filter by tags

[wolnelektury.git] / src / picture / models.py

diff --git a/src/picture/models.py b/src/picture/models.py
index 020d3f5..8f913c3 100644 (file)
--- a/src/picture/models.py
+++ b/src/picture/models.py
@@ -12,6 +12,8 @@ from django.core.files.storage import FileSystemStorage
 from django.utils.datastructures import SortedDict
 from fnpdjango.utils.text.slughifi import slughifi
 from ssify import flush_ssi_includes
+
+from catalogue.models.tag import prefetched_relations
 from picture import tasks
 from StringIO import StringIO
 import jsonfield
@@ -79,9 +81,9 @@ class Picture(models.Model):
         _('sort key by author'), max_length=120, db_index=True, editable=False, default=u'')
     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)
-    xml_file = models.FileField('xml_file', upload_to="xml", storage=picture_storage)
-    image_file = ImageField(_('image_file'), upload_to="images", storage=picture_storage)
-    html_file = models.FileField('html_file', upload_to="html", storage=picture_storage)
+    xml_file = models.FileField(_('xml file'), upload_to="xml", storage=picture_storage)
+    image_file = ImageField(_('image file'), upload_to="images", storage=picture_storage)
+    html_file = models.FileField(_('html file'), upload_to="html", storage=picture_storage)
     areas_json = jsonfield.JSONField(_('picture areas JSON'), default={}, editable=False)
     extra_info = jsonfield.JSONField(_('extra information'), default={})
     culturepl_link = models.CharField(blank=True, max_length=240)
@@ -101,7 +103,7 @@ class Picture(models.Model):
         pass
 
     class Meta:
-        ordering = ('sort_key',)
+        ordering = ('sort_key_author', 'sort_key')
 
         verbose_name = _('picture')
         verbose_name_plural = _('pictures')
@@ -112,8 +114,8 @@ class Picture(models.Model):
         self.sort_key = sortify(self.title)[:120]
 
         try:
-            author = self.tags.filter(category='author')[0].sort_key
-        except IndexError:
+            author = self.authors().first().sort_key
+        except AttributeError:
             author = u''
         self.sort_key_author = author
 
@@ -124,8 +126,18 @@ class Picture(models.Model):
     def __unicode__(self):
         return self.title
 
-    def author_str(self):
-        return ", ".join(str(t) for t in self.tags.filter(category='author'))
+    def authors(self):
+        return self.tags.filter(category='author')
+
+    def tag_unicode(self, category):
+        relations = prefetched_relations(self, category)
+        if relations:
+            return ', '.join(rel.tag.name for rel in relations)
+        else:
+            return ', '.join(self.tags.filter(category=category).values_list('name', flat=True))
+
+    def author_unicode(self):
+        return self.tag_unicode('author')
 
     @permalink
     def get_absolute_url(self):
@@ -186,8 +198,6 @@ class Picture(models.Model):
             picture.extra_info = picture_xml.picture_info.to_dict()
 
             picture_tags = set(catalogue.models.Tag.tags_from_info(picture_xml.picture_info))
-            motif_tags = set()
-            thing_tags = set()
 
             area_data = {'themes': {}, 'things': {}}
 
@@ -201,7 +211,10 @@ class Picture(models.Model):
                 if part.get('object', None) is not None:
                     _tags = set()
                     for objname in part['object'].split(','):
-                        objname = objname.strip().capitalize()
+                        objname = objname.strip()
+                        assert objname, 'Empty object name'
+                        # str.capitalize() is wrong, because it also lowers letters
+                        objname = objname[0].upper() + objname[1:]
                         tag, created = catalogue.models.Tag.objects.get_or_create(
                             slug=slughifi(objname), category='thing')
                         if created:
@@ -241,7 +254,7 @@ class Picture(models.Model):
                     area.save()
                     area.tags = _tags.union(picture_tags)
 
-            picture.tags = picture_tags.union(motif_tags).union(thing_tags)
+            picture.tags = picture_tags
             picture.areas_json = area_data
 
             if image_file is not None:
@@ -313,7 +326,7 @@ class Picture(models.Model):
             pics_by_author[tag] = []
 
         for pic in pics.iterator():
-            authors = list(pic.tags.filter(category='author'))
+            authors = list(pic.authors().only('pk'))
             if authors:
                 for author in authors:
                     pics_by_author[author].append(pic)
@@ -332,9 +345,7 @@ class Picture(models.Model):
         return self._info
 
     def pretty_title(self, html_links=False):
-        picture = self
-        names = [(tag.name, tag.get_absolute_url())
-                 for tag in self.tags.filter(category='author')]
+        names = [(tag.name, tag.get_absolute_url()) for tag in self.authors().only('name', 'category', 'slug')]
         names.append((self.title, self.get_absolute_url()))
 
         if html_links: