philo/contrib/penfield/models.py

   1 # encoding: utf-8
   2 from datetime import date, datetime
   3
   4 from django.conf import settings
   5 from django.conf.urls.defaults import url, patterns, include
   6 from django.db import models
   7 from django.http import Http404, HttpResponse
   8
   9 from philo.contrib.winer.models import FeedView
  10 from philo.exceptions import ViewCanNotProvideSubpath
  11 from philo.models import Tag, Entity, Page, register_value_model
  12 from philo.models.fields import TemplateField
  13 from philo.utils import paginate
  14
  15
  16 class Blog(Entity):
  17         """Represents a blog which can be posted to."""
  18         #: The name of the :class:`Blog`, currently called 'title' for historical reasons.
  19         title = models.CharField(max_length=255)
  20
  21         #: A slug used to identify the :class:`Blog`.
  22         slug = models.SlugField(max_length=255)
  23
  24         def __unicode__(self):
  25                 return self.title
  26
  27         @property
  28         def entry_tags(self):
  29                 """Returns a :class:`QuerySet` of :class:`.Tag`\ s that are used on any entries in this blog."""
  30                 return Tag.objects.filter(blogentries__blog=self).distinct()
  31
  32         @property
  33         def entry_dates(self):
  34                 """Returns a dictionary of date :class:`QuerySet`\ s for years, months, and days for which there are entries."""
  35                 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')}
  36                 return dates
  37
  38
  39 register_value_model(Blog)
  40
  41
  42 class BlogEntry(Entity):
  43         """Represents an entry in a :class:`Blog`."""
  44         #: The title of the :class:`BlogEntry`.
  45         title = models.CharField(max_length=255)
  46
  47         #: A slug which identifies the :class:`BlogEntry`.
  48         slug = models.SlugField(max_length=255)
  49
  50         #: The :class:`Blog` which this entry has been posted to. Can be left blank to represent a "draft" status.
  51         blog = models.ForeignKey(Blog, related_name='entries', blank=True, null=True)
  52
  53         #: A :class:`ForeignKey` to the author. The model is either :setting:`PHILO_PERSON_MODULE` or :class:`auth.User`.
  54         author = models.ForeignKey(getattr(settings, 'PHILO_PERSON_MODULE', 'auth.User'), related_name='blogentries')
  55
  56         #: The date and time which the :class:`BlogEntry` is considered posted at.
  57         date = models.DateTimeField(default=None)
  58
  59         #: The content of the :class:`BlogEntry`.
  60         content = models.TextField()
  61
  62         #: An optional brief excerpt from the :class:`BlogEntry`.
  63         excerpt = models.TextField(blank=True, null=True)
  64
  65         #: :class:`.Tag`\ s for this :class:`BlogEntry`.
  66         tags = models.ManyToManyField(Tag, related_name='blogentries', blank=True, null=True)
  67
  68         def save(self, *args, **kwargs):
  69                 if self.date is None:
  70                         self.date = datetime.now()
  71                 super(BlogEntry, self).save(*args, **kwargs)
  72
  73         def __unicode__(self):
  74                 return self.title
  75
  76         class Meta:
  77                 ordering = ['-date']
  78                 verbose_name_plural = "blog entries"
  79                 get_latest_by = "date"
  80
  81
  82 register_value_model(BlogEntry)
  83
  84
  85 class BlogView(FeedView):
  86         """
  87         A subclass of :class:`.FeedView` which handles patterns and feeds for a :class:`Blog` and its related :class:`entries <BlogEntry>`.
  88
  89         """
  90         ENTRY_PERMALINK_STYLE_CHOICES = (
  91                 ('D', 'Year, month, and day'),
  92                 ('M', 'Year and month'),
  93                 ('Y', 'Year'),
  94                 ('B', 'Custom base'),
  95                 ('N', 'No base')
  96         )
  97
  98         #: The :class:`Blog` whose entries should be managed by this :class:`BlogView`
  99         blog = models.ForeignKey(Blog, related_name='blogviews')
 100
 101         #: The main page of the :class:`Blog` will be rendered with this :class:`.Page`.
 102         index_page = models.ForeignKey(Page, related_name='blog_index_related')
 103         #: The detail view of a :class:`BlogEntry` will be rendered with this :class:`Page`.
 104         entry_page = models.ForeignKey(Page, related_name='blog_entry_related')
 105         # TODO: entry_archive is misleading. Rename to ymd_page or timespan_page.
