+++ /dev/null
-# -*- coding: utf-8 -*-
-# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
-# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
-#
-from django.conf import settings
-from django.core.cache import caches
-from django.contrib.auth.models import User
-from django.db import models
-from django.db.models import permalink
-from django.dispatch import Signal
-from django.utils.translation import ugettext_lazy as _
-from newtagging.models import TagBase
-from ssify import flush_ssi_includes
-
-
-# Those are hard-coded here so that makemessages sees them.
-TAG_CATEGORIES = (
- ('author', _('author')),
- ('epoch', _('epoch')),
- ('kind', _('kind')),
- ('genre', _('genre')),
- ('theme', _('theme')),
- ('set', _('set')),
- ('thing', _('thing')), # things shown on pictures
-)
-
-
-class Tag(TagBase):
- """A tag attachable to books and fragments (and possibly anything).
-
- Used to represent searchable metadata (authors, epochs, genres, kinds),
- fragment themes (motifs) and some book hierarchy related kludges."""
- name = models.CharField(_('name'), max_length=120, db_index=True)
- slug = models.SlugField(_('slug'), max_length=120, db_index=True)
- sort_key = models.CharField(_('sort key'), max_length=120, db_index=True)
- category = models.CharField(_('category'), max_length=50, blank=False, null=False,
- db_index=True, choices=TAG_CATEGORIES)
- description = models.TextField(_('description'), blank=True)
-
- user = models.ForeignKey(User, blank=True, null=True)
- gazeta_link = models.CharField(blank=True, max_length=240)
- culturepl_link = models.CharField(blank=True, max_length=240)
- wiki_link = models.CharField(blank=True, max_length=240)
-
- created_at = models.DateTimeField(_('creation date'), auto_now_add=True, db_index=True)
- changed_at = models.DateTimeField(_('creation date'), auto_now=True, db_index=True)
-
- after_change = Signal(providing_args=['instance', 'languages'])
-
- class UrlDeprecationWarning(DeprecationWarning):
- pass
-
- categories_rev = {
- 'autor': 'author',
- 'epoka': 'epoch',
- 'rodzaj': 'kind',
- 'gatunek': 'genre',
- 'motyw': 'theme',
- 'polka': 'set',
- 'obiekt': 'thing',
- }
- categories_dict = dict((item[::-1] for item in categories_rev.iteritems()))
-
- class Meta:
- ordering = ('sort_key',)
- verbose_name = _('tag')
- verbose_name_plural = _('tags')
- unique_together = (("slug", "category"),)
- app_label = 'catalogue'
-
- def save(self, *args, **kwargs):
- flush_cache = flush_all_includes = False
- if self.pk and self.category != 'set':
- # Flush the whole views cache.
- # Seem a little harsh, but changed tag names, descriptions
- # and links come up at any number of places.
- flush_cache = True
-
- # Find in which languages we need to flush related includes.
- old_self = type(self).objects.get(pk=self.pk)
- # Category shouldn't normally be changed, but just in case.
- if self.category != old_self.category:
- flush_all_includes = True
- languages_changed = self.languages_changed(old_self)
-
- ret = super(Tag, self).save(*args, **kwargs)
-
- if flush_cache:
- caches[settings.CACHE_MIDDLEWARE_ALIAS].clear()
- if flush_all_includes:
- flush_ssi_includes()
- else:
- self.flush_includes()
- self.after_change.send(sender=type(self), instance=self, languages=languages_changed)
-
- return ret
-
- def languages_changed(self, old):
- all_langs = [lc for (lc, _ln) in settings.LANGUAGES]
- if (old.category, old.slug) != (self.category, self.slug):
- return all_langs
- languages = set()
- for lang in all_langs:
- name_field = 'name_%s' % lang
- if getattr(old, name_field) != getattr(self, name_field):
- languages.add(lang)
- return languages
-
- def flush_includes(self, languages=True):
- if not languages:
- return
- if languages is True:
- languages = [lc for (lc, _ln) in settings.LANGUAGES]
- flush_ssi_includes([
- template % (self.pk, lang)
- for template in [
- '/api/include/tag/%d.%s.json',
- '/api/include/tag/%d.%s.xml',
- ]
- for lang in languages
- ])
- flush_ssi_includes([
- '/katalog/%s.json' % lang for lang in languages])
-
- def __unicode__(self):
- return self.name
-
- def __repr__(self):
- return "Tag(slug=%r)" % self.slug
-
- @permalink
- def get_absolute_url(self):
- return ('catalogue.views.tagged_object_list', [self.url_chunk])
-
- @classmethod
- @permalink
- def create_url(cls, category, slug):
- return ('catalogue.views.tagged_object_list', [
- '/'.join((cls.categories_dict[category], slug))
- ])
-
- def has_description(self):
- return len(self.description) > 0
- has_description.short_description = _('description')
- has_description.boolean = True
-
- @staticmethod
- def get_tag_list(tags):
- if isinstance(tags, basestring):
- real_tags = []
- ambiguous_slugs = []
- category = None
- deprecated = False
- tags_splitted = tags.split('/')
- for name in tags_splitted:
- if category:
- real_tags.append(Tag.objects.get(slug=name, category=category))
- category = None
- elif name in Tag.categories_rev:
- category = Tag.categories_rev[name]
- else:
- try:
- real_tags.append(Tag.objects.get(slug=name))
- deprecated = True
- except Tag.MultipleObjectsReturned, e:
- ambiguous_slugs.append(name)
-
- if category:
- # something strange left off
- raise Tag.DoesNotExist()
- if ambiguous_slugs:
- # some tags should be qualified
- e = Tag.MultipleObjectsReturned()
- e.tags = real_tags
- e.ambiguous_slugs = ambiguous_slugs
- raise e
- if deprecated:
- e = Tag.UrlDeprecationWarning()
- e.tags = real_tags
- raise e
- return real_tags
- else:
- return TagBase.get_tag_list(tags)
-
- @property
- def url_chunk(self):
- return '/'.join((Tag.categories_dict[self.category], self.slug))
-
- @staticmethod
- def tags_from_info(info):
- from fnpdjango.utils.text.slughifi import slughifi
- from sortify import sortify
- meta_tags = []
- categories = (('kinds', 'kind'), ('genres', 'genre'), ('authors', 'author'), ('epochs', 'epoch'))
- for field_name, category in categories:
- try:
- tag_names = getattr(info, field_name)
- except:
- try:
- tag_names = [getattr(info, category)]
- except:
- # For instance, Pictures do not have 'genre' field.
- continue
- for tag_name in tag_names:
- lang = getattr(tag_name, 'lang', settings.LANGUAGE_CODE)
- tag_sort_key = tag_name
- if category == 'author':
- tag_sort_key = tag_name.last_name
- tag_name = tag_name.readable()
- if lang == settings.LANGUAGE_CODE:
- # Allow creating new tag, if it's in default language.
- tag, created = Tag.objects.get_or_create(slug=slughifi(tag_name), category=category)
- if created:
- tag_name = unicode(tag_name)
- tag.name = tag_name
- setattr(tag, "name_%s" % lang, tag_name)
- tag.sort_key = sortify(tag_sort_key.lower())
- tag.save()
-
- meta_tags.append(tag)
- else:
- # Ignore unknown tags in non-default languages.
- try:
- tag = Tag.objects.get(category=category, **{"name_%s" % lang: tag_name})
- except Tag.DoesNotExist:
- pass
- else:
- meta_tags.append(tag)
- return meta_tags
-
-
-# Pickle complains about not having this.
-TagRelation = Tag.intermediary_table_model
fnp / wolnelektury.git / blobdiff