Added feeds to blogs.
[philo.git] / contrib / penfield / models.py
index 374fb49..a2b9e59 100644 (file)
@@ -1,25 +1,49 @@
 from django.db import models
-from philo.models import Entity, Collection, MultiNode, Template, register_value_model
-from django.contrib.auth.models import User
-from django.conf.urls.defaults import url, patterns
+from django.conf import settings
+from philo.models import Tag, Titled, Entity, MultiView, Page, register_value_model
+from philo.exceptions import ViewCanNotProvideSubpath
+from django.conf.urls.defaults import url, patterns, include
+from django.core.urlresolvers import reverse
 from django.http import Http404, HttpResponse
+from datetime import datetime
+from philo.utils import paginate
+from philo.contrib.penfield.validators import validate_pagination_count
+from django.utils.feedgenerator import Atom1Feed, Rss201rev2Feed
 
 
-class Entry(Entity):
-       author = models.ForeignKey(User, related_name='blogpost_author')
-       pub_date = models.DateTimeField(auto_now_add=True)
-       mod_date = models.DateTimeField(auto_now=True)
-       title = models.CharField(max_length=255)
-       slug = models.SlugField()
+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).distinct()
+       
+       @property
+       def entry_dates(self):
+               dates = {'year': self.entries.dates('date', 'year', order='DESC'), 'month': self.entries.dates('date', 'month', order='DESC'), 'day': self.entries.dates('date', 'day', order='DESC')}
+               return dates
+
+
+register_value_model(Blog)
+
+
+class BlogEntry(Entity, Titled):
+       blog = models.ForeignKey(Blog, related_name='entries', blank=True, null=True)
+       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()
+       excerpt = models.TextField(blank=True, null=True)
+       tags = models.ManyToManyField(Tag, related_name='blogentries', blank=True, null=True)
+       
+       class Meta:
+               ordering = ['-date']
+               verbose_name_plural = "blog entries"
 
 
-register_value_model(Entry)
+register_value_model(BlogEntry)
 
 
-class Blog(MultiNode):
-       PERMALINK_STYLE_CHOICES = (
+class BlogView(MultiView):
+       ENTRY_PERMALINK_STYLE_CHOICES = (
                ('D', 'Year, month, and day'),
                ('M', 'Year and month'),
                ('Y', 'Year'),
@@ -27,65 +51,380 @@ class Blog(MultiNode):
                ('N', 'No base')
        )
        
-       posts = models.ForeignKey(Collection, related_name='blogs')
-       index_template = models.ForeignKey(Template, related_name='blog_index_related')
-       archive_template = models.ForeignKey(Template, related_name='blog_archive_related')
-       tag_template = models.ForeignKey(Template, related_name='blog_tag_related')
-       post_template = models.ForeignKey(Template, related_name='blog_post_related')
+       blog = models.ForeignKey(Blog, related_name='blogviews')
+       
+       index_page = models.ForeignKey(Page, related_name='blog_index_related')
+       entry_page = models.ForeignKey(Page, related_name='blog_entry_related')
+       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)
        
-       post_permalink_style = models.CharField(max_length=1, choices=PERMALINK_STYLE_CHOICES)
-       post_permalink_base = models.CharField(max_length=255, blank=False, default='posts')
+       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')
+       feed_suffix = models.CharField(max_length=255, blank=False, default='feed')
+       feeds_enabled = models.BooleanField() 
+       
+       def __unicode__(self):
+               return u'BlogView for %s' % self.blog.title
        
        @property
-       def post_queryset(self):
-               # this won't be ordered according to the collection member indexes
-               return self.posts.members.with_model(Entry)
+       def _feeds_enabled(self):
+               return self.feeds_enabled
+       
+       @property
+       def per_page(self):
+               return self.entries_per_page
+       
+       def get_subpath(self, obj):
+               if isinstance(obj, BlogEntry):
+                       if obj.blog == self.blog:
+                               entry_view_args = {'slug': obj.slug}
+                               if self.entry_permalink_style in 'DMY':
+                                       entry_view_args.update({'year': str(obj.date.year).zfill(4)})
+                                       if self.entry_permalink_style in 'DM':
+                                               entry_view_args.update({'month': str(obj.date.month).zfill(2)})
+                                               if self.entry_permalink_style == 'D':
+                                                       entry_view_args.update({'day': str(obj.date.day).zfill(2)})
+                               return reverse(self.entry_view, urlconf=self, kwargs=entry_view_args)
+               elif isinstance(obj, Tag):
+                       if obj in self.blog.entry_tags:
+                               return reverse(self.tag_view, urlconf=self, kwargs={'tag_slugs': obj.slug})
+               elif isinstance(obj, (str, unicode)):
+                       split_obj = obj.split(':')
+                       if len(split_obj) > 1:
+                               entry_archive_view_args = {}
+                               if split_obj[0].lower() == 'archives':
+                                       entry_archive_view_args.update({'year': str(int(split_obj[1])).zfill(4)})
+                                       if len(split_obj) > 2:
+                                               entry_archive_view_args.update({'month': str(int(split_obj[2])).zfill(2)})
+                                               if len(split_obj) > 3:
+                                                       entry_archive_view_args.update({'day': str(int(split_obj[3])).zfill(2)})
+                                       return reverse(self.entry_archive_view, urlconf=self, kwargs=entry_archive_view_args)
+               raise ViewCanNotProvideSubpath
+
+       def page_view(self, func, page, list_var='entries'):
+               """
+               Wraps an object-fetching function and renders the results as a page.
+               """
+               def inner(request, node=None, extra_context=None, **kwargs):
+                       objects, extra_context = func(request, node, extra_context, **kwargs)
+
+                       context = self.get_context()
+                       context.update(extra_context or {})
+
+                       if 'page' in kwargs or 'page' in request.GET:
+                               page_num = kwargs.get('page', request.GET.get('page', 1))
+                               paginator, paginated_page, objects = paginate(objects, self.per_page, page_num)
+                               context.update({'paginator': paginator, 'paginated_page': paginated_page, list_var: objects})
+                       else:
+                               context.update({list_var: objects})
+
+                       return page.render_to_response(node, request, extra_context=context)
+
+               return inner
+
+       def get_atom_feed(self):
+               return Atom1Feed(self.blog.title, '/%s/%s/' % (node.get_absolute_url().strip('/'), reverse(reverse_name, urlconf=self, kwargs=kwargs).strip('/')), '', subtitle='')
+       
+       def get_rss_feed(self):
+               return Rss201rev2Feed(self.blog.title, '/%s/%s/' % (node.get_absolute_url().strip('/'), reverse(reverse_name, urlconf=self, kwargs=kwargs).strip('/')), '')
+
+       def feed_view(self, func, reverse_name):
+               """
+               Wraps an object-fetching function and renders the results as a rss or atom feed.
+               """
+               def inner(request, node=None, extra_context=None, **kwargs):
+                       objects, extra_context = func(request, node, extra_context, **kwargs)
+                       
+                       if 'HTTP_ACCEPT' in request.META and 'rss' in request.META['HTTP_ACCEPT'] and 'atom' not in request.META['HTTP_ACCEPT']:
+                               feed = self.get_rss_feed()
+                       else:
+                               feed = self.get_atom_feed()
+                       
+                       for obj in objects:
+                               feed.add_item(obj.title, '/%s/%s/' % (node.get_absolute_url().strip('/'), self.get_subpath(obj).strip('/')), description=obj.excerpt)
+                       
+                       response = HttpResponse(mimetype=feed.mime_type)
+                       feed.write(response, 'utf-8')
+                       return response
+               
+               return inner
+       
+       def get_context(self):
+               return {'blog': self.blog}
+       
+       def feed_patterns(self, object_fetcher, page, base_name):
+               feed_name = '%s_feed' % base_name
+               urlpatterns = patterns('',
+                       url(r'^%s/$' % self.feed_suffix, self.feed_view(object_fetcher, feed_name), name=feed_name),
+                       url(r'^$', self.page_view(object_fetcher, page), name=base_name)
+               )
+               return urlpatterns
        
