l10n

[wolnelektury.git] / apps / catalogue / models.py

diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
index bf724fd..c5ca5df 100644 (file)
--- a/apps/catalogue/models.py
+++ b/apps/catalogue/models.py
@@ -6,6 +6,7 @@ from datetime import datetime
 
 from django.db import models
 from django.db.models import permalink, Q
 
 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.cache import cache
 from django.utils.translation import ugettext_lazy as _
 from django.contrib.auth.models import User


@@ -21,14 +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 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

 
 from librarian import dcparser, html, epub, NoDublinCore
 import mutagen
 from mutagen import id3
 from slughifi import slughifi
 from sortify import sortify
 
 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')),
 
 TAG_CATEGORIES = (
     ('author', _('author')),


@@ -47,6 +48,10 @@ MEDIA_FORMATS = (
     ('daisy', _('DAISY file')), 
 )
 
     ('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__()
 class TagSubcategoryManager(models.Manager):
     def __init__(self, subcategory):
         super(TagSubcategoryManager, self).__init__()


@@ -278,7 +283,7 @@ class BookMedia(models.Model):
 
 class Book(models.Model):
     title         = models.CharField(_('title'), max_length=120)
 
 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)
     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)


@@ -291,14 +296,16 @@ 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)
     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)
 
     parent        = models.ForeignKey('self', blank=True, null=True, related_name='children')
     objects  = models.Manager()
     tagged   = managers.ModelTaggedItemManager(Tag)
     tags     = managers.TagDescriptor(Tag)
 

+    html_built = django.dispatch.Signal()
+

     class AlreadyExists(Exception):
         pass
 
     class AlreadyExists(Exception):
         pass
 


@@ -313,10 +320,12 @@ class Book(models.Model):
     def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs):
         self.sort_key = sortify(self.title)
 
     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:
             self.reset_short_html()
 
         if reset_short_html:
             self.reset_short_html()
 

-        return super(Book, self).save(force_insert, force_update)
+        return ret

 
     @permalink
     def get_absolute_url(self):
 
     @permalink
     def get_absolute_url(self):


@@ -397,6 +406,9 @@ class Book(models.Model):
         return self.get_media("daisy")                       
 
     def reset_short_html(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))
         cache_key = "Book.short_html/%d/%s"
         for lang, langname in settings.LANGUAGES:
             cache.delete(cache_key % (self.id, lang))


@@ -405,14 +417,15 @@ class Book(models.Model):
             fragm.reset_short_html()
 
     def short_html(self):
             fragm.reset_short_html()
 
     def short_html(self):

-        cache_key = "Book.short_html/%d/%s" % (self.id, get_language())
-        short_html = cache.get(cache_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 is not None:
 
         if short_html is not None:

-            print 'b.s from cache'

             return mark_safe(short_html)
         else:
             return mark_safe(short_html)
         else:

-            print 'b.s manual'

             tags = self.tags.filter(~Q(category__in=('set', 'theme', 'book')))
             tags = [mark_safe(u'<a href="%s">%s</a>' % (tag.get_absolute_url(), tag.name)) for tag in tags]
 
             tags = self.tags.filter(~Q(category__in=('set', 'theme', 'book')))
             tags = [mark_safe(u'<a href="%s">%s</a>' % (tag.get_absolute_url(), tag.name)) for tag in tags]
 


@@ -434,7 +447,9 @@ class Book(models.Model):
 
             short_html = unicode(render_to_string('catalogue/book_short.html',
                 {'book': self, 'tags': tags, 'formats': formats}))
 
             short_html = unicode(render_to_string('catalogue/book_short.html',
                 {'book': self, 'tags': tags, 'formats': formats}))

-            cache.set(cache_key, short_html)
+
+            if self.id:
+                cache.set(cache_key, short_html, CACHE_FOREVER)

             return mark_safe(short_html)
 
     @property
             return mark_safe(short_html)
 
     @property


@@ -489,34 +504,42 @@ class Book(models.Model):
         return bool(self.has_media("ogg"))
     has_ogg_file.short_description = 'OGG'
     has_ogg_file.boolean = True
         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'
     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
+
+        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.
         """
     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 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
 
         if self.parent:
             # don't need an epub


@@ -600,6 +623,7 @@ class Book(models.Model):
                 new_fragment.save()
                 new_fragment.tags = set(meta_tags + themes + [book_tag] + ancestor_tags)
             self.save()
                 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
 
             return True
         return False
 


@@ -618,7 +642,7 @@ class Book(models.Model):
             xml_file.close()
 
     @classmethod
             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
         import re
 
         # check for parts before we do anything


@@ -691,6 +715,9 @@ class Book(models.Model):
         if not settings.NO_BUILD_EPUB and build_epub:
             book.root_ancestor.build_epub()
 
         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
         book_descendants = list(book.children.all())
         # add l-tag to descendants and their fragments
         # delete unnecessary EPUB files


@@ -702,14 +729,18 @@ class Book(models.Model):
                 fragment.tags = set(list(fragment.tags) + [book_tag])
             book_descendants += list(child_book.children.all())
 
                 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()
 
         # refresh cache
         book.reset_tag_counter()
         book.reset_theme_counter()
 

-        book.save()

         return book
 
     def reset_tag_counter(self):
         return book
 
     def reset_tag_counter(self):

+        if self.id is None:
+            return
+

         cache_key = "Book.tag_counter/%d" % self.id
         cache.delete(cache_key)
         if self.parent:
         cache_key = "Book.tag_counter/%d" % self.id
         cache.delete(cache_key)
         if self.parent:


@@ -717,11 +748,13 @@ class Book(models.Model):
 
     @property
     def tag_counter(self):
 
     @property
     def tag_counter(self):

-        cache_key = "Book.tag_counter/%d" % self.id
-        tags = cache.get(cache_key)
-        print 'tag'
+        if self.id:
+            cache_key = "Book.tag_counter/%d" % self.id
+            tags = cache.get(cache_key)
+        else:
+            tags = None
+

         if tags is None:
         if tags is None:

-            print 'tag manual'

             tags = {}
             for child in self.children.all().order_by():
                 for tag_pk, value in child.tag_counter.iteritems():
             tags = {}
             for child in self.children.all().order_by():
                 for tag_pk, value in child.tag_counter.iteritems():


@@ -729,10 +762,14 @@ class Book(models.Model):
             for tag in self.tags.exclude(category__in=('book', 'theme', 'set')).order_by():
                 tags[tag.pk] = 1
 
             for tag in self.tags.exclude(category__in=('book', 'theme', 'set')).order_by():
                 tags[tag.pk] = 1
 

-            cache.set(cache_key, tags)
+            if self.id:
+                cache.set(cache_key, tags, CACHE_FOREVER)

         return tags
 
     def reset_theme_counter(self):
         return tags
 
     def reset_theme_counter(self):

+        if self.id is None:
+            return
+

         cache_key = "Book.theme_counter/%d" % self.id
         cache.delete(cache_key)
         if self.parent:
         cache_key = "Book.theme_counter/%d" % self.id
         cache.delete(cache_key)
         if self.parent:


@@ -740,17 +777,20 @@ class Book(models.Model):
 
     @property
     def theme_counter(self):
 
     @property
     def theme_counter(self):

-        cache_key = "Book.theme_counter/%d" % self.id
-        tags = cache.get(cache_key)
-        print 'theme'
+        if self.id:
+            cache_key = "Book.theme_counter/%d" % self.id
+            tags = cache.get(cache_key)
+        else:
+            tags = None
+

         if tags is None:
         if tags is None:

-            print 'theme manual'

             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
 
             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
 

-            cache.set(cache_key, tags)
+            if self.id:
+                cache.set(cache_key, tags, CACHE_FOREVER)

         return tags
 
     def pretty_title(self, html_links=False):
         return tags
 
     def pretty_title(self, html_links=False):


@@ -808,22 +848,27 @@ class Fragment(models.Model):
         return '%s#m%s' % (reverse('book_text', kwargs={'slug': self.book.slug}), self.anchor)
 
     def reset_short_html(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):
         cache_key = "Fragment.short_html/%d/%s"
         for lang, langname in settings.LANGUAGES:
             cache.delete(cache_key % (self.id, lang))
 
     def short_html(self):

-        cache_key = "Fragment.short_html/%d/%s" % (self.id, get_language())
-        short_html = cache.get(cache_key)
+        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:
 
         if short_html is not None:

-            print 'f.s from cache'

             return mark_safe(short_html)
         else:
             return mark_safe(short_html)
         else:

-            print 'f.s manual'

             short_html = unicode(render_to_string('catalogue/fragment_short.html',
                 {'fragment': self}))
             short_html = unicode(render_to_string('catalogue/fragment_short.html',
                 {'fragment': self}))

-            cache.set(cache_key, short_html)
+            if self.id:
+                cache.set(cache_key, short_html, CACHE_FOREVER)

             return mark_safe(short_html)
 
 
             return mark_safe(short_html)