X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/ea8925059c81175c3a432a006779764d65308ad8..0966a5718a1735d063c8f99471138c2b1924f2b7:/apps/catalogue/models.py?ds=sidebyside diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py index a7e04f1a2..568679b10 100644 --- a/apps/catalogue/models.py +++ b/apps/catalogue/models.py @@ -2,6 +2,8 @@ # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later. # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. # +from datetime import datetime + from django.db import models from django.db.models import permalink, Q from django.utils.translation import ugettext_lazy as _ @@ -11,14 +13,20 @@ 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 datetime import datetime +from django.db.models.signals import post_save, m2m_changed, pre_delete + +from django.conf import settings from newtagging.models import TagBase, tags_updated from newtagging import managers -from catalogue.fields import JSONField +from catalogue.fields import JSONField, OverwritingFileField +from catalogue.utils import ExistingFile -from librarian import html, dcparser +from librarian import dcparser, html, epub, NoDublinCore +import mutagen from mutagen import id3 +from slughifi import slughifi +from sortify import sortify TAG_CATEGORIES = ( @@ -31,6 +39,12 @@ TAG_CATEGORIES = ( ('book', _('book')), ) +MEDIA_FORMATS = ( + ('odt', _('ODT file')), + ('mp3', _('MP3 file')), + ('ogg', _('OGG file')), + ('daisy', _('DAISY file')), +) class TagSubcategoryManager(models.Manager): def __init__(self, subcategory): @@ -44,18 +58,23 @@ class TagSubcategoryManager(models.Manager): class Tag(TagBase): name = models.CharField(_('name'), max_length=50, db_index=True) slug = models.SlugField(_('slug'), max_length=120, db_index=True) - sort_key = models.SlugField(_('sort key'), 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) main_page = models.BooleanField(_('main page'), default=False, db_index=True, help_text=_('Show tag on main page')) user = models.ForeignKey(User, blank=True, null=True) - book_count = models.IntegerField(_('book count'), blank=False, null=True) - death = models.IntegerField(_(u'year of death'), blank=True, null=True) + book_count = models.IntegerField(_('book count'), blank=True, null=True) gazeta_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) + + class UrlDeprecationWarning(DeprecationWarning): + pass + categories_rev = { 'autor': 'author', 'epoka': 'epoch', @@ -87,17 +106,6 @@ class Tag(TagBase): has_description.short_description = _('description') has_description.boolean = True - def alive(self): - return self.death is None - - def in_pd(self): - """ tests whether an author is in public domain """ - return self.death is not None and self.goes_to_pd() <= datetime.now().year - - def goes_to_pd(self): - """ calculates the year of public domain entry for an author """ - return self.death + 71 if self.death is not None else None - def get_count(self): """ returns global book count for book tags, fragment count for themes """ @@ -125,19 +133,20 @@ class Tag(TagBase): real_tags = [] ambiguous_slugs = [] category = None + deprecated = False tags_splitted = tags.split('/') - for index, name in enumerate(tags_splitted): - if name in Tag.categories_rev: + 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: - if category: - real_tags.append(Tag.objects.get(slug=name, category=category)) - category = None - else: - try: - real_tags.append(Tag.objects.exclude(category='book').get(slug=name)) - except Tag.MultipleObjectsReturned, e: - ambiguous_slugs.append(name) + try: + real_tags.append(Tag.objects.exclude(category='book').get(slug=name)) + deprecated = True + except Tag.MultipleObjectsReturned, e: + ambiguous_slugs.append(name) if category: # something strange left off @@ -148,8 +157,11 @@ class Tag(TagBase): e.tags = real_tags e.ambiguous_slugs = ambiguous_slugs raise e - else: - return real_tags + if deprecated: + e = Tag.UrlDeprecationWarning() + e.tags = real_tags + raise e + return real_tags else: return TagBase.get_tag_list(tags) @@ -159,39 +171,133 @@ class Tag(TagBase): # TODO: why is this hard-coded ? -def book_upload_path(ext): - def get_dynamic_path(book, filename): - return 'lektura/%s.