 106         #: Views of :class:`BlogEntry` archives will be rendered with this :class:`Page` (optional).
 107         entry_archive_page = models.ForeignKey(Page, related_name='blog_entry_archive_related', null=True, blank=True)
 108         #: Views of :class:`BlogEntry` archives according to their :class:`.Tag`\ s will be rendered with this :class:`Page`.
 109         tag_page = models.ForeignKey(Page, related_name='blog_tag_related')
 110         #: The archive of all available tags will be rendered with this :class:`Page` (optional).
 111         tag_archive_page = models.ForeignKey(Page, related_name='blog_tag_archive_related', null=True, blank=True)
 112         #: This number will be passed directly into pagination for :class:`BlogEntry` list pages. Pagination will be disabled if this is left blank.
 113         entries_per_page = models.IntegerField(blank=True, null=True)
 114
 115         #: Depending on the needs of the site, different permalink styles may be appropriate. Example subpaths are provided for a :class:`BlogEntry` posted on May 2nd, 2011 with a slug of "hello". The choices are:
 116         #:
 117         #:      * Year, month, and day - ``2011/05/02/hello``
 118         #:      * Year and month - ``2011/05/hello``
 119         #:      * Year - ``2011/hello``
 120         #:      * Custom base - :attr:`entry_permalink_base`\ ``/hello``
 121         #:      * No base - ``hello``
 122         entry_permalink_style = models.CharField(max_length=1, choices=ENTRY_PERMALINK_STYLE_CHOICES)
 123         #: If the :attr:`entry_permalink_style` is set to "Custom base" then the value of this field will be used as the base subpath for year/month/day entry archive pages and entry detail pages. Default: "entries"
 124         entry_permalink_base = models.CharField(max_length=255, blank=False, default='entries')
 125         #: This will be used as the base for the views of :attr:`tag_page` and :attr:`tag_archive_page`. Default: "tags"
 126         tag_permalink_base = models.CharField(max_length=255, blank=False, default='tags')
 127
 128         item_context_var = 'entries'
 129
 130         def __unicode__(self):
 131                 return u'BlogView for %s' % self.blog.title
 132
 133         def get_reverse_params(self, obj):
 134                 if isinstance(obj, BlogEntry):
 135                         if obj.blog_id == self.blog_id:
 136                                 kwargs = {'slug': obj.slug}
 137                                 if self.entry_permalink_style in 'DMY':
 138                                         kwargs.update({'year': str(obj.date.year).zfill(4)})
 139                                         if self.entry_permalink_style in 'DM':
 140                                                 kwargs.update({'month': str(obj.date.month).zfill(2)})
 141                                                 if self.entry_permalink_style == 'D':
 142                                                         kwargs.update({'day': str(obj.date.day).zfill(2)})
 143                                 return self.entry_view, [], kwargs
 144                 elif isinstance(obj, Tag) or (isinstance(obj, models.query.QuerySet) and obj.model == Tag and obj):
 145                         if isinstance(obj, Tag):
 146                                 obj = [obj]
 147                         slugs = [tag.slug for tag in obj if tag in self.get_tag_queryset(self.blog)]
 148                         if slugs:
 149                                 return 'entries_by_tag', [], {'tag_slugs': "/".join(slugs)}
 150                 elif isinstance(obj, (date, datetime)):
 151                         kwargs = {
 152                                 'year': str(obj.year).zfill(4),
 153                                 'month': str(obj.month).zfill(2),
 154                                 'day': str(obj.day).zfill(2)
 155                         }
 156                         return 'entries_by_day', [], kwargs
 157                 raise ViewCanNotProvideSubpath
 158
 159         @property
 160         def urlpatterns(self):
 161                 urlpatterns = self.feed_patterns(r'^', 'get_entries', 'index_page', 'index') +\
 162                         self.feed_patterns(r'^%s/(?P<tag_slugs>[-\w]+[-+/\w]*)' % self.tag_permalink_base, 'get_entries', 'tag_page', 'entries_by_tag')
 163
 164                 if self.tag_archive_page_id:
 165                         urlpatterns += patterns('',
 166                                 url((r'^%s$' % self.tag_permalink_base), self.tag_archive_view, name='tag_archive')
 167                         )
 168
 169                 if self.entry_archive_page_id:
 170                         if self.entry_permalink_style in 'DMY':
 171                                 urlpatterns += self.feed_patterns(r'^(?P<year>\d{4})', 'get_entries', 'entry_archive_page', 'entries_by_year')
 172                                 if self.entry_permalink_style in 'DM':
 173                                         urlpatterns += self.feed_patterns(r'^(?P<year>\d{4})/(?P<month>\d{2})', 'get_entries', 'entry_archive_page', 'entries_by_month')
 174                                         if self.entry_permalink_style == 'D':
