from collections import namedtuple
from django.db import models
-from django.db.models import permalink, Q
+from django.db.models import permalink
import django.dispatch
-from django.core.cache import cache
-from django.core.files.storage import DefaultStorage
+from django.core.cache import get_cache
from django.utils.translation import ugettext_lazy as _
from django.contrib.auth.models import User
from django.template.loader import render_to_string
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
+from django.db.models.signals import post_save, pre_delete, post_delete
+import jsonfield
from django.conf import settings
from newtagging.models import TagBase, tags_updated
from newtagging import managers
-from catalogue.fields import JSONField, OverwritingFileField
-from catalogue.utils import create_zip, split_tags
-from catalogue.tasks import touch_tag, index_book
-from shutil import copy
-from glob import glob
+from catalogue.fields import OverwritingFileField
+from catalogue.utils import create_zip, split_tags, truncate_html_words
+from catalogue import tasks
import re
-from os import path
-import search
-
# Those are hard-coded here so that makemessages sees them.
TAG_CATEGORIES = (
('author', _('author')),
('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):
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=50, 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)
objects = Book.tagged.with_all((self,)).order_by()
if self.category != 'set':
# eliminate descendants
- l_tags = Tag.objects.filter(slug__in=[book.book_tag_slug() for book in objects])
- descendants_keys = [book.pk for book in Book.tagged.with_any(l_tags)]
+ l_tags = Tag.objects.filter(slug__in=[book.book_tag_slug() for book in objects.iterator()])
+ descendants_keys = [book.pk for book in Book.tagged.with_any(l_tags).iterator()]
if descendants_keys:
objects = objects.exclude(pk__in=descendants_keys)
return objects.count()
return lambda *args: get_dynamic_path(*args, ext=ext, maxlen=maxlen)
-def get_customized_pdf_path(book, customizations):
- """
- Returns a MEDIA_ROOT relative path for a customized pdf. The name will contain a hash of customization options.
- """
- customizations.sort()
- h = hash(tuple(customizations))
-
- pdf_name = '%s-custom-%s' % (book.slug, h)
- pdf_file = get_dynamic_path(None, pdf_name, ext='pdf')
-
- return pdf_file
-
-
-def get_existing_customized_pdf(book):
- """
- Returns a list of paths to generated customized pdf of a book
- """
- pdf_glob = '%s-custom-' % (book.slug,)
- pdf_glob = get_dynamic_path(None, pdf_glob, ext='pdf')
- pdf_glob = re.sub(r"[.]([a-z0-9]+)$", "*.\\1", pdf_glob)
- return glob(path.join(settings.MEDIA_ROOT, pdf_glob))
-
-
class BookMedia(models.Model):
+ """Represents media attached to a book."""
FileFormat = namedtuple("FileFormat", "name ext")
formats = SortedDict([
('mp3', FileFormat(name='MP3', ext='mp3')),
name = models.CharField(_('name'), max_length="100")
file = OverwritingFileField(_('file'), upload_to=book_upload_path())
uploaded_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False)
- extra_info = JSONField(_('extra information'), default='{}', editable=False)
+ extra_info = jsonfield.JSONField(_('extra information'), default='{}', editable=False)
book = models.ForeignKey('Book', related_name='media')
source_sha1 = models.CharField(null=True, blank=True, max_length=40, editable=False)
try:
old = BookMedia.objects.get(pk=self.pk)
- except BookMedia.DoesNotExist, e:
+ except BookMedia.DoesNotExist:
old = None
else:
# if name changed, change the file name, too
remove_zip("%s_%s" % (old.book.slug, old.type))
remove_zip("%s_%s" % (self.book.slug, self.type))
- extra_info = self.get_extra_info_value()
+ extra_info = self.extra_info
extra_info.update(self.read_meta())
- self.set_extra_info_value(extra_info)
+ self.extra_info = extra_info
self.source_sha1 = self.read_source_sha1(self.file.path, self.type)
return super(BookMedia, self).save(*args, **kwargs)
class Book(models.Model):
+ """Represents a book imported from WL-XML."""
title = models.CharField(_('title'), max_length=120)
sort_key = models.CharField(_('sort key'), max_length=120, db_index=True, editable=False)
slug = models.SlugField(_('slug'), max_length=120, db_index=True,
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)
parent_number = models.IntegerField(_('parent number'), default=0)
- extra_info = JSONField(_('extra information'), default='{}')
+ extra_info = jsonfield.JSONField(_('extra information'), default='{}')
gazeta_link = models.CharField(blank=True, max_length=240)
wiki_link = models.CharField(blank=True, max_length=240)
# files generated during publication
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)
book_tag.save()
return book_tag
- def has_media(self, type):
- if type in Book.formats:
- return bool(getattr(self, "%s_file" % type))
+ def has_media(self, type_):
+ if type_ in Book.formats:
+ return bool(getattr(self, "%s_file" % type_))
else:
- return self.media.filter(type=type).exists()
+ return self.media.filter(type=type_).exists()
- def get_media(self, type):
- if self.has_media(type):
- if type in Book.formats:
- return getattr(self, "%s_file" % type)
+ def get_media(self, type_):
+ if self.has_media(type_):
+ if type_ in Book.formats:
+ return getattr(self, "%s_file" % type_)
else:
- return self.media.filter(type=type)
+ return self.media.filter(type=type_)
else:
return None
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():
+ for fragm in self.fragments.all().iterator():
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')
cover.save(imgstr, 'png')
self.cover.save(None, ContentFile(imgstr.getvalue()))
- def build_pdf(self, customizations=None, file_name=None):
- """ (Re)builds the pdf file.
- customizations - customizations which are passed to LaTeX class file.
- file_name - save the pdf file under a different name and DO NOT save it in db.
- """
- from os import unlink
- from django.core.files import File
- from catalogue.utils import remove_zip
-
- pdf = self.wldocument().as_pdf(customizations=customizations)
-
- if file_name is None:
- # we'd like to be sure not to overwrite changes happening while
- # (timely) pdf generation is taking place (async celery scenario)
- current_self = Book.objects.get(id=self.id)
- current_self.pdf_file.save('%s.pdf' % self.slug,
- File(open(pdf.get_filename())))
- self.pdf_file = current_self.pdf_file
-
- # remove cached downloadables
- remove_zip(settings.ALL_PDF_ZIP)
-
- for customized_pdf in get_existing_customized_pdf(self):
- unlink(customized_pdf)
- else:
- print "saving %s" % file_name
- print "to: %s" % DefaultStorage().path(file_name)
- DefaultStorage().save(file_name, File(open(pdf.get_filename())))
-
- def build_mobi(self):
- """ (Re)builds the MOBI file.
-
- """
- from django.core.files import File
- from catalogue.utils import remove_zip
-
- mobi = self.wldocument().as_mobi()
-
- self.mobi_file.save('%s.mobi' % self.slug, File(open(mobi.get_filename())))
-
- # remove zip with all mobi files
- remove_zip(settings.ALL_MOBI_ZIP)
-
- def build_epub(self):
- """(Re)builds the epub file."""
- from django.core.files import File
- from catalogue.utils import remove_zip
-
- epub = self.wldocument().as_epub()
-
- self.epub_file.save('%s.epub' % self.slug,
- File(open(epub.get_filename())))
-
- # remove zip package with all epub files
- remove_zip(settings.ALL_EPUB_ZIP)
-
- def build_txt(self):
- from django.core.files.base import ContentFile
-
- text = self.wldocument().as_text()
- self.txt_file.save('%s.txt' % self.slug, ContentFile(text.get_string()))
-
-
def build_html(self):
- from markupstring import MarkupString
from django.core.files.base import ContentFile
from slughifi import slughifi
from librarian import html
continue
text = fragment.to_string()
- short_text = ''
- if (len(MarkupString(text)) > 240):
- short_text = unicode(MarkupString(text)[:160])
+ short_text = truncate_html_words(text, 15)
+ if text == short_text:
+ short_text = ''
new_fragment = Fragment.objects.create(anchor=fragment.id, book=self,
text=text, short_text=short_text)
return True
return False
+ # Thin wrappers for builder tasks
+ def build_pdf(self, *args, **kwargs):
+ """(Re)builds PDF."""
+ return tasks.build_pdf.delay(self.pk, *args, **kwargs)
+ def build_epub(self, *args, **kwargs):
+ """(Re)builds EPUB."""
+ return tasks.build_epub.delay(self.pk, *args, **kwargs)
+ def build_mobi(self, *args, **kwargs):
+ """(Re)builds MOBI."""
+ return tasks.build_mobi.delay(self.pk, *args, **kwargs)
+ def build_txt(self, *args, **kwargs):
+ """(Re)builds TXT."""
+ return tasks.build_txt.delay(self.pk, *args, **kwargs)
+
@staticmethod
def zip_format(format_):
def pretty_file_name(book):
return "%s/%s.%s" % (
- b.get_extra_info_value()['author'],
+ b.extra_info['author'],
b.slug,
format_)
field_name = "%s_file" % format_
books = Book.objects.filter(parent=None).exclude(**{field_name: ""})
paths = [(pretty_file_name(b), getattr(b, field_name).path)
- for b in books]
- result = create_zip.delay(paths,
+ for b in books.iterator()]
+ return create_zip(paths,
getattr(settings, "ALL_%s_ZIP" % format_.upper()))
- return result.wait()
def zip_audiobooks(self, format_):
bm = BookMedia.objects.filter(book=self, type=format_)
paths = map(lambda bm: (None, bm.file.path), bm)
- result = create_zip.delay(paths, "%s_%s" % (self.slug, format_))
- return result.wait()
+ return create_zip(paths, "%s_%s" % (self.slug, format_))
- def search_index(self, book_info=None):
- if settings.CELERY_ALWAYS_EAGER:
+ def search_index(self, book_info=None, reuse_index=False, index_tags=True):
+ import search
+ if reuse_index:
idx = search.ReusableIndex()
else:
idx = search.Index()
idx.open()
try:
idx.index_book(self, book_info)
- idx.index_tags()
+ if index_tags:
+ idx.index_tags()
finally:
idx.close()
@classmethod
def from_text_and_meta(cls, raw_file, book_info, overwrite=False,
build_epub=True, build_txt=True, build_pdf=True, build_mobi=True,
- search_index=True):
- import re
- from sortify import sortify
+ search_index=True, search_index_tags=True, search_index_reuse=False):
# check for parts before we do anything
children = []
for part_url in book_info.parts:
try:
children.append(Book.objects.get(slug=part_url.slug))
- except Book.DoesNotExist, e:
+ except Book.DoesNotExist:
raise Book.DoesNotExist(_('Book "%s" does not exist.') %
part_url.slug)
book.common_slug = book_info.variant_of.slug
else:
book.common_slug = book.slug
- book.set_extra_info_value(book_info.to_dict())
+ book.extra_info = book_info.to_dict()
book.save()
meta_tags = Tag.tags_from_info(book_info)
book.build_mobi()
if not settings.NO_SEARCH_INDEX and search_index:
- index_book.delay(book.id, book_info)
+ book.search_index(index_tags=search_index_tags, reuse_index=search_index_reuse)
+ #index_book.delay(book.id, book_info)
book_descendants = list(book.children.all())
descendants_tags = set()
descendants_tags.update(child_book.tags)
child_book.tags = list(child_book.tags) + [book_tag]
child_book.save()
- for fragment in child_book.fragments.all():
+ for fragment in child_book.fragments.all().iterator():
fragment.tags = set(list(fragment.tags) + [book_tag])
book_descendants += list(child_book.children.all())
for tag in descendants_tags:
- touch_tag.delay(tag)
+ tasks.touch_tag(tag)
book.save()
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.slug) for t in tags[category]]
+
+ for media_format in BookMedia.formats:
+ rel['media'][media_format] = self.has_media(media_format)
+
+ book = self
+ parents = []
+ while book.parent:
+ parents.append((book.parent.title, book.parent.slug))
+ book = book.parent
+ parents = parents[::-1]
+ if parents:
+ rel['parents'] = parents
+
+ if self.pk:
+ type(self).objects.filter(pk=self.pk).update(_related_info=rel)
+ return rel
+
+ def related_themes(self):
+ theme_counter = self.theme_counter
+ book_themes = list(Tag.objects.filter(pk__in=theme_counter.keys()))
+ for tag in book_themes:
+ tag.count = theme_counter[tag.pk]
+ return book_themes
+
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
if tags is None:
tags = {}
- for child in self.children.all().order_by():
+ for child in self.children.all().order_by().iterator():
for tag_pk, value in child.tag_counter.iteritems():
tags[tag_pk] = tags.get(tag_pk, 0) + value
- for tag in self.tags.exclude(category__in=('book', 'theme', 'set')).order_by():
+ for tag in self.tags.exclude(category__in=('book', 'theme', 'set')).order_by().iterator():
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
if tags is None:
tags = {}
- for fragment in Fragment.tagged.with_any([self.book_tag()]).order_by():
- for tag in fragment.tags.filter(category='theme').order_by():
+ for fragment in Fragment.tagged.with_any([self.book_tag()]).order_by().iterator():
+ for tag in fragment.tags.filter(category='theme').order_by().iterator():
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):
@classmethod
def tagged_top_level(cls, tags):
- """ Returns top-level books tagged with `tags'.