%s' % (book.slug, ext) +def book_upload_path(ext=None, maxlen=100): + def get_dynamic_path(media, filename, ext=ext): + # how to put related book's slug here? + if not ext: + if media.type == 'daisy': + ext = 'daisy.zip' + else: + ext = media.type + if not media.name: + name = slughifi(filename.split(".")[0]) + else: + name = slughifi(media.name) + return 'book/%s/%s.%s' % (ext, name[:maxlen-len('book/%s/.%s' % (ext, ext))-4], ext) return get_dynamic_path -class Book(models.Model): - title = models.CharField(_('title'), max_length=120) - 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=True) - _short_html = models.TextField(_('short HTML'), editable=False) - parent_number = models.IntegerField(_('parent number'), default=0) - extra_info = JSONField(_('extra information')) - gazeta_link = models.CharField(blank=True, max_length=240) - wiki_link = models.CharField(blank=True, max_length=240) +class BookMedia(models.Model): + type = models.CharField(_('type'), choices=MEDIA_FORMATS, max_length="100") + 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) + book = models.ForeignKey('Book', related_name='media') + source_sha1 = models.CharField(null=True, blank=True, max_length=40, editable=False) + + def __unicode__(self): + return "%s (%s)" % (self.name, self.file.name.split("/")[-1]) + + class Meta: + ordering = ('type', 'name') + verbose_name = _('book media') + verbose_name_plural = _('book media') + + def save(self, *args, **kwargs): + try: + old = BookMedia.objects.get(pk=self.pk) + except BookMedia.DoesNotExist, e: + pass + else: + # if name changed, change the file name, too + if slughifi(self.name) != slughifi(old.name): + self.file.save(None, ExistingFile(self.file.path), save=False, leave=True) + + super(BookMedia, self).save(*args, **kwargs) + extra_info = self.get_extra_info_value() + extra_info.update(self.read_meta()) + self.set_extra_info_value(extra_info) + self.source_sha1 = self.read_source_sha1(self.file.path, self.type) + return super(BookMedia, self).save(*args, **kwargs) + + def read_meta(self): + """ + Reads some metadata from the audiobook. + """ + + artist_name = director_name = project = funded_by = '' + if self.type == 'mp3': + try: + audio = id3.ID3(self.file.path) + artist_name = ', '.join(', '.join(tag.text) for tag in audio.getall('TPE1')) + director_name = ', '.join(', '.join(tag.text) for tag in audio.getall('TPE3')) + project = ", ".join([t.data for t in audio.getall('PRIV') + if t.owner=='wolnelektury.pl?project']) + funded_by = ", ".join([t.data for t in audio.getall('PRIV') + if t.owner=='wolnelektury.pl?funded_by']) + except: + pass + elif self.type == 'ogg': + try: + audio = mutagen.File(self.file.path) + artist_name = ', '.join(audio.get('artist', [])) + director_name = ', '.join(audio.get('conductor', [])) + project = ", ".join(audio.get('project', [])) + funded_by = ", ".join(audio.get('funded_by', [])) + except: + pass + else: + return {} + return {'artist_name': artist_name, 'director_name': director_name, + 'project': project, 'funded_by': funded_by} + @staticmethod + def read_source_sha1(filepath, filetype): + """ + Reads source file SHA1 from audiobok metadata. + """ - # Formats - 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) - odt_file = models.FileField(_('ODT file'), upload_to=book_upload_path('odt'), blank=True) - txt_file = models.FileField(_('TXT file'), upload_to=book_upload_path('txt'), blank=True) - mp3_file = models.FileField(_('MP3 file'), upload_to=book_upload_path('mp3'), blank=True) - ogg_file = models.FileField(_('OGG file'), upload_to=book_upload_path('ogg'), blank=True) + if filetype == 'mp3': + try: + audio = id3.ID3(filepath) + return [t.data for t in audio.getall('PRIV') + if t.owner=='wolnelektury.pl?flac_sha1'][0] + except: + return None + elif filetype == 'ogg': + try: + audio = mutagen.File(filepath) + return audio.get('flac_sha1', [None])[0] + except: + return None + else: + return None - parent = models.ForeignKey('self', blank=True, null=True, related_name='children') - objects = models.Manager() - tagged = managers.ModelTaggedItemManager(Tag) - tags = managers.TagDescriptor(Tag) +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) + 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) + wiki_link = models.CharField(blank=True, max_length=240) + # files generated during publication + 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) + + 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) @@ -200,14 +306,16 @@ class Book(models.Model): pass class Meta: - ordering = ('title',) + ordering = ('sort_key',) verbose_name = _('book') verbose_name_plural = _('books') def __unicode__(self): return self.title - def save(self, force_insert=False, force_update=False, reset_short_html=True, refresh_mp3=True): + def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs): + self.sort_key = sortify(self.title) + if reset_short_html: # Reset _short_html during save update = {} @@ -217,16 +325,7 @@ class Book(models.Model): # Fragment.short_html relies on book's tags, so reset it here too self.fragments.all().update(**update) - book = super(Book, self).save(force_insert, force_update) - - if refresh_mp3 and self.mp3_file: - print self.mp3_file, self.mp3_file.path - extra_info = self.get_extra_info_value() - extra_info.update(self.get_mp3_info()) - self.set_extra_info_value(extra_info) - book = super(Book, self).save(force_insert, force_update) - - return book + return super(Book, self).save(force_insert, force_update) @permalink def get_absolute_url(self): @@ -244,10 +343,68 @@ class Book(models.Model): book_tag, created = Tag.objects.get_or_create(slug=slug, category='book') if created: book_tag.name = self.title[:50] - book_tag.sort_key = slug + book_tag.sort_key = self.title.lower() book_tag.save() return book_tag + def has_media(self, type): + if type == 'xml': + if self.xml_file: + return True + else: + return False + elif type == 'html': + if self.html_file: + return True + else: + return False + elif type == 'txt': + if self.txt_file: + return True + else: + return False + elif type == 'pdf': + if self.pdf_file: + return True + else: + return False + elif type == 'epub': + if self.epub_file: + return True + else: + return False + else: + if self.media.filter(type=type).exists(): + return True + else: + return False + + def get_media(self, type): + if self.has_media(type): + if type == "xml": + return self.xml_file + elif type == "html": + return self.html_file + elif type == "epub": + return self.epub_file + elif type == "txt": + return self.txt_file + elif type == "pdf": + return self.pdf_file + else: + return self.media.filter(type=type) + else: + return None + + def get_mp3(self): + return self.get_media("mp3") + def get_odt(self): + return self.get_media("odt") + def get_ogg(self): + return self.get_media("ogg") + def get_daisy(self): + return self.get_media("daisy") + def short_html(self): key = '_short_html_%s' % get_language() short_html = getattr(self, key) @@ -259,20 +416,18 @@ class Book(models.Model): tags = [mark_safe(u'%s' % (tag.get_absolute_url(), tag.name)) for tag in tags] formats = [] - if self.html_file: + # files generated during publication + if self.has_media("html"): formats.append(u'%s' % (reverse('book_text', kwargs={'slug': self.slug}), _('Read online'))) - if self.pdf_file: - formats.append(u'PDF' % self.pdf_file.url) - if self.epub_file: - formats.append(u'EPUB' % self.epub_file.url) - if self.odt_file: - formats.append(u'ODT' % self.odt_file.url) - if self.txt_file: - formats.append(u'TXT' % self.txt_file.url) - if self.mp3_file: - formats.append(u'MP3' % self.mp3_file.url) - if self.ogg_file: - formats.append(u'OGG' % self.ogg_file.url) + if self.has_media("pdf"): + formats.append(u'PDF' % self.get_media('pdf').url) + if self.root_ancestor.has_media("epub"): + formats.append(u'EPUB' % self.root_ancestor.get_media('epub').url) + if self.has_media("txt"): + formats.append(u'TXT' % self.get_media('txt').url) + # other files + for m in self.media.order_by('type'): + formats.append(u'%s' % (m.file.url, m.type.upper())) formats = [mark_safe(format) for format in formats] @@ -282,18 +437,24 @@ class Book(models.Model): return mark_safe(getattr(self, key)) - def get_mp3_info(self): - """Retrieves artist and director names from audio ID3 tags.""" - audio = id3.ID3(self.mp3_file.path) - artist_name = ', '.join(', '.join(tag.text) for tag in audio.getall('TPE1')) - director_name = ', '.join(', '.join(tag.text) for tag in audio.getall('TPE3')) - return {'artist_name': artist_name, 'director_name': director_name} + @property + def root_ancestor(self): + """ returns the oldest ancestor """ + + if not hasattr(self, '_root_ancestor'): + book = self + while book.parent: + book = book.parent + self._root_ancestor = book + return self._root_ancestor + def has_description(self): return len(self.description) > 0 has_description.short_description = _('description') has_description.boolean = True + # ugly ugly ugly def has_pdf_file(self): return bool(self.pdf_file) has_pdf_file.short_description = 'PDF' @@ -304,18 +465,147 @@ class Book(models.Model): has_epub_file.short_description = 'EPUB' has_epub_file.boolean = True - def has_odt_file(self): - return bool(self.odt_file) - has_odt_file.short_description = 'ODT' - has_odt_file.boolean = True + def has_txt_file(self): + return bool(self.txt_file) + has_txt_file.short_description = 'HTML' + has_txt_file.boolean = True def has_html_file(self): return bool(self.html_file) has_html_file.short_description = 'HTML' has_html_file.boolean = True + def has_odt_file(self): + return bool(self.has_media("odt")) + has_odt_file.short_description = 'ODT' + has_odt_file.boolean = True + + def has_mp3_file(self): + return bool(self.has_media("mp3")) + has_mp3_file.short_description = 'MP3' + has_mp3_file.boolean = True + + def has_ogg_file(self): + 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 + + 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 + + epub_file = StringIO() + try: + epub.transform(BookImportDocProvider(self), self.slug, output_file=epub_file) + self.epub_file.save('%s.epub' % self.slug, ContentFile(epub_file.getvalue())) + FileRecord(slug=self.slug, type='epub', sha1=sha1(epub_file.getvalue()).hexdigest()).save() + except NoDublinCore: + pass + + book_descendants = list(self.children.all()) + while len(book_descendants) > 0: + child_book = book_descendants.pop(0) + if remove_descendants and child_book.has_epub_file(): + child_book.epub_file.delete() + # save anyway, to refresh short_html + child_book.save() + book_descendants += list(child_book.children.all()) + + def build_txt(self): + from StringIO import StringIO + from django.core.files.base import ContentFile + from librarian import text + + out = StringIO() + text.transform(open(self.xml_file.path), out) + self.txt_file.save('%s.txt' % self.slug, ContentFile(out.getvalue())) + + + def build_html(self): + from tempfile import NamedTemporaryFile + from markupstring import MarkupString + + meta_tags = list(self.tags.filter( + category__in=('author', 'epoch', 'genre', 'kind'))) + book_tag = self.book_tag() + + html_file = NamedTemporaryFile() + if html.transform(self.xml_file.path, html_file, parse_dublincore=False): + self.html_file.save('%s.html' % self.slug, File(html_file)) + + # get ancestor l-tags for adding to new fragments + ancestor_tags = [] + p = self.parent + while p: + ancestor_tags.append(p.book_tag()) + p = p.parent + + # Delete old fragments and create them from scratch + self.fragments.all().delete() + # Extract fragments + closed_fragments, open_fragments = html.extract_fragments(self.html_file.path) + for fragment in closed_fragments.values(): + try: + theme_names = [s.strip() for s in fragment.themes.split(',')] + except AttributeError: + continue + themes = [] + for theme_name in theme_names: + if not theme_name: + continue + tag, created = Tag.objects.get_or_create(slug=slughifi(theme_name), category='theme') + if created: + tag.name = theme_name + tag.sort_key = theme_name.lower() + tag.save() + themes.append(tag) + if not themes: + continue + + text = fragment.to_string() + short_text = '' + if (len(MarkupString(text)) > 240): + short_text = unicode(MarkupString(text)[:160]) + new_fragment = Fragment.objects.create(anchor=fragment.id, book=self, + text=text, short_text=short_text) + + new_fragment.save() + new_fragment.tags = set(meta_tags + themes + [book_tag] + ancestor_tags) + self.save() + return True + return False + + @classmethod - def from_xml_file(cls, xml_file, overwrite=False): + def from_xml_file(cls, xml_file, **kwargs): # use librarian to parse meta-data book_info = dcparser.parse(xml_file) @@ -323,18 +613,29 @@ class Book(models.Model): xml_file = File(open(xml_file)) try: - return cls.from_text_and_meta(xml_file, book_info, overwrite) + return cls.from_text_and_meta(xml_file, book_info, **kwargs) finally: xml_file.close() @classmethod - def from_text_and_meta(cls, raw_file, book_info, overwrite=False): - from tempfile import NamedTemporaryFile - from slughifi import slughifi - from markupstring import MarkupString + def from_text_and_meta(cls, raw_file, book_info, overwrite=False, build_epub=True, build_txt=True): + import re + + # check for parts before we do anything + children = [] + if hasattr(book_info, 'parts'): + for part_url in book_info.parts: + base, slug = part_url.rsplit('/', 1) + try: + children.append(Book.objects.get(slug=slug)) + except Book.DoesNotExist, e: + raise Book.DoesNotExist(_('Book with slug = "%s" does not exist.') % slug) + # Read book metadata book_base, book_slug = book_info.url.rsplit('/', 1) + if re.search(r'[^a-zA-Z0-9-]', book_slug): + raise ValueError('Invalid characters in slug') book, created = Book.objects.get_or_create(slug=book_slug) if created: @@ -350,7 +651,7 @@ class Book(models.Model): book._short_html = '' book.save() - book_tags = [] + meta_tags = [] categories = (('kinds', 'kind'), ('genres', 'genre'), ('authors', 'author'), ('epochs', 'epoch')) for field_name, category in categories: try: @@ -365,26 +666,35 @@ class Book(models.Model): tag, created = Tag.objects.get_or_create(slug=slughifi(tag_name), category=category) if created: tag.name = tag_name - tag.sort_key = slughifi(tag_sort_key) + tag.sort_key = sortify(tag_sort_key.lower()) tag.save() - book_tags.append(tag) + meta_tags.append(tag) - book.tags = book_tags + book_shelves + book.tags = set(meta_tags + book_shelves) book_tag = book.book_tag() - if hasattr(book_info, 'parts'): - for n, part_url in enumerate(book_info.parts): - base, slug = part_url.rsplit('/', 1) - try: - child_book = Book.objects.get(slug=slug) - child_book.parent = book - child_book.parent_number = n - child_book.save() - except Book.DoesNotExist, e: - raise Book.DoesNotExist(_('Book with slug = "%s" does not exist.') % slug) + for n, child_book in enumerate(children): + child_book.parent = book + child_book.parent_number = n + child_book.save() + + # Save XML and HTML files + book.xml_file.save('%s.xml' % book.slug, raw_file, save=False) + + # delete old fragments when overwriting + book.fragments.all().delete() + + if book.build_html(): + if not settings.NO_BUILD_TXT and build_txt: + book.build_txt() + + if not settings.NO_BUILD_EPUB and build_epub: + book.root_ancestor.build_epub() book_descendants = list(book.children.all()) + # add l-tag to descendants and their fragments + # delete unnecessary EPUB files while len(book_descendants) > 0: child_book = book_descendants.pop(0) child_book.tags = list(child_book.tags) + [book_tag] @@ -393,41 +703,9 @@ class Book(models.Model): fragment.tags = set(list(fragment.tags) + [book_tag]) book_descendants += list(child_book.children.all()) - # Save XML and HTML files - book.xml_file.save('%s.xml' % book.slug, raw_file, save=False) - - html_file = NamedTemporaryFile() - if html.transform(book.xml_file.path, html_file, parse_dublincore=False): - book.html_file.save('%s.html' % book.slug, File(html_file), save=False) - - # Extract fragments - closed_fragments, open_fragments = html.extract_fragments(book.html_file.path) - for fragment in closed_fragments.values(): - text = fragment.to_string() - short_text = '' - if (len(MarkupString(text)) > 240): - short_text = unicode(MarkupString(text)[:160]) - new_fragment, created = Fragment.objects.get_or_create(anchor=fragment.id, book=book, - defaults={'text': text, 'short_text': short_text}) - - try: - theme_names = [s.strip() for s in fragment.themes.split(',')] - except AttributeError: - continue - themes = [] - for theme_name in theme_names: - tag, created = Tag.objects.get_or_create(slug=slughifi(theme_name), category='theme') - if created: - tag.name = theme_name - tag.sort_key = slughifi(theme_name) - tag.save() - themes.append(tag) - new_fragment.save() - new_fragment.tags = set(book_tags + themes + [book_tag]) - # refresh cache - book.tag_counter - book.theme_counter + book.reset_tag_counter() + book.reset_theme_counter() book.save() return book @@ -441,12 +719,12 @@ class Book(models.Model): 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, refresh_mp3=False) + self.save(reset_short_html=False) return tags def reset_tag_counter(self): self._tag_counter = None - self.save(reset_short_html=False, refresh_mp3=False) + self.save(reset_short_html=False) if self.parent: self.parent.reset_tag_counter() @@ -462,12 +740,12 @@ class Book(models.Model): 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, refresh_mp3=False) + self.save(reset_short_html=False) return tags def reset_theme_counter(self): self._theme_counter = None - self.save(reset_short_html=False, refresh_mp3=False) + self.save(reset_short_html=False) if self.parent: self.parent.reset_theme_counter() @@ -477,6 +755,40 @@ class Book(models.Model): return self.refresh_theme_counter() return dict((int(k), v) for k, v in self.get__theme_counter_value().iteritems()) + def pretty_title(self, html_links=False): + book = self + names = list(book.tags.filter(category='author')) + + books = [] + while book: + books.append(book) + book = book.parent + names.extend(reversed(books)) + + if html_links: + names = ['%s' % (tag.get_absolute_url(), tag.name) for tag in names] + else: + names = [tag.name for tag in names] + + return ', '.join(names) + + @classmethod + def tagged_top_level(cls, 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)] + if descendants_keys: + objects = objects.exclude(pk__in=descendants_keys) + + return objects class Fragment(models.Model): @@ -510,37 +822,31 @@ class Fragment(models.Model): return mark_safe(getattr(self, key)) -class BookStub(models.Model): - title = models.CharField(_('title'), max_length=120) - author = models.CharField(_('author'), max_length=120) - pd = models.IntegerField(_('goes to public domain'), null=True, blank=True) - slug = models.SlugField(_('slug'), max_length=120, unique=True, db_index=True) - translator = models.TextField(_('translator'), blank=True) - translator_death = models.TextField(_('year of translator\'s death'), blank=True) +class FileRecord(models.Model): + slug = models.SlugField(_('slug'), max_length=120, db_index=True) + type = models.CharField(_('type'), max_length=20, db_index=True) + sha1 = models.CharField(_('sha-1 hash'), max_length=40) + time = models.DateTimeField(_('time'), auto_now_add=True) class Meta: - ordering = ('title',) - verbose_name = _('book stub') - verbose_name_plural = _('book stubs') + ordering = ('-time','-slug', '-type') + verbose_name = _('file record') + verbose_name_plural = _('file records') def __unicode__(self): - return self.title + return "%s %s.%s" % (self.sha1, self.slug, self.type) - @permalink - def get_absolute_url(self): - return ('catalogue.views.book_detail', [self.slug]) - - def in_pd(self): - return self.pd is not None and self.pd <= datetime.now().year - - @property - def name(self): - return self.title +########### +# +# SIGNALS +# +########### def _tags_updated_handler(sender, affected_tags, **kwargs): # reset tag global counter - Tag.objects.filter(pk__in=[tag.pk for tag in affected_tags]).update(book_count=None) + # we want Tag.changed_at updated for API to know the tag was touched + Tag.objects.filter(pk__in=[tag.pk for tag in affected_tags]).update(book_count=None, changed_at=datetime.now()) # if book tags changed, reset book tag counter if isinstance(sender, Book) and \ @@ -554,3 +860,15 @@ def _tags_updated_handler(sender, affected_tags, **kwargs): sender.book.reset_theme_counter() tags_updated.connect(_tags_updated_handler) + +def _pre_delete_handler(sender, instance, **kwargs): + """ refresh Book on BookMedia delete """ + if sender == BookMedia: + 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)