        @property
        def urlpatterns(self):
                base_patterns = patterns('',
-                       url(r'^$', self.index_view),
-                       url((r'^(?:%s)/?' % self.tag_permalink_base), self.tag_view),
-                       url((r'^(?:%s)/(?P<tag>\w+)/?' % self.tag_permalink_base), self.tag_view)
+                       url(r'^', include(self.feed_patterns(self.get_all_entries, self.index_page, 'index'))),
+                       url((r'^(?:%s)/?$' % self.tag_permalink_base), self.tag_archive_view),
+                       url((r'^(?:%s)/(?P<tag_slugs>[-\w]+[-+/\w]*)/' % self.tag_permalink_base), include(self.feed_patterns(self.get_entries_by_tag, self.tag_page, 'entries_by_tag')))
                )
-               if self.post_permalink_style == 'D':
-                       post_patterns = patterns('',
-                               url(r'^(?P<year>\d{4})/?$', self.archive_view),
-                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/?$', self.archive_view),
-                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d+)/?$', self.archive_view),
-                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d+)/(?P<slug>\w+)/?', self.archive_view)
+               if self.entry_permalink_style == 'D':
+                       entry_patterns = patterns('',
+                               url(r'^(?P<year>\d{4})/', include(self.feed_patterns(self.get_entries_by_ymd, self.entry_archive_page, 'entries_by_year'))),
+                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/?$', include(self.feed_patterns(self.get_entries_by_ymd, self.entry_archive_page, 'entries_by_month'))),
+                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/?$', include(self.feed_patterns(self.get_entries_by_ymd, self.entry_archive_page, 'entries_by_day'))),
+                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-\w]+)/?$', self.entry_view)
                        )
-               elif self.post_permalink_style == 'M':
-                       post_patterns = patterns('',
-                               url(r'^(?P<year>\d{4})/?$', self.archive_view),
-                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/?$', self.archive_view),
-                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>\w+)/?', self.archive_view)
+               elif self.entry_permalink_style == 'M':
+                       entry_patterns = patterns('',
+                               url(r'^(?P<year>\d{4})/', include(self.feed_patterns(self.get_entries_by_ymd, self.entry_archive_page, 'entries_by_year'))),
+                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/?$', include(self.feed_patterns(self.get_entries_by_ymd, self.entry_archive_page, 'entries_by_month'))),
+                               url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>[-\w]+)/?$', self.entry_view)
                        )
-               elif self.post_permalink_style == 'Y':
-                       post_patterns = patterns('',
-                               url(r'^(?P<year>\d{4})/?$', self.archive_view),
-                               url(r'^(?P<year>\d{4})/(?P<slug>\w+)/?', self.post_view)
+               elif self.entry_permalink_style == 'Y':
+                       entry_patterns = patterns('',
+                               url(r'^(?P<year>\d{4})/', include(self.feed_patterns(self.get_entries_by_ymd, self.entry_archive_page, 'entries_by_year'))),
+                               url(r'^(?P<year>\d{4})/(?P<slug>[-\w]+)/?$', self.entry_view)
                        )
-               elif self.post_permalink_style == 'B':
-                       post_patterns = patterns('',
-                               url((r'^(?:%s)/?' % self.post_permalink_base), self.archive_view),
-                               url((r'^(?:%s)/(?P<slug>\w+)/?' % self.post_permalink_base), self.post_view)
+               elif self.entry_permalink_style == 'B':
+                       entry_patterns = patterns('',
+                               url((r'^(?:%s)/?$' % self.entry_permalink_base), 
+                                       url(r'^(?P<year>\d{4})/', include(self.feed_patterns(self.get_all_entries, self.entry_archive_page, 'entries_by_year'))),),
+                               url((r'^(?:%s)/(?P<slug>[-\w]+)/?$' % self.entry_permalink_base), self.entry_view)
+                       )
+               else:
+                       entry_patterns = patterns('',
+                               url(r'^(?P<slug>[-\w]+)/?$', self.entry_view)
+                       )
+               return base_patterns + entry_patterns
+       
+       def get_all_entries(self, request, node=None, extra_context=None):
+               return self.blog.entries.all(), extra_context
+       
+       def get_entries_by_ymd(self, request, year=None, month=None, day=None, node=None, extra_context=None):
+               if not self.entry_archive_page:
+                       raise Http404
+               entries = self.blog.entries.all()
+               if year:
+                       entries = entries.filter(date__year=year)
+               if month:
+                       entries = entries.filter(date__month=month)
+               if day:
+                       entries = entries.filter(date__day=day)
+               
+               context = extra_context or {}
+               context.update({'year': year, 'month': month, 'day': day})
+               return entries, context
+       
+       def get_entries_by_tag(self, request, 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.all()
+               for tag in tags:
+                       entries = entries.filter(tags=tag)
+               if entries.count() <= 0:
+                       raise Http404
+               
+               return entries, extra_context
+       
+       def entry_view(self, request, slug, year=None, month=None, day=None, node=None, extra_context=None):
+               entries = self.blog.entries.all()
+               if year:
+                       entries = entries.filter(date__year=year)
+               if month:
+                       entries = entries.filter(date__month=month)
+               if day:
+                       entries = entries.filter(date__day=day)
+               try:
+                       entry = entries.get(slug=slug)
+               except:
+                       raise Http404
+               context = self.get_context()
+               context.update(extra_context or {})
+               context.update({'entry': entry})
+               return self.entry_page.render_to_response(node, request, extra_context=context)
+       
+       def tag_archive_view(self, request, node=None, extra_context=None):
+               if not self.tag_archive_page:
+                       raise Http404
+               context = {}
+               context.update(extra_context or {})
+               context.update({'blog': self.blog})
+               return self.tag_archive_page.render_to_response(node, request, extra_context=context)
+
+
+class Newsletter(Entity, Titled):
+       pass
+
+
+register_value_model(Newsletter)
+
+
+class NewsletterArticle(Entity, Titled):
+       newsletter = models.ForeignKey(Newsletter, related_name='articles')
+       authors = models.ManyToManyField(getattr(settings, 'PHILO_PERSON_MODULE', 'auth.User'), related_name='newsletterarticles')
+       date = models.DateTimeField(default=datetime.now)
+       lede = models.TextField(null=True, blank=True)
+       full_text = models.TextField()
+       
+       class Meta:
+               get_latest_by = 'date'
+               ordering = ['-date']
+               unique_together = (('newsletter', 'slug'),)
+
+
+register_value_model(NewsletterArticle)
+
+
+class NewsletterIssue(Entity, Titled):
+       newsletter = models.ForeignKey(Newsletter, related_name='issues')
+       number = models.PositiveIntegerField()
+       articles = models.ManyToManyField(NewsletterArticle, related_name='issues')
+       
+       class Meta:
+               ordering = ['-number']
+               unique_together = (('newsletter', 'number'),)
+
+
+register_value_model(NewsletterIssue)
+
+
+class NewsletterView(MultiView):
+       ARTICLE_PERMALINK_STYLE_CHOICES = (
+               ('D', 'Year, month, and day'),
+               ('M', 'Year and month'),
+               ('Y', 'Year'),
+               ('S', 'Slug only')
+       )
+       
+       newsletter = models.ForeignKey(Newsletter, related_name='newsletterviews')
+       
+       index_page = models.ForeignKey(Page, related_name='newsletter_index_related')
+       article_page = models.ForeignKey(Page, related_name='newsletter_article_related')
+       article_archive_page = models.ForeignKey(Page, related_name='newsletter_article_archive_related', null=True, blank=True)
+       issue_page = models.ForeignKey(Page, related_name='newsletter_issue_related')
+       issue_archive_page = models.ForeignKey(Page, related_name='newsletter_issue_archive_related', null=True, blank=True)
+       
+       article_permalink_style = models.CharField(max_length=1, choices=ARTICLE_PERMALINK_STYLE_CHOICES)
+       article_permalink_base = models.CharField(max_length=255, blank=False, default='articles')
+       issue_permalink_base = models.CharField(max_length=255, blank=False, default='issues')
+       
+       def get_subpath(self, obj):
+               if isinstance(obj, NewsletterArticle):
+                       if obj.newsletter == self.newsletter:
+                               article_view_args = {'slug': obj.slug}
+                               if self.article_permalink_style in 'DMY':
+                                       article_view_args.update({'year': str(obj.date.year).zfill(4)})
+                                       if self.article_permalink_style in 'DM':
+                                               article_view_args.update({'month': str(obj.date.month).zfill(2)})
+                                               if self.article_permalink_style == 'D':
+                                                       article_view_args.update({'day': str(obj.date.day).zfill(2)})
+                               return reverse(self.article_view, urlconf=self, kwargs=article_view_args)
+               elif isinstance(obj, NewsletterIssue):
+                       if obj.newsletter == self.newsletter:
+                               return reverse(self.issue_view, urlconf=self, kwargs={'number': str(obj.number)})
+               raise ViewCanNotProvideSubpath
+       
+       @property
+       def urlpatterns(self):
+               base_patterns = patterns('',
+                       url(r'^$', self.index_view),
+                       url((r'^(?:%s)/?$' % self.issue_permalink_base), self.issue_archive_view),
+                       url((r'^(?:%s)/(?P<number>\d+)/?$' % self.issue_permalink_base), self.issue_view)
+               )
+               article_patterns = patterns('',
+                       url((r'^(?:%s)/?$' % self.article_permalink_base), self.article_archive_view)
+               )
+               if self.article_permalink_style in 'DMY':
+                       article_patterns += patterns('',
+                               url((r'^(?:%s)/(?P<year>\d{4})/?$' % self.article_permalink_base), self.article_archive_view)
                        )
+                       if self.article_permalink_style in 'DM':
+                               article_patterns += patterns('',
+                                       url((r'^(?:%s)/(?P<year>\d{4})/(?P<month>\d{2})/?$' % self.article_permalink_base), self.article_archive_view)
+                               )
+                               if self.article_permalink_style == 'D':
+                                       article_patterns += patterns('',
+                                               url((r'^(?:%s)/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/?$' % self.article_permalink_base), self.article_archive_view),
+                                               url((r'^(?:%s)/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-\w]+)/?$' % self.article_permalink_base), self.article_view)
+                                       )
+                               else:
+                                       article_patterns += patterns('',
+                                               url((r'^(?:%s)/(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>[-\w]+)/?$' % self.article_permalink_base), self.article_view)
+                                       )
+                       else:
+                               article_patterns += patterns('',
+                                       url((r'^(?:%s)/(?P<year>\d{4})/(?P<slug>[-\w]+)/?$' % self.article_permalink_base), self.article_view)
+                               )
                else:
-                       post_patterns = patterns('',
-                               url(r'^(?P<slug>\w+)/?', self.post_view)
+                       article_patterns += patterns('',
+                               url((r'^(?:%s)/(?P<slug>[-\w]+)/?$' % self.article_permalink_base), self.article_view)
                        )
-               return base_patterns + post_patterns
+               return base_patterns + article_patterns
+       
+       def index_view(self, request, node=None, extra_context=None):
+               context = {}
+               context.update(extra_context or {})
+               context.update({'newsletter': self.newsletter})
+               return self.index_page.render_to_response(node, request, extra_context=context)
        
