Merge branch 'master' into obrazy
[wolnelektury.git] / apps / catalogue / views.py
index 9687db6..2acafcf 100644 (file)
@@ -6,7 +6,9 @@ import re
 import itertools
 
 from django.conf import settings
+from django.core.cache import get_cache
 from django.template import RequestContext
+from django.template.loader import render_to_string
 from django.shortcuts import render_to_response, get_object_or_404, redirect
 from django.http import HttpResponse, HttpResponseRedirect, Http404, HttpResponsePermanentRedirect
 from django.core.urlresolvers import reverse
@@ -15,67 +17,121 @@ from django.contrib.auth.decorators import login_required, user_passes_test
 from django.utils.datastructures import SortedDict
 from django.utils.http import urlquote_plus
 from django.utils import translation
-from django.utils.translation import ugettext as _, ugettext_lazy
-from django.views.decorators.cache import never_cache
+from django.utils.translation import get_language, ugettext as _, ugettext_lazy
+from django.views.decorators.vary import vary_on_headers
 
 from ajaxable.utils import JSONResponse, AjaxableFormView
-
 from catalogue import models
 from catalogue import forms
 from catalogue.utils import split_tags, MultiQuerySet
+from catalogue.templatetags.catalogue_tags import tag_list, collection_list
 from pdcounter import models as pdcounter_models
 from pdcounter import views as pdcounter_views
 from suggest.forms import PublishingSuggestForm
 from picture.models import Picture
+from picture.views import picture_list_thumb
 
 staff_required = user_passes_test(lambda user: user.is_staff)
+permanent_cache = get_cache('permanent')
 
 
+@vary_on_headers('X-Requested-With')
 def catalogue(request):
-    tags = models.Tag.objects.exclude(
-        category__in=('set', 'book')).exclude(book_count=0)
-    tags = list(tags)
-    for tag in tags:
-        tag.count = tag.book_count
-    categories = split_tags(tags)
-    fragment_tags = categories.get('theme', [])
-
-    return render_to_response('catalogue/catalogue.html', locals(),
-        context_instance=RequestContext(request))
+    cache_key='catalogue.catalogue/' + get_language()
+    output = permanent_cache.get(cache_key)
+
+    if output is None:
+        tags = models.Tag.objects.exclude(
+            category__in=('set', 'book')).exclude(book_count=0, picture_count=0)
+        tags = list(tags)
+        for tag in tags:
+            tag.count = tag.book_count + tag.picture_count
+        categories = split_tags(tags)
+        fragment_tags = categories.get('theme', [])
+        collections = models.Collection.objects.all()
+
+        render_tag_list = lambda x: render_to_string(
+            'catalogue/tag_list.html', tag_list(x))
+        has_pictures = lambda x: filter(lambda y: y.picture_count>0, x)
+        has_books = lambda x: filter(lambda y: y.book_count>0, x)
+        def render_split(tags):
+            with_books = has_books(tags)
+            with_pictures = has_pictures(tags)
+            ctx = {}
+            if with_books:
+                ctx['books'] = render_tag_list(with_books)
+            if with_pictures:
+                ctx['pictures'] = render_tag_list(with_pictures)
+            return render_to_string('catalogue/tag_list_split.html', ctx)
+
+        output = {'theme': {}}
+        output['theme'] = render_split(fragment_tags)
+        for category, tags in categories.items():
+            output[category] = render_split(tags)
+            
+        output['collections'] = render_to_string(
+            'catalogue/collection_list.html', collection_list(collections))
+        permanent_cache.set(cache_key, output)
+    if request.is_ajax():
+        return JSONResponse(output)
+    else:
+        return render_to_response('catalogue/catalogue.html', locals(),
+            context_instance=RequestContext(request))
 