+ """ Returns top-level books tagged with `tags`.
It only returns those books which don't have ancestors which are
also tagged with those tags.
# get relevant books and their tags
objects = cls.tagged.with_all(tags)
# eliminate descendants
- l_tags = Tag.objects.filter(category='book', slug__in=[book.book_tag_slug() for book in objects])
- descendants_keys = [book.pk for book in cls.tagged.with_any(l_tags)]
+ l_tags = Tag.objects.filter(category='book',
+ slug__in=[book.book_tag_slug() for book in objects.iterator()])
+ descendants_keys = [book.pk for book in cls.tagged.with_any(l_tags).iterator()]
if descendants_keys:
objects = objects.exclude(pk__in=descendants_keys)
'title', 'parent', 'slug')
if filter:
books = books.filter(filter).distinct()
- book_ids = set((book.pk for book in books))
- for book in books:
+
+ book_ids = set(b['pk'] for b in books.values("pk").iterator())
+ for book in books.iterator():
parent = book.parent_id
if parent not in book_ids:
parent = None
books_by_parent.setdefault(parent, []).append(book)
else:
- for book in books:
+ for book in books.iterator():
books_by_parent.setdefault(book.parent_id, []).append(book)
orphans = []
books_by_author = SortedDict()
- for tag in Tag.objects.filter(category='author'):
+ for tag in Tag.objects.filter(category='author').iterator():
books_by_author[tag] = []
for book in books_by_parent.get(None,()):
"LP": (3, u"liceum"),
}
def audiences_pl(self):
- audiences = self.get_extra_info_value().get('audiences', [])
+ audiences = self.extra_info.get('audiences', [])
audiences = sorted(set([self._audiences_pl[a] for a in audiences]))
return [a[1] for a in audiences]
+ def choose_fragment(self):
+ tag = self.book_tag()
+ fragments = Fragment.tagged.with_any([tag])
+ if fragments.exists():
+ return fragments.order_by('?')[0]
+ elif self.parent:
+ return self.parent.choose_fragment()
+ else:
+ return None
+
def _has_factory(ftype):
has = lambda self: bool(getattr(self, "%s_file" % ftype))
- has.short_description = t.upper()
+ has.short_description = ftype.upper()
+ has.__doc__ = None
has.boolean = True
has.__name__ = "has_%s_file" % ftype
return has
class Fragment(models.Model):
+ """Represents a themed fragment of a book."""
text = models.TextField()
short_text = models.TextField(editable=False)
anchor = models.CharField(max_length=120)
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 get_short_text(self):
+ """Returns short version of the fragment."""
+ return self.short_text if self.short_text else self.text
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
# reset tag global counter
# we want Tag.changed_at updated for API to know the tag was touched
for tag in affected_tags:
- touch_tag.delay(tag)
+ tasks.touch_tag(tag)
# if book tags changed, reset book tag counter
if isinstance(sender, Book) and \
instance.book.save()
pre_delete.connect(_pre_delete_handler)
+
def _post_save_handler(sender, instance, **kwargs):
""" refresh all the short_html stuff on BookMedia update """
if sender == BookMedia:
instance.book.save()
post_save.connect(_post_save_handler)
+
+
+if not settings.NO_SEARCH_INDEX:
+ @django.dispatch.receiver(post_delete, sender=Book)
+ def _remove_book_from_index_handler(sender, instance, **kwargs):
+ """ remove the book from search index, when it is deleted."""
+ import search
+ search.JVM.attachCurrentThread()
+ idx = search.Index()
+ idx.open(timeout=10000) # 10 seconds timeout.
+ try:
+ idx.remove_book(instance)
+ idx.index_tags()
+ finally:
+ idx.close()
fnp / wolnelektury.git / blobdiff