-       def index_view(self, request):
-               raise Http404
+       def article_view(self, request, slug, year=None, month=None, day=None, node=None, extra_context=None):
+               articles = self.newsletter.articles.all()
+               if year:
+                       articles = articles.filter(date__year=year)
+               if month:
+                       articles = articles.filter(date__month=month)
+               if day:
+                       articles = articles.filter(date__day=day)
+               try:
+                       article = articles.get(slug=slug)
+               except:
+                       raise Http404
+               context = {}
+               context.update(extra_context or {})
+               context.update({'newsletter': self.newsletter, 'article': article})
+               return self.article_page.render_to_response(node, request, extra_context=context)
        
-       def archive_view(self, request, year=None, month=None, day=None):
-               raise Http404
+       def article_archive_view(self, request, year=None, month=None, day=None, node=None, extra_context=None):
+               if not self.article_archive_page:
+                       raise Http404
+               articles = self.newsletter.articles.all()
+               if year:
+                       articles = articles.filter(date__year=year)
+               if month:
+                       articles = articles.filter(date__month=month)
+               if day:
+                       articles = articles.filter(date__day=day)
+               context = {}
+               context.update(extra_context or {})
+               context.update({'newsletter': self.newsletter, 'year': year, 'month': month, 'day': day, 'articles': articles})
+               return self.article_archive_page.render_to_response(node, request, extra_context=context)
        
-       def tag_view(self, request, tag=None):
-               raise Http404
+       def issue_view(self, request, number, node=None, extra_context=None):
+               try:
+                       issue = self.newsletter.issues.get(number=number)
+               except:
+                       raise Http404
+               context = {}
+               context.update(extra_context or {})
+               context.update({'newsletter': self.newsletter, 'issue': issue})
+               return self.issue_page.render_to_response(node, request, extra_context=context)
        
-       def post_view(self, request, year=None, month=None, day=None, slug=None):
-               raise Http404
+       def issue_archive_view(self, request, node=None, extra_context=None):
+               if not self.issue_archive_page:
+                       raise Http404
+               context = {}
+               context.update(extra_context or {})
+               context.update({'newsletter': self.newsletter})
+               return self.issue_archive_page.render_to_response(node, request, extra_context=context)
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