 
-def book_list(request, filter=None, template_name='catalogue/book_list.html',
-        context=None):
+def book_list(request, filter=None, get_filter=None,
+        template_name='catalogue/book_list.html',
+        nav_template_name='catalogue/snippets/book_list_nav.html',
+        list_template_name='catalogue/snippets/book_list.html',
+        cache_key='catalogue.book_list',
+        context=None,
+        ):
     """ generates a listing of all books, optionally filtered with a test function """
-
-    books_by_author, orphans, books_by_parent = models.Book.book_list(filter)
-    books_nav = SortedDict()
-    for tag in books_by_author:
-        if books_by_author[tag]:
-            books_nav.setdefault(tag.sort_key[0], []).append(tag)
-
+    cache_key = "%s/%s" % (cache_key, get_language())
+    cached = permanent_cache.get(cache_key)
+    if cached is not None:
+        rendered_nav, rendered_book_list = cached
+    else:
+        if get_filter:
+            filter = get_filter()
+        books_by_author, orphans, books_by_parent = models.Book.book_list(filter)
+        books_nav = SortedDict()
+        for tag in books_by_author:
+            if books_by_author[tag]:
+                books_nav.setdefault(tag.sort_key[0], []).append(tag)
+        rendered_nav = render_to_string(nav_template_name, locals())
+        rendered_book_list = render_to_string(list_template_name, locals())
+        permanent_cache.set(cache_key, (rendered_nav, rendered_book_list))
     return render_to_response(template_name, locals(),
         context_instance=RequestContext(request))
 
 
 def audiobook_list(request):
     return book_list(request, Q(media__type='mp3') | Q(media__type='ogg'),
-                     template_name='catalogue/audiobook_list.html')
+                     template_name='catalogue/audiobook_list.html',
+                     list_template_name='catalogue/snippets/audiobook_list.html',
+                     cache_key='catalogue.audiobook_list')
 
 
 def daisy_list(request):
     return book_list(request, Q(media__type='daisy'),
-                     template_name='catalogue/daisy_list.html')
+                     template_name='catalogue/daisy_list.html',
+                     cache_key='catalogue.daisy_list')
 
 
 def collection(request, slug):
     coll = get_object_or_404(models.Collection, slug=slug)
-    slugs = coll.book_slugs.split()
-    # allow URIs
-    slugs = [slug.rstrip('/').rsplit('/', 1)[-1] if '/' in slug else slug
-                for slug in slugs]
-    return book_list(request, Q(slug__in=slugs),
-                     template_name='catalogue/collection.html',
+    if coll.kind == 'book':
+        view = book_list
+        tmpl = "catalogue/collection.html"
+    elif coll.kind == 'picture':
+        view = picture_list_thumb
+        tmpl = "picture/collection.html"
+    else:
+        raise ValueError('How do I show this kind of collection? %s' % coll.kind)
+    return view(request, get_filter=coll.get_query,
+                     template_name=tmpl,
+                     cache_key='catalogue.collection:%s' % coll.slug,
                      context={'collection': coll})
 
 
@@ -93,7 +149,6 @@ def differentiate_tags(request, tags, ambiguous_slugs):
                 context_instance=RequestContext(request))
 
 
-@never_cache
 def tagged_object_list(request, tags=''):
     try:
         tags = models.Tag.get_tag_list(tags)
@@ -157,7 +212,7 @@ def tagged_object_list(request, tags=''):
         # get related tags from `tag_counter` and `theme_counter`
         related_counts = {}
         tags_pks = [tag.pk for tag in tags]
-        for book in objects.iterator():
+        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
@@ -202,7 +257,6 @@ def book_fragments(request, slug, theme_slug):
         context_instance=RequestContext(request))
 
 
-@never_cache
 def book_detail(request, slug):
     try:
         book = models.Book.objects.get(slug=slug)
@@ -258,13 +312,7 @@ def book_text(request, slug):
 
     if not book.has_html_file():
         raise Http404
-    book_themes = {}
-    for fragment in book.fragments.all().iterator():
-        for theme in fragment.tags.filter(category='theme').iterator():
-            book_themes.setdefault(theme, []).append(fragment)
-
-    book_themes = book_themes.items()
-    book_themes.sort(key=lambda s: s[0].sort_key)
+    related = book.related_info()
     return render_to_response('catalogue/book_text.html', locals(),
         context_instance=RequestContext(request))
 
@@ -535,6 +583,11 @@ class CustomPDFFormView(AjaxableFormView):
     submit = ugettext_lazy('Download')
     honeypot = True
 
+    def __call__(self, *args, **kwargs):
+        if settings.NO_CUSTOM_PDF:
+            raise Http404('Custom PDF is disabled')
+        return super(CustomPDFFormView, self).__call__(*args, **kwargs)
+
     def form_args(self, request, obj):
         """Override to parse view args and give additional args to the form."""
         return (obj,), {}