Adding support to BlogView for filtering based on multiple tags.

[philo.git] / contrib / penfield / models.py

diff --git a/contrib/penfield/models.py b/contrib/penfield/models.py
index 371ea57..0d8a374 100644 (file)
--- a/contrib/penfield/models.py
+++ b/contrib/penfield/models.py
@@ -4,13 +4,18 @@ from philo.models import Tag, Titled, Entity, MultiView, Page, register_value_mo
 from django.conf.urls.defaults import url, patterns
 from django.http import Http404, HttpResponse
 from datetime import datetime
+from philo.contrib.penfield.utils import paginate
+from philo.contrib.penfield.validators import validate_pagination_count
 
 
 class Blog(Entity, Titled):
        @property
        def entry_tags(self):
                """ Returns a QuerySet of Tags that are used on any entries in this blog. """
-               return Tag.objects.filter(blogentries__blog=self)
+               return Tag.objects.filter(blogentries__blog=self).distinct()
+
+
+register_value_model(Blog)
 
 
 class BlogEntry(Entity, Titled):
@@ -18,8 +23,8 @@ class BlogEntry(Entity, Titled):
        author = models.ForeignKey(getattr(settings, 'PHILO_PERSON_MODULE', 'auth.User'), related_name='blogentries')
        date = models.DateTimeField(default=datetime.now)
        content = models.TextField()
-       excerpt = models.TextField()
-       tags = models.ManyToManyField(Tag, related_name='blogentries')
+       excerpt = models.TextField(blank=True, null=True)
+       tags = models.ManyToManyField(Tag, related_name='blogentries', blank=True, null=True)
        
        class Meta:
                ordering = ['-date']
@@ -45,17 +50,21 @@ class BlogView(MultiView):
        entry_archive_page = models.ForeignKey(Page, related_name='blog_entry_archive_related', null=True, blank=True)
        tag_page = models.ForeignKey(Page, related_name='blog_tag_related')
        tag_archive_page = models.ForeignKey(Page, related_name='blog_tag_archive_related', null=True, blank=True)
+       entries_per_page = models.IntegerField(blank=True, validators=[validate_pagination_count], null=True)
        
        entry_permalink_style = models.CharField(max_length=1, choices=ENTRY_PERMALINK_STYLE_CHOICES)
        entry_permalink_base = models.CharField(max_length=255, blank=False, default='entries')
        tag_permalink_base = models.CharField(max_length=255, blank=False, default='tags')
        
+       def __unicode__(self):
+               return u'BlogView for %s' % self.blog.title
+       
        @property
        def urlpatterns(self):
                base_patterns = patterns('',
                        url(r'^$', self.index_view),
                        url((r'^(?:%s)/?$' % self.tag_permalink_base), self.tag_archive_view),
-                       url((r'^(?:%s)/(?P<tag>[-\w]+)/?$' % self.tag_permalink_base), self.tag_view)
+                       url((r'^(?:%s)/(?P<tag_slugs>[-\w]+[-+/\w]*)/?$' % self.tag_permalink_base), self.tag_view)
                )
                if self.entry_permalink_style == 'D':
                        entry_patterns = patterns('',
@@ -87,9 +96,15 @@ class BlogView(MultiView):
                return base_patterns + entry_patterns
        
        def index_view(self, request, node=None, extra_context=None):
+               entries = self.blog.entries.all()
+               if self.entries_per_page:
+                       paginated_page = paginate(request, entries, self.entries_per_page)
+                       entries = paginated_page.object_list
+               else:
+                       paginated_page = None
                context = {}
                context.update(extra_context or {})
-               context.update({'blog': self.blog})
+               context.update({'blog': self.blog, 'entries': entries, 'paginated_page': paginated_page})
                return self.index_page.render_to_response(node, request, extra_context=context)
        
        def entry_view(self, request, slug, year=None, month=None, day=None, node=None, extra_context=None):
@@ -119,20 +134,42 @@ class BlogView(MultiView):
                        entries = entries.filter(date__month=month)
                if day:
                        entries = entries.filter(date__day=day)
+               if self.entries_per_page:
+                       paginated_page = paginate(request, entries, self.entries_per_page)
+                       entries = paginated_page.object_list
+               else:
+                       paginated_page = None
                context = {}
                context.update(extra_context or {})
-               context.update({'blog': self.blog, 'year': year, 'month': month, 'day': day, 'entries': entries})
+               context.update({'blog': self.blog, 'year': year, 'month': month, 'day': day, 'entries': entries, 'paginated_page': paginated_page})
                return self.entry_archive_page.render_to_response(node, request, extra_context=context)
        
-       def tag_view(self, request, tag, node=None, extra_context=None):
-               try:
-                       tag = self.blog.entry_tags.filter(slug=tag)
-               except:
+       def tag_view(self, request, tag_slugs, node=None, extra_context=None):
+               tags = []
+               for tag_slug in tag_slugs.replace('+', '/').split('/'):
+                       if tag_slug: # ignore blank slugs, handles for multiple consecutive separators (+ or /)
+                               try:
+                                       tag = self.blog.entry_tags.get(slug=tag_slug)
+                               except:
+                                       raise Http404
+                               tags.append(tag)
+               if len(tags) <= 0:
                        raise Http404
-               entries = self.blog.entries.filter(tags=tag)
+               
+               entries = self.blog.entries.all()
+               for tag in tags:
+                       entries = entries.filter(tags=tag)
+               if entries.count() <= 0:
+                       raise Http404
+               
+               if self.entries_per_page:
+                       paginated_page = paginate(request, entries, self.entries_per_page)
+                       entries = paginated_page.object_list
+               else:
+                       paginated_page = None
                context = {}
                context.update(extra_context or {})
-               context.update({'blog': self.blog, 'tag': tag, 'entries': entries})
+               context.update({'blog': self.blog, 'tags': tags, 'entries': entries, 'paginated_page': paginated_page})
                return self.tag_page.render_to_response(node, request, extra_context=context)
        
        def tag_archive_view(self, request, node=None, extra_context=None):