Made short text fragment text shorter.

[wolnelektury.git] / catalogue / models.py

diff --git a/catalogue/models.py b/catalogue/models.py
index 5e5dddf..c82cf43 100644 (file)
--- a/catalogue/models.py
+++ b/catalogue/models.py
@@ -1,9 +1,11 @@
 # -*- coding: utf-8 -*-
 from django.db import models
-from django.db.models import permalink
+from django.db.models import permalink, Q
 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.utils.safestring import mark_safe
 
 from newtagging.models import TagBase
 from newtagging import managers
@@ -42,7 +44,7 @@ class Tag(TagBase):
     
     def has_description(self):
         return len(self.description) > 0
-    has_description.short_description = _('Has description')
+    has_description.short_description = _('description')
     has_description.boolean = True
 
     @permalink
@@ -71,6 +73,7 @@ class Book(models.Model):
     slug = models.SlugField(_('slug'), 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)
     
     # Formats
     xml_file = models.FileField(_('XML file'), upload_to='books/xml', blank=True)
@@ -81,9 +84,29 @@ class Book(models.Model):
     objects = managers.ModelTaggedItemManager(Tag)
     tags = managers.TagDescriptor(Tag)
     
+    def short_html(self):
+        if len(self._short_html):
+            return mark_safe(self._short_html)
+        else:
+            tags = self.tags.filter(~Q(category__in=('set', 'theme')))
+            tags = [u'<a href="%s">%s</a>' % (tag.get_absolute_url(), tag.name) for tag in tags]
+
+            formats = []
+            if self.html_file:
+                formats.append(u'<a href="%s">Czytaj online</a>' % self.html_file.url)
+            if self.pdf_file:
+                formats.append(u'<a href="%s">Plik PDF</a>' % self.pdf_file.url)
+            if self.odt_file:
+                formats.append(u'<a href="%s">Plik ODT</a>' % self.odt_file.url)
+            
+            self._short_html = render_to_string('catalogue/book_short.html',
+                {'book': self, 'tags': tags, 'formats': formats})
+            self.save()
+            return mark_safe(self._short_html)
+    
     def has_description(self):
         return len(self.description) > 0
-    has_description.short_description = _('Has description')
+    has_description.short_description = _('description')
     has_description.boolean = True
     
     def has_pdf_file(self):
@@ -106,7 +129,10 @@ class Book(models.Model):
         from tempfile import NamedTemporaryFile
         from slughifi import slughifi
         import dcparser
+        from markupstring import MarkupString
+        import re
         
+        # Read book metadata
         book_info = dcparser.parse(xml_file)
         book = Book(title=book_info.title, slug=slughifi(book_info.title))
         book.save()
@@ -124,12 +150,36 @@ class Book(models.Model):
             book_tags.append(tag)
         book.tags = book_tags
         
+        # Save XML and HTML files
         book.xml_file.save('%s.xml' % book.slug, File(file(xml_file)), save=False)
         
         html_file = NamedTemporaryFile()
         html.transform(book.xml_file.path, html_file)
         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)
+        book_themes = []
+        for fragment in closed_fragments.values():
+            text = fragment.to_string()
+            short_text = ''
+            if (len(re.sub(r'</?.*?>', '', text)) > 240):
+                short_text = MarkupString(text)[:160]
+            new_fragment = Fragment(text=text, short_text=short_text, anchor=fragment.id, book=book)
+                
+            theme_names = [s.strip() for s in fragment.themes.split(',')]
+            themes = []
+            for theme_name in theme_names:
+                tag, created = Tag.objects.get_or_create(name=theme_name,
+                    slug=slughifi(theme_name), sort_key=slughifi(theme_name), category='theme')
+                tag.save()
+                themes.append(tag)
+            new_fragment.save()
+            new_fragment.tags = list(book.tags) + themes
+            book_themes += themes
+        
+        book_themes = set(book_themes)
+        book.tags = list(book.tags) + list(book_themes)
         return book.save()
     
     @permalink
@@ -147,15 +197,28 @@ class Book(models.Model):
 
 class Fragment(models.Model):
     text = models.TextField()
-    short_text = models.TextField()
+    short_text = models.TextField(editable=False)
+    _short_html = models.TextField(editable=False)
     anchor = models.IntegerField()
-    book = models.ForeignKey(Book)
-    
+    book = models.ForeignKey(Book, related_name='fragments')
+
     objects = managers.ModelTaggedItemManager(Tag)
     tags = managers.TagDescriptor(Tag)
     
+    def short_html(self):
+        if len(self._short_html):
+            return mark_safe(self._short_html)
+        else:
+            book_authors = [u'<a href="%s">%s</a>' % (tag.get_absolute_url(), tag.name) 
+                for tag in self.book.tags if tag.category == 'author']
+            
+            self._short_html = render_to_string('catalogue/fragment_short.html',
+                {'fragment': self, 'book': self.book, 'book_authors': book_authors})
+            self.save()
+            return mark_safe(self._short_html)
+        
     class Meta:
         ordering = ('book', 'anchor',)
         verbose_name = _('fragment')
-        verbose_name_plural = _('fragment')
+        verbose_name_plural = _('fragments')