 175                                                 urlpatterns += self.feed_patterns(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})', 'get_entries', 'entry_archive_page', 'entries_by_day')
 176
 177                 if self.entry_permalink_style == 'D':
 178                         urlpatterns += patterns('',
 179                                 url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-\w]+)$', self.entry_view)
 180                         )
 181                 elif self.entry_permalink_style == 'M':
 182                         urlpatterns += patterns('',
 183                                 url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>[-\w]+)$', self.entry_view)
 184                         )
 185                 elif self.entry_permalink_style == 'Y':
 186                         urlpatterns += patterns('',
 187                                 url(r'^(?P<year>\d{4})/(?P<slug>[-\w]+)$', self.entry_view)
 188                         )
 189                 elif self.entry_permalink_style == 'B':
 190                         urlpatterns += patterns('',
 191                                 url((r'^%s/(?P<slug>[-\w]+)$' % self.entry_permalink_base), self.entry_view)
 192                         )
 193                 else:
 194                         urlpatterns += patterns('',
 195                                 url(r'^(?P<slug>[-\w]+)$', self.entry_view)
 196                         )
 197                 return urlpatterns
 198
 199         def get_entry_queryset(self, obj):
 200                 """Returns the default :class:`QuerySet` of :class:`BlogEntry` instances for the :class:`BlogView` - all entries that are considered posted in the past. This allows for scheduled posting of entries."""
 201                 return obj.entries.filter(date__lte=datetime.now())
 202
 203         def get_tag_queryset(self, obj):
 204                 """Returns the default :class:`QuerySet` of :class:`.Tag`\ s for the :class:`BlogView`'s :meth:`get_entries_by_tag` and :meth:`tag_archive_view`."""
 205                 return obj.entry_tags
 206
 207         def get_object(self, request, year=None, month=None, day=None, tag_slugs=None):
 208                 """Returns a dictionary representing the parameters for a feed which will be exposed."""
 209                 if tag_slugs is None:
 210                         tags = None
 211                 else:
 212                         tag_slugs = tag_slugs.replace('+', '/').split('/')
 213                         tags = self.get_tag_queryset(self.blog).filter(slug__in=tag_slugs)
 214                         if not tags:
 215                                 raise Http404
 216
 217                         # Raise a 404 on an incorrect slug.
 218                         found_slugs = set([tag.slug for tag in tags])
 219                         for slug in tag_slugs:
 220                                 if slug and slug not in found_slugs:
 221                                         raise Http404
 222
 223                 try:
 224                         if year and month and day:
 225                                 context_date = date(int(year), int(month), int(day))
 226                         elif year and month:
 227                                 context_date = date(int(year), int(month), 1)
 228                         elif year:
 229                                 context_date = date(int(year), 1, 1)
 230                         else:
 231                                 context_date = None
 232                 except TypeError, ValueError:
 233                         context_date = None
 234
 235                 return {
 236                         'blog': self.blog,
 237                         'tags': tags,
 238                         'year': year,
 239                         'month': month,
 240                         'day': day,
 241                         'date': context_date
 242                 }
 243
 244         def get_entries(self, obj, request, year=None, month=None, day=None, tag_slugs=None, extra_context=None):
 245                 """Returns the :class:`BlogEntry` objects which will be exposed for the given object, as returned from :meth:`get_object`."""
 246                 entries = self.get_entry_queryset(obj['blog'])
 247
 248                 if obj['tags'] is not None:
 249                         tags = obj['tags']
 250                         for tag in tags:
 251                                 entries = entries.filter(tags=tag)
 252
 253                 if obj['date'] is not None:
 254                         if year:
 255                                 entries = entries.filter(date__year=year)
 256                         if month:
 257                                 entries = entries.filter(date__month=month)
 258                         if day:
 259                                 entries = entries.filter(date__day=day)
 260
 261                 context = extra_context or {}
 262                 context.update(obj)
 263
 264                 return entries, context
 265
 266         def entry_view(self, request, slug, year=None, month=None, day=None, extra_context=None):
 267                 """Renders :attr:`entry_page` with the entry specified by the given parameters."""
