+++ /dev/null
-# -*- coding: utf-8 -*-
-#
-# This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
-# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
-#
-from django.conf import settings
-from django.contrib.sites.models import Site
-from django.db import models
-from django.template.loader import render_to_string
-from django.utils.translation import ugettext_lazy as _
-from catalogue.helpers import cached_in_field
-from catalogue.models import Project
-from catalogue.tasks import refresh_instance
-from dvcs import models as dvcs_models
-
-
-class Image(dvcs_models.Document):
- """ An editable chunk of text. Every Book text is divided into chunks. """
- REPO_PATH = settings.CATALOGUE_IMAGE_REPO_PATH
-
- image = models.FileField(_('image'), upload_to='catalogue/images')
- title = models.CharField(_('title'), max_length=255, blank=True)
- slug = models.SlugField(_('slug'), unique=True)
- public = models.BooleanField(_('public'), default=True, db_index=True)
- project = models.ForeignKey(Project, null=True, blank=True)
-
- # cache
- _short_html = models.TextField(null=True, blank=True, editable=False)
- _new_publishable = models.NullBooleanField(editable=False)
- _published = models.NullBooleanField(editable=False)
- _changed = models.NullBooleanField(editable=False)
-
- class Meta:
- app_label = 'catalogue'
- ordering = ['title']
- verbose_name = _('image')
- verbose_name_plural = _('images')
- permissions = [('can_pubmark_image', 'Can mark images for publishing')]
-
- # Representing
- # ============
-
- def __unicode__(self):
- return self.title
-
- @models.permalink
- def get_absolute_url(self):
- return ("catalogue_image", [self.slug])
-
- def correct_about(self):
- return ["http://%s%s" % (
- Site.objects.get_current().domain,
- self.get_absolute_url()
- ),
- "http://%s%s" % (
- 'obrazy.redakcja.wolnelektury.pl',
- self.get_absolute_url()
- )]
-
- # State & cache
- # =============
-
- def last_published(self):
- try:
- return self.publish_log.all()[0].timestamp
- except IndexError:
- return None
-
- def assert_publishable(self):
- from librarian.picture import WLPicture
- from librarian import NoDublinCore, ParseError, ValidationError
-
- class SelfImageStore(object):
- def path(self_, slug, mime_type):
- """Returns own file object. Ignores slug ad mime_type."""
- return open(self.image.path)
-
- publishable = self.publishable()
- assert publishable, _("There is no publishable revision")
- picture_xml = publishable.materialize()
-
- try:
- picture = WLPicture.from_string(picture_xml.encode('utf-8'),
- image_store=SelfImageStore)
- except ParseError, e:
- raise AssertionError(_('Invalid XML') + ': ' + str(e))
- except NoDublinCore:
- raise AssertionError(_('No Dublin Core found.'))
- except ValidationError, e:
- raise AssertionError(_('Invalid Dublin Core') + ': ' + str(e))
-
- valid_about = self.correct_about()
- assert picture.picture_info.about in valid_about, \
- _("rdf:about is not") + " " + valid_about[0]
-
- def publishable_error(self):
- try:
- return self.assert_publishable()
- except AssertionError, e:
- return e
- else:
- return None
-
- def accessible(self, request):
- return self.public or request.user.is_authenticated()
-
- def is_new_publishable(self):
- change = self.publishable()
- if not change:
- return False
- return not change.publish_log.exists()
- new_publishable = cached_in_field('_new_publishable')(is_new_publishable)
-
- def is_published(self):
- return self.publish_log.exists()
- published = cached_in_field('_published')(is_published)
-
- def is_changed(self):
- if self.head is None:
- return False
- return not self.head.publishable
- changed = cached_in_field('_changed')(is_changed)
-
- @cached_in_field('_short_html')
- def short_html(self):
- return render_to_string(
- 'catalogue/image_short.html', {'image': self})
-
- def refresh(self):
- """This should be done offline."""
- self.short_html
- self.single
- self.new_publishable
- self.published
-
- def touch(self):
- update = {
- "_changed": self.is_changed(),
- "_short_html": None,
- "_new_publishable": self.is_new_publishable(),
- "_published": self.is_published(),
- }
- Image.objects.filter(pk=self.pk).update(**update)
- refresh_instance(self)
-
- def refresh(self):
- """This should be done offline."""
- self.changed
- self.short_html
-
-
- # Publishing
- # ==========
-
- def publish(self, user):
- """Publishes the picture on behalf of a (local) user."""
- from base64 import b64encode
- import apiclient
- from catalogue.signals import post_publish
-
- self.assert_publishable()
- change = self.publishable()
- picture_xml = change.materialize()
- picture_data = open(self.image.path).read()
- apiclient.api_call(user, "pictures/", {
- "picture_xml": picture_xml,
- "picture_image_data": b64encode(picture_data),
- })
- # record the publish
- log = self.publish_log.create(user=user, change=change)
- post_publish.send(sender=log)
fnp / redakcja.git / blobdiff