X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/e78ad9088340bcceb6634334ce0941f571a67440..35ccafef8a83575ac0bf5901b58630033aa95d1e:/apps/catalogue/models.py diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py index 568679b10..e4d359500 100644 --- a/apps/catalogue/models.py +++ b/apps/catalogue/models.py @@ -6,6 +6,8 @@ from datetime import datetime from django.db import models from django.db.models import permalink, Q +import django.dispatch +from django.core.cache import cache from django.utils.translation import ugettext_lazy as _ from django.contrib.auth.models import User from django.core.files import File @@ -20,14 +22,14 @@ 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 ExistingFile +from catalogue.utils import ExistingFile, BookImportDocProvider, create_zip_task, remove_zip from librarian import dcparser, html, epub, NoDublinCore import mutagen from mutagen import id3 from slughifi import slughifi from sortify import sortify - +from os import unlink TAG_CATEGORIES = ( ('author', _('author')), @@ -46,6 +48,10 @@ MEDIA_FORMATS = ( ('daisy', _('DAISY file')), ) +# not quite, but Django wants you to set a timeout +CACHE_FOREVER = 2419200 # 28 days + + class TagSubcategoryManager(models.Manager): def __init__(self, subcategory): super(TagSubcategoryManager, self).__init__() @@ -214,6 +220,9 @@ class BookMedia(models.Model): if slughifi(self.name) != slughifi(old.name): self.file.save(None, ExistingFile(self.file.path), save=False, leave=True) + # remove the zip package for book with modified media + remove_zip(self.book.slug) + super(BookMedia, self).save(*args, **kwargs) extra_info = self.get_extra_info_value() extra_info.update(self.read_meta()) @@ -277,12 +286,11 @@ class BookMedia(models.Model): class Book(models.Model): title = models.CharField(_('title'), max_length=120) - sort_key = models.CharField(_('sort_key'), max_length=120, db_index=True, editable=False) + sort_key = models.CharField(_('sort key'), max_length=120, db_index=True, editable=False) slug = models.SlugField(_('slug'), max_length=120, unique=True, db_index=True) description = models.TextField(_('description'), blank=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) - _short_html = models.TextField(_('short HTML'), editable=False) parent_number = models.IntegerField(_('parent number'), default=0) extra_info = JSONField(_('extra information'), default='{}') gazeta_link = models.CharField(blank=True, max_length=240) @@ -291,16 +299,15 @@ class Book(models.Model): xml_file = models.FileField(_('XML file'), upload_to=book_upload_path('xml'), blank=True) html_file = models.FileField(_('HTML file'), upload_to=book_upload_path('html'), blank=True) pdf_file = models.FileField(_('PDF file'), upload_to=book_upload_path('pdf'), blank=True) - epub_file = models.FileField(_('EPUB file'), upload_to=book_upload_path('epub'), blank=True) - txt_file = models.FileField(_('TXT file'), upload_to=book_upload_path('txt'), blank=True) - + epub_file = models.FileField(_('EPUB file'), upload_to=book_upload_path('epub'), blank=True) + txt_file = models.FileField(_('TXT file'), upload_to=book_upload_path('txt'), blank=True) + parent = models.ForeignKey('self', blank=True, null=True, related_name='children') objects = models.Manager() tagged = managers.ModelTaggedItemManager(Tag) tags = managers.TagDescriptor(Tag) - _tag_counter = JSONField(null=True, editable=False) - _theme_counter = JSONField(null=True, editable=False) + html_built = django.dispatch.Signal() class AlreadyExists(Exception): pass @@ -316,16 +323,12 @@ class Book(models.Model): def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs): self.sort_key = sortify(self.title) + ret = super(Book, self).save(force_insert, force_update) + if reset_short_html: - # Reset _short_html during save - update = {} - for key in filter(lambda x: x.startswith('_short_html'), self.__dict__): - update[key] = '' - self.__setattr__(key, '') - # Fragment.short_html relies on book's tags, so reset it here too - self.fragments.all().update(**update) + self.reset_short_html() - return super(Book, self).save(force_insert, force_update) + return ret @permalink def get_absolute_url(self): @@ -405,11 +408,25 @@ class Book(models.Model): def get_daisy(self): return self.get_media("daisy") + def reset_short_html(self): + 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)) + # 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): - key = '_short_html_%s' % get_language() - short_html = getattr(self, key) + 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 and len(short_html): + if short_html is not None: return mark_safe(short_html) else: tags = self.tags.filter(~Q(category__in=('set', 'theme', 'book'))) @@ -431,11 +448,12 @@ class Book(models.Model): formats = [mark_safe(format) for format in formats] - setattr(self, key, unicode(render_to_string('catalogue/book_short.html', - {'book': self, 'tags': tags, 'formats': formats}))) - self.save(reset_short_html=False) - return mark_safe(getattr(self, key)) + 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) @property def root_ancestor(self): @@ -489,39 +507,51 @@ class Book(models.Model): return bool(self.has_media("ogg")) has_ogg_file.short_description = 'OGG' has_ogg_file.boolean = True - + def has_daisy_file(self): return bool(self.has_media("daisy")) has_daisy_file.short_description = 'DAISY' - has_daisy_file.boolean = True - + has_daisy_file.boolean = True + + def build_pdf(self): + """ (Re)builds the pdf file. + + """ + from librarian import pdf + from tempfile import NamedTemporaryFile + import os + + # remove zip with all pdf files + remove_zip(settings.ALL_PDF_ZIP) + + path, fname = os.path.realpath(self.xml_file.path).rsplit('/', 1) + try: + pdf_file = NamedTemporaryFile(delete=False) + pdf.transform(BookImportDocProvider(self), + file_path=str(self.xml_file.path), + output_file=pdf_file, + ) + + self.pdf_file.save('%s.pdf' % self.slug, File(open(pdf_file.name))) + finally: + unlink(pdf_file.name) + def build_epub(self, remove_descendants=True): """ (Re)builds the epub file. If book has a parent, does nothing. Unless remove_descendants is False, descendants' epubs are removed. """ - from StringIO import StringIO from hashlib import sha1 from django.core.files.base import ContentFile - from librarian import DocProvider - - class BookImportDocProvider(DocProvider): - """ used for joined EPUBs """ - - def __init__(self, book): - self.book = book - - def by_slug(self, slug): - if slug == self.book.slug: - return self.book.xml_file - else: - return Book.objects.get(slug=slug).xml_file if self.parent: # don't need an epub return + # remove zip package with all epub files + remove_zip(settings.ALL_EPUB_ZIP) + epub_file = StringIO() try: epub.transform(BookImportDocProvider(self), self.slug, output_file=epub_file) @@ -600,9 +630,46 @@ class Book(models.Model): new_fragment.save() new_fragment.tags = set(meta_tags + themes + [book_tag] + ancestor_tags) self.save() + self.html_built.send(sender=self) return True return False + @staticmethod + def zip_epub(): + books = Book.objects.all() + + paths = filter(lambda x: x is not None, + map(lambda b: b.epub_file and b.epub_file.path or None, books)) + if settings.USE_CELERY: + result = create_zip_task.delay(paths, settings.ALL_EPUB_ZIP) + return result.wait() + else: + result = create_zip_task(paths, settings.ALL_EPUB_ZIP) + return result + + @staticmethod + def zip_pdf(): + books = Book.objects.all() + + paths = filter(lambda x: x is not None, + map(lambda b: b.pdf_file and b.pdf_file.path or None, books)) + if settings.USE_CELERY: + result = create_zip_task.delay(paths, settings.ALL_PDF_ZIP) + return result.wait() + else: + result = create_zip_task(paths, settings.ALL_PDF_ZIP) + return result + + def zip_audiobooks(self): + bm = BookMedia.objects.filter(book=self) + paths = map(lambda bm: bm.file.path, bm) + if settings.USE_CELERY: + result = create_zip_task.delay(paths, self.slug) + return result.wait() + else: + result = create_zip_task(paths, self.slug) + return result + @classmethod def from_xml_file(cls, xml_file, **kwargs): @@ -618,7 +685,7 @@ class Book(models.Model): xml_file.close() @classmethod - def from_text_and_meta(cls, raw_file, book_info, overwrite=False, build_epub=True, build_txt=True): + def from_text_and_meta(cls, raw_file, book_info, overwrite=False, build_epub=True, build_txt=True, build_pdf=True): import re # check for parts before we do anything @@ -648,7 +715,6 @@ class Book(models.Model): book.title = book_info.title book.set_extra_info_value(book_info.to_dict()) - book._short_html = '' book.save() meta_tags = [] @@ -692,6 +758,9 @@ class Book(models.Model): if not settings.NO_BUILD_EPUB and build_epub: book.root_ancestor.build_epub() + if not settings.NO_BUILD_PDF and build_pdf: + book.root_ancestor.build_pdf() + book_descendants = list(book.children.all()) # add l-tag to descendants and their fragments # delete unnecessary EPUB files @@ -703,57 +772,69 @@ class Book(models.Model): fragment.tags = set(list(fragment.tags) + [book_tag]) book_descendants += list(child_book.children.all()) + book.save() + # refresh cache book.reset_tag_counter() book.reset_theme_counter() - book.save() return book - - def refresh_tag_counter(self): - tags = {} - for child in self.children.all().order_by(): - 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(): - tags[tag.pk] = 1 - self.set__tag_counter_value(tags) - self.save(reset_short_html=False) - return tags - def reset_tag_counter(self): - self._tag_counter = None - self.save(reset_short_html=False) + if self.id is None: + return + + cache_key = "Book.tag_counter/%d" % self.id + cache.delete(cache_key) if self.parent: self.parent.reset_tag_counter() @property def tag_counter(self): - if self._tag_counter is None: - return self.refresh_tag_counter() - return dict((int(k), v) for k, v in self.get__tag_counter_value().iteritems()) - - def refresh_theme_counter(self): - tags = {} - for fragment in Fragment.tagged.with_any([self.book_tag()]).order_by(): - for tag in fragment.tags.filter(category='theme').order_by(): - tags[tag.pk] = tags.get(tag.pk, 0) + 1 - self.set__theme_counter_value(tags) - self.save(reset_short_html=False) + if self.id: + cache_key = "Book.tag_counter/%d" % self.id + tags = cache.get(cache_key) + else: + tags = None + + if tags is None: + tags = {} + for child in self.children.all().order_by(): + 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(): + tags[tag.pk] = 1 + + if self.id: + cache.set(cache_key, tags, CACHE_FOREVER) return tags def reset_theme_counter(self): - self._theme_counter = None - self.save(reset_short_html=False) + if self.id is None: + return + + cache_key = "Book.theme_counter/%d" % self.id + cache.delete(cache_key) if self.parent: self.parent.reset_theme_counter() @property def theme_counter(self): - if self._theme_counter is None: - return self.refresh_theme_counter() - return dict((int(k), v) for k, v in self.get__theme_counter_value().iteritems()) + if self.id: + cache_key = "Book.theme_counter/%d" % self.id + tags = 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(): + tags[tag.pk] = tags.get(tag.pk, 0) + 1 + + if self.id: + cache.set(cache_key, tags, CACHE_FOREVER) + return tags def pretty_title(self, html_links=False): book = self @@ -794,7 +875,6 @@ class Book(models.Model): class Fragment(models.Model): text = models.TextField() short_text = models.TextField(editable=False) - _short_html = models.TextField(editable=False) anchor = models.CharField(max_length=120) book = models.ForeignKey(Book, related_name='fragments') @@ -810,16 +890,29 @@ class Fragment(models.Model): def get_absolute_url(self): return '%s#m%s' % (reverse('book_text', kwargs={'slug': self.book.slug}), self.anchor) + def reset_short_html(self): + if self.id is None: + return + + cache_key = "Fragment.short_html/%d/%s" + for lang, langname in settings.LANGUAGES: + cache.delete(cache_key % (self.id, lang)) + def short_html(self): - key = '_short_html_%s' % get_language() - short_html = getattr(self, key) - if short_html and len(short_html): + if self.id: + cache_key = "Fragment.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: - setattr(self, key, unicode(render_to_string('catalogue/fragment_short.html', - {'fragment': self}))) - self.save() - return mark_safe(getattr(self, key)) + short_html = unicode(render_to_string('catalogue/fragment_short.html', + {'fragment': self})) + if self.id: + cache.set(cache_key, short_html, CACHE_FOREVER) + return mark_safe(short_html) class FileRecord(models.Model):