 268                 entries = self.get_entry_queryset(self.blog)
 269                 if year:
 270                         entries = entries.filter(date__year=year)
 271                 if month:
 272                         entries = entries.filter(date__month=month)
 273                 if day:
 274                         entries = entries.filter(date__day=day)
 275                 try:
 276                         entry = entries.get(slug=slug)
 277                 except:
 278                         raise Http404
 279                 context = self.get_context()
 280                 context.update(extra_context or {})
 281                 context.update({'entry': entry})
 282                 return self.entry_page.render_to_response(request, extra_context=context)
 283
 284         def tag_archive_view(self, request, extra_context=None):
 285                 """Renders :attr:`tag_archive_page` with the result of :meth:`get_tag_queryset` added to the context."""
 286                 if not self.tag_archive_page:
 287                         raise Http404
 288                 context = self.get_context()
 289                 context.update(extra_context or {})
 290                 context.update({
 291                         'tags': self.get_tag_queryset(self.blog)
 292                 })
 293                 return self.tag_archive_page.render_to_response(request, extra_context=context)
 294
 295         def process_page_items(self, request, items):
 296                 """Overrides :meth:`.FeedView.process_page_items` to add pagination."""
 297                 if self.entries_per_page:
 298                         page_num = request.GET.get('page', 1)
 299                         paginator, paginated_page, items = paginate(items, self.entries_per_page, page_num)
 300                         item_context = {
 301                                 'paginator': paginator,
 302                                 'paginated_page': paginated_page,
 303                                 self.item_context_var: items
 304                         }
 305                 else:
 306                         item_context = {
 307                                 self.item_context_var: items
 308                         }
 309                 return items, item_context
 310
 311         def title(self, obj):
 312                 title = obj['blog'].title
 313                 if obj['tags']:
 314                         title += u" – %s" % u", ".join((tag.name for tag in obj['tags']))
 315                 date = obj['date']
 316                 if date:
 317                         if obj['day']:
 318                                 datestr = date.strftime("%F %j, %Y")
 319                         elif obj['month']:
 320                                 datestr = date.strftime("%F, %Y")
 321                         elif obj['year']:
 322                                 datestr = date.strftime("%Y")
 323                         title += u" – %s" % datestr
 324                 return title
 325
 326         def categories(self, obj):
 327                 tags = obj['tags']
 328                 if tags:
 329                         return (tag.name for tag in tags)
 330                 return None
 331
 332         def item_title(self, item):
 333                 return item.title
 334
 335         def item_description(self, item):
 336                 return item.content
 337
 338         def item_author_name(self, item):
 339                 return item.author.get_full_name()
 340
 341         def item_pubdate(self, item):
 342                 return item.date
 343
 344         def item_categories(self, item):
 345                 return [tag.name for tag in item.tags.all()]
 346
 347
 348 class Newsletter(Entity):
 349         """Represents a newsletter which will contain :class:`articles <NewsletterArticle>` organized into :class:`issues <NewsletterIssue>`."""
 350         #: The name of the :class:`Newsletter`, currently callse 'title' for historical reasons.
 351         title = models.CharField(max_length=255)
 352         #: A slug used to identify the :class:`Newsletter`.
 353         slug = models.SlugField(max_length=255)
 354
 355         def __unicode__(self):
 356                 return self.title
 357
 358
 359 register_value_model(Newsletter)
 360
 361
 362 class NewsletterArticle(Entity):
 363         """Represents an article in a :class:`Newsletter`"""
 364         #: The title of the :class:`NewsletterArticle`.
 365         title = models.CharField(max_length=255)
 366         #: A slug which identifies the :class:`NewsletterArticle`.
 367         slug = models.SlugField(max_length=255)
 368         #: A :class:`ForeignKey` to :class:`Newsletter` representing the newsletter which this article was written for.
 369         newsletter = models.ForeignKey(Newsletter, related_name='articles')
 370         #: A :class:`ManyToManyField` to the author(s) of the :class:`NewsletterArticle`. The model is either :setting:`PHILO_PERSON_MODULE` or :class:`auth.User`.
 371         authors = models.ManyToManyField(getattr(settings, 'PHILO_PERSON_MODULE', 'auth.User'), related_name='newsletterarticles')
 372         #: The date and time which the :class:`NewsletterArticle` is considered published at.
 373         date = models.DateTimeField(default=None)
 374         #: A :class:`.TemplateField` containing an optional short summary of the article, meant to grab a reader's attention and draw them in.
 375         lede = TemplateField(null=True, blank=True, verbose_name='Summary')
 376         #: A :class:`.TemplateField` containing the full text of the article.
 377         full_text = TemplateField(db_index=True)
 378         #: A :class:`ManyToManyField` to :class:`.Tag`\ s for the :class:`NewsletterArticle`.
 379         tags = models.ManyToManyField(Tag, related_name='newsletterarticles', blank=True, null=True)
 380
 381         def save(self, *args, **kwargs):
 382                 if self.date is None:
 383                         self.date = datetime.now()
 384                 super(NewsletterArticle, self).save(*args, **kwargs)
 385
 386         def __unicode__(self):
 387                 return self.title
 388
 389         class Meta:
 390                 get_latest_by = 'date'
 391                 ordering = ['-date']
 392                 unique_together = (('newsletter', 'slug'),)
 393
 394
 395 register_value_model(NewsletterArticle)
 396
 397
 398 class NewsletterIssue(Entity):
 399         """Represents an issue of the newsletter."""
 400         #: The title of the :class:`NewsletterIssue`.
 401         title = models.CharField(max_length=255)
 402         #: A slug which identifies the :class:`NewsletterIssue`.
 403         slug = models.SlugField(max_length=255)
 404         #: A :class:`ForeignKey` to the :class:`Newsletter` which this issue belongs to.
 405         newsletter = models.ForeignKey(Newsletter, related_name='issues')
 406         #: The numbering of the issue - for example, 04.02 for volume 4, issue 2. This is an instance of :class:`CharField` to allow any arbitrary numbering system.
 407         numbering = models.CharField(max_length=50, help_text='For example, 04.02 for volume 4, issue 2.')
 408         #: A :class:`ManyToManyField` to articles belonging to this issue.
 409         articles = models.ManyToManyField(NewsletterArticle, related_name='issues')
 410
 411         def __unicode__(self):
 412                 return self.title
 413
 414         class Meta:
 415                 ordering = ['-numbering']
 416                 unique_together = (('newsletter', 'numbering'),)
 417
 418
 419 register_value_model(NewsletterIssue)
 420
 421
 422 class NewsletterView(FeedView):
 423         """A subclass of :class:`.FeedView` which handles patterns and feeds for a :class:`Newsletter` and its related :class:`articles <NewsletterArticle>`."""
 424         ARTICLE_PERMALINK_STYLE_CHOICES = (
 425                 ('D', 'Year, month, and day'),
 426                 ('M', 'Year and month'),
 427                 ('Y', 'Year'),
 428                 ('S', 'Slug only')
 429         )
 430
 431         #: A :class:`ForeignKey` to the :class:`Newsletter` managed by this :class:`NewsletterView`.
 432         newsletter = models.ForeignKey(Newsletter, related_name='newsletterviews')
 433
 434         #: A :class:`ForeignKey` to the :class:`Page` used to render the main page of this :class:`NewsletterView`.
 435         index_page = models.ForeignKey(Page, related_name='newsletter_index_related')
 436         #: A :class:`ForeignKey` to the :class:`Page` used to render the detail view of a :class:`NewsletterArticle` for this :class:`NewsletterView`.
 437         article_page = models.ForeignKey(Page, related_name='newsletter_article_related')
 438         #: A :class:`ForeignKey` to the :class:`Page` used to render the :class:`NewsletterArticle` archive pages for this :class:`NewsletterView`.
 439         article_archive_page = models.ForeignKey(Page, related_name='newsletter_article_archive_related', null=True, blank=True)
 440         #: A :class:`ForeignKey` to the :class:`Page` used to render the detail view of a :class:`NewsletterIssue` for this :class:`NewsletterView`.
 441         issue_page = models.ForeignKey(Page, related_name='newsletter_issue_related')
 442         #: A :class:`ForeignKey` to the :class:`Page` used to render the :class:`NewsletterIssue` archive pages for this :class:`NewsletterView`.
 443         issue_archive_page = models.ForeignKey(Page, related_name='newsletter_issue_archive_related', null=True, blank=True)
 444
 445         #: Depending on the needs of the site, different permalink styles may be appropriate. Example subpaths are provided for a :class:`NewsletterArticle` posted on May 2nd, 2011 with a slug of "hello". The choices are:
 446         #:
 447         #:      * Year, month, and day - :attr:`article_permalink_base`\ ``/2011/05/02/hello``
 448         #:      * Year and month - :attr:`article_permalink_base`\ ``/2011/05/hello``
 449         #:      * Year - :attr:`article_permalink_base`\ ``/2011/hello``
 450         #:      * Slug only - :attr:`article_permalink_base`\ ``/hello``
 451         article_permalink_style = models.CharField(max_length=1, choices=ARTICLE_PERMALINK_STYLE_CHOICES)
 452         #: This will be used as the base subpath for year/month/day article archive pages and article detail pages. Default: "articles"
 453         article_permalink_base = models.CharField(max_length=255, blank=False, default='articles')
 454         #: This will be used as the base subpath for issue detail pages and the issue archive page.
 455         issue_permalink_base = models.CharField(max_length=255, blank=False, default='issues')
 456
 457         item_context_var = 'articles'
 458         object_attr = 'newsletter'
 459
 460         def __unicode__(self):
 461                 return "NewsletterView for %s" % self.newsletter.__unicode__()
 462
 463         def get_reverse_params(self, obj):
 464                 if isinstance(obj, NewsletterArticle):
 465                         if obj.newsletter_id == self.newsletter_id:
 466                                 kwargs = {'slug': obj.slug}
 467                                 if self.article_permalink_style in 'DMY':
 468                                         kwargs.update({'year': str(obj.date.year).zfill(4)})
 469                                         if self.article_permalink_style in 'DM':
 470                                                 kwargs.update({'month': str(obj.date.month).zfill(2)})
 471                                                 if self.article_permalink_style == 'D':
 472                                                         kwargs.update({'day': str(obj.date.day).zfill(2)})
 473                                 return self.article_view, [], kwargs
 474                 elif isinstance(obj, NewsletterIssue):
 475                         if obj.newsletter_id == self.newsletter_id:
 476                                 return 'issue', [], {'numbering': obj.numbering}
 477                 elif isinstance(obj, (date, datetime)):
 478                         kwargs = {
 479                                 'year': str(obj.year).zfill(4),
 480                                 'month': str(obj.month).zfill(2),
 481                                 'day': str(obj.day).zfill(2)
 482                         }
 483                         return 'articles_by_day', [], kwargs
 484                 raise ViewCanNotProvideSubpath
 485
 486         @property
 487         def urlpatterns(self):
 488                 urlpatterns = self.feed_patterns(r'^', 'get_all_articles', 'index_page', 'index') + patterns('',
 489                         url(r'^%s/(?P<numbering>.+)$' % self.issue_permalink_base, self.page_view('get_articles_by_issue', 'issue_page'), name='issue')
 490                 )
 491                 if self.issue_archive_page_id:
 492                         urlpatterns += patterns('',
 493                                 url(r'^%s$' % self.issue_permalink_base, self.issue_archive_view, 'issue_archive')
 494                         )
 495                 if self.article_archive_page_id:
 496                         urlpatterns += self.feed_patterns(r'^%s' % self.article_permalink_base, 'get_all_articles', 'article_archive_page', 'articles')
 497                         if self.article_permalink_style in 'DMY':
 498                                 urlpatterns += self.feed_patterns(r'^%s/(?P<year>\d{4})' % self.article_permalink_base, 'get_articles_by_ymd', 'article_archive_page', 'articles_by_year')
 499                                 if self.article_permalink_style in 'DM':
 500                                         urlpatterns += self.feed_patterns(r'^%s/(?P<year>\d{4})/(?P<month>\d{2})' % self.article_permalink_base, 'get_articles_by_ymd', 'article_archive_page', 'articles_by_month')
 501                                         if self.article_permalink_style == 'D':
 502                                                 urlpatterns += self.feed_patterns(r'^%s/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})' % self.article_permalink_base, 'get_articles_by_ymd', 'article_archive_page', 'articles_by_day')
 503
 504                 if self.article_permalink_style == 'Y':
 505                         urlpatterns += patterns('',
 506                                 url(r'^%s/(?P<year>\d{4})/(?P<slug>[\w-]+)$' % self.article_permalink_base, self.article_view)
 507                         )
 508                 elif self.article_permalink_style == 'M':
 509                         urlpatterns += patterns('',
 510                                 url(r'^%s/(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>[\w-]+)$' % self.article_permalink_base, self.article_view)
 511                         )
 512                 elif self.article_permalink_style == 'D':
 513                         urlpatterns += patterns('',
 514                                 url(r'^%s/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[\w-]+)$' % self.article_permalink_base, self.article_view)
 515                         )
 516                 else:
 517                         urlpatterns += patterns('',
 518                                 url(r'^%s/(?P<slug>[-\w]+)$' % self.article_permalink_base, self.article_view)
 519                         )
 520
 521                 return urlpatterns
 522
 523         def get_context(self):
 524                 return {'newsletter': self.newsletter}
 525
 526         def get_article_queryset(self, obj):
 527                 """Returns the default :class:`QuerySet` of :class:`NewsletterArticle` instances for the :class:`NewsletterView` - all articles that are considered posted in the past. This allows for scheduled posting of articles."""
 528                 return obj.articles.filter(date__lte=datetime.now())
 529
 530         def get_issue_queryset(self, obj):
 531                 """Returns the default :class:`QuerySet` of :class:`NewsletterIssue` instances for the :class:`NewsletterView`."""
 532                 return obj.issues.all()
 533
 534         def get_all_articles(self, obj, request, extra_context=None):
 535                 """Used to generate :meth:`~.FeedView.feed_patterns` for all entries."""
 536                 return self.get_article_queryset(obj), extra_context
 537
 538         def get_articles_by_ymd(self, obj, request, year, month=None, day=None, extra_context=None):
 539                 """Used to generate :meth:`~.FeedView.feed_patterns` for a specific year, month, and day."""
 540                 articles = self.get_article_queryset(obj).filter(date__year=year)
 541                 if month:
 542                         articles = articles.filter(date__month=month)
 543                 if day:
 544                         articles = articles.filter(date__day=day)
 545                 return articles, extra_context
 546
 547         def get_articles_by_issue(self, obj, request, numbering, extra_context=None):
 548                 """Used to generate :meth:`~.FeedView.feed_patterns` for articles from a certain issue."""
 549                 try:
 550                         issue = self.get_issue_queryset(obj).get(numbering=numbering)
 551                 except NewsletterIssue.DoesNotExist:
 552                         raise Http404
 553                 context = extra_context or {}
 554                 context.update({'issue': issue})
 555                 return self.get_article_queryset(obj).filter(issues=issue), context
 556
 557         def article_view(self, request, slug, year=None, month=None, day=None, extra_context=None):
 558                 """Renders :attr:`article_page` with the article specified by the given parameters."""
 559                 articles = self.get_article_queryset(self.newsletter)
 560                 if year:
 561                         articles = articles.filter(date__year=year)
 562                 if month:
 563                         articles = articles.filter(date__month=month)
 564                 if day:
 565                         articles = articles.filter(date__day=day)
 566                 try:
 567                         article = articles.get(slug=slug)
 568                 except NewsletterArticle.DoesNotExist:
 569                         raise Http404
 570                 context = self.get_context()
 571                 context.update(extra_context or {})
 572                 context.update({'article': article})
 573                 return self.article_page.render_to_response(request, extra_context=context)
 574
 575         def issue_archive_view(self, request, extra_context):
 576                 """Renders :attr:`issue_archive_page` with the result of :meth:`get_issue_queryset` added to the context."""
 577                 if not self.issue_archive_page:
 578                         raise Http404
 579                 context = self.get_context()
 580                 context.update(extra_context or {})
 581                 context.update({
 582                         'issues': self.get_issue_queryset(self.newsletter)
 583                 })
 584                 return self.issue_archive_page.render_to_response(request, extra_context=context)
 585
 586         def title(self, obj):
 587                 return obj.title
 588
 589         def item_title(self, item):
 590                 return item.title
 591
 592         def item_description(self, item):
 593                 return item.full_text
 594
 595         def item_author_name(self, item):
 596                 authors = list(item.authors.all())
 597                 if len(authors) > 1:
 598                         return "%s and %s" % (", ".join([author.get_full_name() for author in authors[:-1]]), authors[-1].get_full_name())
 599                 elif authors:
 600                         return authors[0].get_full_name()
 601                 else:
 602                         return ''
 603
 604         def item_pubdate(self, item):
 605                 return item.date
 606
 607         def item_categories(self, item):
 608                 return [tag.name for tag in item.tags.all()]