X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/f230a3850ec568f2281f085a076a6185d8c82b5c..4e3a77b2fd049d08ecc1d156356750dc5881fe76:/apps/catalogue/models.py diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py index fbae111ea..1f6210d20 100644 --- a/apps/catalogue/models.py +++ b/apps/catalogue/models.py @@ -7,7 +7,7 @@ from collections import namedtuple 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 @@ -17,6 +17,7 @@ from django.utils.safestring import mark_safe 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 @@ -30,7 +31,6 @@ from glob import glob import re from os import path - import search # Those are hard-coded here so that makemessages sees them. @@ -44,8 +44,8 @@ TAG_CATEGORIES = ( ('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): @@ -372,6 +372,9 @@ class Book(models.Model): 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) @@ -450,58 +453,11 @@ class Book(models.Model): 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') @@ -818,12 +774,30 @@ class Book(models.Model): 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() @@ -831,7 +805,7 @@ class Book(models.Model): 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 @@ -844,7 +818,7 @@ class Book(models.Model): 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): @@ -852,7 +826,7 @@ class Book(models.Model): 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() @@ -860,7 +834,7 @@ class Book(models.Model): 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 @@ -871,7 +845,7 @@ class Book(models.Model): 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): @@ -1003,12 +977,12 @@ class Fragment(models.Model): 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 @@ -1018,10 +992,28 @@ class Fragment(models.Model): 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