Search widget with JSONP support. Sample included.

[wolnelektury.git] / apps / catalogue / views.py

diff --git a/apps/catalogue/views.py b/apps/catalogue/views.py
index 4476fd2..e7df9bc 100644 (file)
--- a/apps/catalogue/views.py
+++ b/apps/catalogue/views.py
@@ -9,7 +9,7 @@ import pprint
 import traceback
 import re
 import itertools
 import traceback
 import re
 import itertools

-from operator import itemgetter 
+from operator import itemgetter

 
 from django.conf import settings
 from django.template import RequestContext
 
 from django.conf import settings
 from django.template import RequestContext


@@ -45,16 +45,27 @@ class LazyEncoder(simplejson.JSONEncoder):
             return force_unicode(obj)
         return obj
 
             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()
 
 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)
     categories = split_tags(tags)

+    fragment_tags = categories.get('theme', [])

 
     form = forms.SearchForm()
     return render_to_response('catalogue/main_page.html', locals(),
 
     form = forms.SearchForm()
     return render_to_response('catalogue/main_page.html', locals(),


@@ -83,7 +94,7 @@ def differentiate_tags(request, tags, ambiguous_slugs):
             'tags': [tag]
         })
     return render_to_response('catalogue/differentiate_tags.html',
             'tags': [tag]
         })
     return render_to_response('catalogue/differentiate_tags.html',

-                {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]}, 
+                {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]},

                 context_instance=RequestContext(request))
 
 
                 context_instance=RequestContext(request))
 
 


@@ -105,8 +116,9 @@ def tagged_object_list(request, tags=''):
         raise Http404
 
     theme_is_set = [tag for tag in tags if tag.category == 'theme']
         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 = None
     categories = {}
 
     objects = only_author = pd_counter = None
     categories = {}


@@ -118,11 +130,11 @@ def tagged_object_list(request, 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 = [book.book_tag() 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:
             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:
         #                    extra={'where': ["catalogue_tag.category != 'book'"]})
         fragment_keys = [fragment.pk for fragment in fragments]
         if fragment_keys:


@@ -136,12 +148,13 @@ def tagged_object_list(request, tags=''):
     else:
         # get relevant books and their tags
         objects = models.Book.tagged.with_all(tags).order_by()
     else:
         # get relevant books and their tags
         objects = models.Book.tagged.with_all(tags).order_by()

-        l_tags = [book.book_tag() for book in objects]
-        # eliminate descendants
-        descendants_keys = [book.pk for book in models.Book.tagged.with_any(l_tags)]
-        if descendants_keys:
-            objects = objects.exclude(pk__in=descendants_keys)
-        
+        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]
         # get related tags from `tag_counter` and `theme_counter`
         related_counts = {}
         tags_pks = [tag.pk for tag in tags]


@@ -154,7 +167,7 @@ def tagged_object_list(request, tags=''):
         related_tags = [tag for tag in related_tags if tag not in tags]
         for tag in related_tags:
             tag.count = related_counts[tag.pk]
         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
 
         categories = split_tags(related_tags)
         del related_tags
 


@@ -169,10 +182,10 @@ def tagged_object_list(request, tags=''):
         template_name='catalogue/tagged_object_list.html',
         extra_context={
             'categories': categories,
         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,
             '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,
             'formats_form': forms.DownloadFormatsForm(),
 
             'tags': tags,


@@ -201,8 +214,12 @@ def book_detail(request, slug):
     tags = list(book.tags.filter(~Q(category='set')))
     categories = split_tags(tags)
     book_children = book.children.all().order_by('parent_number')
     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()
     extra_info = book.get_extra_info_value()
 
     form = forms.SearchForm()


@@ -238,7 +255,7 @@ def book_text(request, slug):
 
 def _no_diacritics_regexp(query):
     """ returns a regexp for searching for a query without diacritics
 
 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',
     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',


@@ -256,16 +273,16 @@ def unicode_re_escape(query):
 def _word_starts_with(name, prefix):
     """returns a Q object getting models having `name` contain a word
     starting with `prefix`
 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.
     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))
     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
 
     # but we want both `xy` and `(xy` to catch `(xyz)`
     kwargs['%s__iregex' % name] = u"(^|[^[:alnum:]_])%s" % prefix
 


@@ -273,8 +290,8 @@ def _word_starts_with(name, prefix):
 
 
 def _sqlite_word_starts_with(name, 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 = {}
     SQLite in Django uses Python re module
     """
     kwargs = {}


@@ -297,7 +314,6 @@ def _tags_starting_with(prefix, user=None):
         tags = tags.filter(~Q(category='book') & (~Q(category='set') | Q(user=user)))
     else:
         tags = tags.filter(~Q(category='book') & ~Q(category='set'))
         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 list(books) + list(tags) + list(book_stubs)
 
 


@@ -314,18 +330,18 @@ def _get_result_type(match):
         type = 'book'
     else:
         type = match.category
         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.
 
 
 
 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
     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.
     """
 
     Raises a ValueError on too short a query.
     """
 


@@ -372,8 +388,29 @@ 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)))
+    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 =
 
 # ====================
 # = Shelf management =


@@ -402,11 +439,11 @@ def book_sets(request, slug):
             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]:
             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.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)))
                 shelf.save()
 
             book.tags = new_shelves + list(book.tags.filter(~Q(category='set') | ~Q(user=request.user)))


@@ -432,7 +469,7 @@ def remove_from_shelf(request, shelf, book):
     if shelf in book.tags:
         models.Tag.objects.remove_tag(book, shelf)
 
     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'))
         shelf.save()
 
         return HttpResponse(_('Book was successfully removed from the shelf'))


@@ -458,7 +495,7 @@ 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
     """"
     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')
 
     """
     shelf = get_object_or_404(models.Tag, slug=slug, category='set')
 


@@ -612,7 +649,6 @@ def import_book(request):
             info = sys.exc_info()
             exception = pprint.pformat(info[1])
             tb = '\n'.join(traceback.format_tb(info[2]))
             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:
             return HttpResponse(_("An error occurred: %(exception)s\n\n%(tb)s") % {'exception':exception, 'tb':tb}, mimetype='text/plain')
         return HttpResponse(_("Book imported successfully"))
     else: