fixed lessons migration

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

diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
index baf00a1..f2be7d1 100644 (file)
--- a/apps/catalogue/models.py
+++ b/apps/catalogue/models.py
@@ -8,10 +8,10 @@ from django.utils.translation import ugettext_lazy as _
 from django.contrib.auth.models import User
 from django.core.files import File
 from django.template.loader import render_to_string
 from django.contrib.auth.models import User
 from django.core.files import File
 from django.template.loader import render_to_string

-from django.template.defaultfilters import slugify

 from django.utils.safestring import mark_safe
 from django.utils.translation import get_language
 from django.core.urlresolvers import reverse
 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.conf import settings
 
 
 from django.conf import settings
 


@@ -21,6 +21,7 @@ from catalogue.fields import JSONField
 
 from librarian import dcparser, html, epub, NoDublinCore
 from mutagen import id3
 
 from librarian import dcparser, html, epub, NoDublinCore
 from mutagen import id3

+from slughifi import slughifi

 
 
 TAG_CATEGORIES = (
 
 
 TAG_CATEGORIES = (


@@ -59,7 +60,7 @@ class Tag(TagBase):
     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)
     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)
+    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)
 
     gazeta_link = models.CharField(blank=True, max_length=240)
     wiki_link = models.CharField(blank=True, max_length=240)
 


@@ -155,26 +156,37 @@ class Tag(TagBase):
 
 
 # TODO: why is this hard-coded ?
 
 
 # TODO: why is this hard-coded ?

-def book_upload_path(ext=None):
+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:
     def get_dynamic_path(media, filename, ext=ext):
         # how to put related book's slug here?
         if not ext:

-            ext = media.type
+            if media.type == 'daisy':
+                ext = 'daisy.zip'
+            else:
+                ext = media.type

         if not media.name:
         if not media.name:

-            name = slugify(filename.split(".")[0])
+            name = slughifi(filename.split(".")[0])

         else:
         else:

-            name = slugify(media.name)
-        return 'lektura/%s.%s' % (name, ext)
+            name = slughifi(media.name)
+        return 'lektura/%s.%s' % (name[:maxlen-len('lektura/.%s' % ext)-4], ext)

     return get_dynamic_path
 
 
 class BookMedia(models.Model):
     type        = models.CharField(_('type'), choices=MEDIA_FORMATS, max_length="100")
     return get_dynamic_path
 
 
 class BookMedia(models.Model):
     type        = models.CharField(_('type'), choices=MEDIA_FORMATS, max_length="100")

-    name        = models.CharField(_('name'), max_length="100", blank=True)
-    file        = models.FileField(_('file'), upload_to=book_upload_path(), blank=True)
+    name        = models.CharField(_('name'), max_length="100")
+    file        = models.FileField(_('file'), upload_to=book_upload_path())

     uploaded_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False)
     extra_info  = JSONField(_('extra information'), default='{}')
 
     uploaded_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False)
     extra_info  = JSONField(_('extra information'), default='{}')
 

+    def book_count(self):
+        return self.book_set.count()
+    book_count.short_description = _('book count')
+
+    def books(self):
+        return mark_safe('<br/>'.join("<a href='%s'>%s</a>" % (reverse('admin:catalogue_book_change', args=[b.id]), b.title) for b in self.book_set.all()))
+    books.short_description = _('books')
+

     def __unicode__(self):
         return "%s (%s)" % (self.name, self.file.name.split("/")[-1])
 
     def __unicode__(self):
         return "%s (%s)" % (self.name, self.file.name.split("/")[-1])
 


@@ -183,14 +195,14 @@ class BookMedia(models.Model):
         verbose_name        = _('book media')
         verbose_name_plural = _('book media')
 
         verbose_name        = _('book media')
         verbose_name_plural = _('book media')
 

-    def save(self, force_insert=False, force_update=False):
-        media = super(BookMedia, self).save(force_insert, force_update)
+    def save(self, force_insert=False, force_update=False, **kwargs):
+        media = super(BookMedia, self).save(force_insert, force_update, **kwargs)

         if self.type == 'mp3':
             file = self.file
             extra_info = self.get_extra_info_value()
             extra_info.update(self.get_mp3_info())
             self.set_extra_info_value(extra_info)
         if self.type == 'mp3':
             file = self.file
             extra_info = self.get_extra_info_value()
             extra_info.update(self.get_mp3_info())
             self.set_extra_info_value(extra_info)

-            media = super(BookMedia, self).save(force_insert, force_update)
+            media = super(BookMedia, self).save(force_insert, force_update, **kwargs)

         return media
 
     def get_mp3_info(self):
         return media
 
     def get_mp3_info(self):


@@ -313,7 +325,7 @@ class Book(models.Model):
             elif type == "html":
                 return self.html_file
             elif type == "epub":
             elif type == "html":
                 return self.html_file
             elif type == "epub":

-                return self.html_file                
+                return self.epub_file

             elif type == "txt":
                 return self.txt_file
             elif type == "pdf":
             elif type == "txt":
                 return self.txt_file
             elif type == "pdf":


@@ -452,8 +464,7 @@ class Book(models.Model):
         epub_file = StringIO()
         try:
             epub.transform(BookImportDocProvider(self), self.slug, output_file=epub_file)
         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()), save=False)
-            self.save()
+            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
             FileRecord(slug=self.slug, type='epub', sha1=sha1(epub_file.getvalue()).hexdigest()).save()
         except NoDublinCore:
             pass


@@ -467,9 +478,19 @@ class Book(models.Model):
             child_book.save()
             book_descendants += list(child_book.children.all())
 
             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()))
+        self.save()
+

 
     @classmethod
 
     @classmethod

-    def from_xml_file(cls, xml_file, overwrite=False, build_epub=True):
+    def from_xml_file(cls, xml_file, **kwargs):

         # use librarian to parse meta-data
         book_info = dcparser.parse(xml_file)
 
         # use librarian to parse meta-data
         book_info = dcparser.parse(xml_file)
 


@@ -477,14 +498,14 @@ class Book(models.Model):
             xml_file = File(open(xml_file))
 
         try:
             xml_file = File(open(xml_file))
 
         try:

-            return cls.from_text_and_meta(xml_file, book_info, overwrite, build_epub=build_epub)
+            return cls.from_text_and_meta(xml_file, book_info, **kwargs)

         finally:
             xml_file.close()
 
     @classmethod
         finally:
             xml_file.close()
 
     @classmethod

-    def from_text_and_meta(cls, raw_file, book_info, overwrite=False, build_epub=True):
+    def from_text_and_meta(cls, raw_file, book_info, overwrite=False, build_epub=True, build_txt=True):
+        import re

         from tempfile import NamedTemporaryFile
         from tempfile import NamedTemporaryFile

-        from slughifi import slughifi

         from markupstring import MarkupString
         from django.core.files.storage import default_storage
 
         from markupstring import MarkupString
         from django.core.files.storage import default_storage
 


@@ -501,6 +522,8 @@ class Book(models.Model):
 
         # Read book metadata
         book_base, book_slug = book_info.url.rsplit('/', 1)
 
         # 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:
         book, created = Book.objects.get_or_create(slug=book_slug)
 
         if created:


@@ -591,6 +614,9 @@ class Book(models.Model):
                 new_fragment.save()
                 new_fragment.tags = set(book_tags + themes + [book_tag] + ancestor_tags)
 
                 new_fragment.save()
                 new_fragment.tags = set(book_tags + themes + [book_tag] + ancestor_tags)
 

+        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()
 
         if not settings.NO_BUILD_EPUB and build_epub:
             book.root_ancestor.build_epub()
 


@@ -720,6 +746,12 @@ class FileRecord(models.Model):
     def __unicode__(self):
         return "%s %s.%s" % (self.sha1,  self.slug, self.type)
 
     def __unicode__(self):
         return "%s %s.%s" % (self.sha1,  self.slug, self.type)
 

+###########
+#
+# SIGNALS
+#
+###########
+

 
 def _tags_updated_handler(sender, affected_tags, **kwargs):
     # reset tag global counter
 
 def _tags_updated_handler(sender, affected_tags, **kwargs):
     # reset tag global counter


@@ -737,3 +769,24 @@ def _tags_updated_handler(sender, affected_tags, **kwargs):
         sender.book.reset_theme_counter()
 tags_updated.connect(_tags_updated_handler)
 
         sender.book.reset_theme_counter()
 tags_updated.connect(_tags_updated_handler)
 

+
+def _m2m_changed_handler(sender, instance, action, reverse, pk_set, **kwargs):
+    """ refresh all the short_html stuff on BookMedia delete """
+    if sender == Book.medias.through and reverse and action == 'pre_clear':
+        for book in instance.book_set.all():
+            book.save()
+m2m_changed.connect(_m2m_changed_handler)
+
+def _pre_delete_handler(sender, instance, **kwargs):
+    """ explicitly clear m2m, so that Books can be refreshed """
+    if sender == BookMedia:
+        instance.book_set.clear()
+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:
+        for book in instance.book_set.all():
+            book.save()
+post_save.connect(_post_save_handler)
+