from django.db import models
from django.db.models import permalink, Q
import django.dispatch
-from django.core.cache import cache
+from django.core.cache import get_cache
from django.core.files.storage import DefaultStorage
from django.utils.translation import ugettext_lazy as _
from django.contrib.auth.models import User
from django.utils.translation import get_language
from django.core.urlresolvers import reverse
from django.db.models.signals import post_save, m2m_changed, pre_delete
+import jsonfield
from django.conf import settings
import re
from os import path
-
import search
# Those are hard-coded here so that makemessages sees them.
('book', _('book')),
)
-# not quite, but Django wants you to set a timeout
-CACHE_FOREVER = 2419200 # 28 days
+
+permanent_cache = get_cache('permanent')
class TagSubcategoryManager(models.Manager):
formats = ebook_formats + ['html', 'xml']
parent = models.ForeignKey('self', blank=True, null=True, related_name='children')
+
+ _related_info = jsonfield.JSONField(blank=True, null=True, editable=False)
+
objects = models.Manager()
tagged = managers.ModelTaggedItemManager(Tag)
tags = managers.TagDescriptor(Tag)
if self.id is None:
return
- cache_key = "Book.short_html/%d/%s"
- for lang, langname in settings.LANGUAGES:
- cache.delete(cache_key % (self.id, lang))
- cache.delete("Book.mini_box/%d" % (self.id, ))
+ type(self).objects.filter(pk=self.pk).update(_related_info=None)
# Fragment.short_html relies on book's tags, so reset it here too
for fragm in self.fragments.all():
fragm.reset_short_html()
- def short_html(self):
- if self.id:
- cache_key = "Book.short_html/%d/%s" % (self.id, get_language())
- short_html = cache.get(cache_key)
- else:
- short_html = None
-
- if short_html is not None:
- return mark_safe(short_html)
- else:
- tags = self.tags.filter(category__in=('author', 'kind', 'genre', 'epoch'))
- tags = split_tags(tags)
-
- formats = {}
- # files generated during publication
- for ebook_format in self.ebook_formats:
- if self.has_media(ebook_format):
- formats[ebook_format] = self.get_media(ebook_format)
-
-
- short_html = unicode(render_to_string('catalogue/book_short.html',
- {'book': self, 'tags': tags, 'formats': formats}))
-
- if self.id:
- cache.set(cache_key, short_html, CACHE_FOREVER)
- return mark_safe(short_html)
-
- def mini_box(self):
- if self.id:
- cache_key = "Book.mini_box/%d" % (self.id, )
- short_html = cache.get(cache_key)
- else:
- short_html = None
-
- if short_html is None:
- authors = self.tags.filter(category='author')
-
- short_html = unicode(render_to_string('catalogue/book_mini_box.html',
- {'book': self, 'authors': authors, 'STATIC_URL': settings.STATIC_URL}))
-
- if self.id:
- cache.set(cache_key, short_html, CACHE_FOREVER)
- return mark_safe(short_html)
-
def has_description(self):
return len(self.description) > 0
has_description.short_description = _('description')
cls.published.send(sender=book)
return book
+ def related_info(self):
+ """Keeps info about related objects (tags, media) in cache field."""
+ if self._related_info is not None:
+ return self._related_info
+ else:
+ rel = {'tags': {}, 'media': {}}
+ tags = self.tags.filter(category__in=(
+ 'author', 'kind', 'genre', 'epoch'))
+ tags = split_tags(tags)
+ for category in tags:
+ rel['tags'][category] = [
+ (t.name, t.get_absolute_url()) for t in tags[category]]
+ for media_format in BookMedia.formats:
+ rel['media'][media_format] = self.has_media(media_format)
+ if self.pk:
+ type(self).objects.filter(pk=self.pk).update(_related_info=rel)
+ return rel
+
def reset_tag_counter(self):
if self.id is None:
return
cache_key = "Book.tag_counter/%d" % self.id
- cache.delete(cache_key)
+ permanent_cache.delete(cache_key)
if self.parent:
self.parent.reset_tag_counter()
def tag_counter(self):
if self.id:
cache_key = "Book.tag_counter/%d" % self.id
- tags = cache.get(cache_key)
+ tags = permanent_cache.get(cache_key)
else:
tags = None
tags[tag.pk] = 1
if self.id:
- cache.set(cache_key, tags, CACHE_FOREVER)
+ permanent_cache.set(cache_key, tags)
return tags
def reset_theme_counter(self):
return
cache_key = "Book.theme_counter/%d" % self.id
- cache.delete(cache_key)
+ permanent_cache.delete(cache_key)
if self.parent:
self.parent.reset_theme_counter()
def theme_counter(self):
if self.id:
cache_key = "Book.theme_counter/%d" % self.id
- tags = cache.get(cache_key)
+ tags = permanent_cache.get(cache_key)
else:
tags = None
tags[tag.pk] = tags.get(tag.pk, 0) + 1
if self.id:
- cache.set(cache_key, tags, CACHE_FOREVER)
+ permanent_cache.set(cache_key, tags)
return tags
def pretty_title(self, html_links=False):
cache_key = "Fragment.short_html/%d/%s"
for lang, langname in settings.LANGUAGES:
- cache.delete(cache_key % (self.id, lang))
+ permanent_cache.delete(cache_key % (self.id, lang))
def short_html(self):
if self.id:
cache_key = "Fragment.short_html/%d/%s" % (self.id, get_language())
- short_html = cache.get(cache_key)
+ short_html = permanent_cache.get(cache_key)
else:
short_html = None
short_html = unicode(render_to_string('catalogue/fragment_short.html',
{'fragment': self}))
if self.id:
- cache.set(cache_key, short_html, CACHE_FOREVER)
+ permanent_cache.set(cache_key, short_html)
return mark_safe(short_html)
+class Collection(models.Model):
+ """A collection of books, which might be defined before publishing them."""
+ title = models.CharField(_('title'), max_length=120, db_index=True)
+ slug = models.SlugField(_('slug'), max_length=120, primary_key=True)
+ description = models.TextField(_('description'), null=True, blank=True)
+
+ models.SlugField(_('slug'), max_length=120, unique=True, db_index=True)
+ book_slugs = models.TextField(_('book slugs'))
+
+ class Meta:
+ ordering = ('title',)
+ verbose_name = _('collection')
+ verbose_name_plural = _('collections')
+
+ def __unicode__(self):
+ return self.title
+
+
###########
#
# SIGNALS
fnp / wolnelektury.git / blobdiff