404(models.Tag, slug=shelf, category='set')
 
     formats = {'pdf': False, 'odt': False, 'txt': False, 'mp3': False, 'ogg': False}
     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
     for book in collect_books(models.Book.tagged.with_all(shelf)):
         if book.pdf_file:
             formats['pdf'] = True


@@ -553,7 +552,7 @@ def register(request):
     if registration_form.is_valid():
         user = registration_form.save()
         user = auth.authenticate(
     if registration_form.is_valid():
         user = registration_form.save()
         user = auth.authenticate(

-            username=registration_form.cleaned_data['username'], 
+            username=registration_form.cleaned_data['username'],

             password=registration_form.cleaned_data['password1']
         )
         auth.login(request, user)
             password=registration_form.cleaned_data['password1']
         )
         auth.login(request, user)