Add og:image on image page

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

diff --git a/apps/picture/models.py b/apps/picture/models.py
index 2703c80..705025a 100644 (file)
--- a/apps/picture/models.py
+++ b/apps/picture/models.py
@@ -16,17 +16,18 @@ from StringIO import StringIO
 import jsonfield
 import itertools
 import logging
 import jsonfield
 import itertools
 import logging

-logging.basicConfig(level=logging.DEBUG)

 from sorl.thumbnail import get_thumbnail, default
 from .engine import CustomCroppingEngine
 
 from PIL import Image
 
 from sorl.thumbnail import get_thumbnail, default
 from .engine import CustomCroppingEngine
 
 from PIL import Image
 

-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import get_language, ugettext_lazy as _

 from newtagging import managers
 from os import path
 
 
 from newtagging import managers
 from os import path
 
 

+permanent_cache = get_cache('permanent')
+

 picture_storage = FileSystemStorage(location=path.join(
         settings.MEDIA_ROOT, 'pictures'),
         base_url=settings.MEDIA_URL + "pictures/")
 picture_storage = FileSystemStorage(location=path.join(
         settings.MEDIA_ROOT, 'pictures'),
         base_url=settings.MEDIA_URL + "pictures/")


@@ -52,10 +53,35 @@ class PictureArea(models.Model):
         pa.area = coords
         return pa
 
         pa.area = coords
         return pa
 

+    def reset_short_html(self):
+        if self.id is None:
+            return
+
+        cache_key = "PictureArea.short_html/%d/%s"
+        for lang, langname in settings.LANGUAGES:
+            permanent_cache.delete(cache_key % (self.id, lang))
+
+

     def short_html(self):
     def short_html(self):

-        short_html = unicode(render_to_string(
-                'picture/picturearea_short.html', {'area': self}))
-        return mark_safe(short_html)
+        if self.id:
+            cache_key = "PictureArea.short_html/%d/%s" % (self.id, get_language())
+            short_html = permanent_cache.get(cache_key)
+        else:
+            short_html = None
+    
+        if short_html is not None:
+            return mark_safe(short_html)
+        else:
+            theme = self.tags.filter(category='theme')
+            theme = theme and theme[0] or None
+            thing = self.tags.filter(category='thing')
+            thing = thing and thing[0] or None
+            area = self
+            short_html = unicode(render_to_string(
+                    'picture/picturearea_short.html', locals()))
+            if self.id:
+                permanent_cache.set(cache_key, short_html)
+            return mark_safe(short_html)

 
 
 class Picture(models.Model):
 
 
 class Picture(models.Model):


@@ -66,6 +92,7 @@ class Picture(models.Model):
     title       = models.CharField(_('title'), max_length=120)
     slug        = models.SlugField(_('slug'), max_length=120, db_index=True, unique=True)
     sort_key    = models.CharField(_('sort key'), max_length=120, db_index=True, editable=False)
     title       = models.CharField(_('title'), max_length=120)
     slug        = models.SlugField(_('slug'), max_length=120, db_index=True, unique=True)
     sort_key    = models.CharField(_('sort key'), max_length=120, db_index=True, editable=False)

+    sort_key_author = models.CharField(_('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)
     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)


@@ -76,6 +103,8 @@ class Picture(models.Model):
     culturepl_link   = models.CharField(blank=True, max_length=240)
     wiki_link     = models.CharField(blank=True, max_length=240)
 
     culturepl_link   = models.CharField(blank=True, max_length=240)
     wiki_link     = models.CharField(blank=True, max_length=240)
 

+    _related_info = jsonfield.JSONField(blank=True, null=True, editable=False)
+

     width       = models.IntegerField(null=True)
     height      = models.IntegerField(null=True)
 
     width       = models.IntegerField(null=True)
     height      = models.IntegerField(null=True)
 


@@ -148,8 +177,10 @@ class Picture(models.Model):
             picture.title = unicode(picture_xml.picture_info.title)
             picture.extra_info = picture_xml.picture_info.to_dict()
 
             picture.title = unicode(picture_xml.picture_info.title)
             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()
             motif_tags = set()
             thing_tags = set()

+

             area_data = {'themes':{}, 'things':{}}
 
             for part in picture_xml.partiter():
             area_data = {'themes':{}, 'things':{}}
 
             for part in picture_xml.partiter():


@@ -191,10 +222,9 @@ class Picture(models.Model):
                     logging.debug("coords for theme: %s" % part['coords'])
                     area = PictureArea.rectangle(picture, 'theme', part['coords'])
                     area.save()
                     logging.debug("coords for theme: %s" % part['coords'])
                     area = PictureArea.rectangle(picture, 'theme', part['coords'])
                     area.save()

-                    area.tags = _tags
+                    area.tags = _tags.union(picture_tags)

 
 

-            picture.tags = catalogue.models.Tag.tags_from_info(picture_xml.picture_info) + \
-                list(motif_tags) + list(thing_tags)
+            picture.tags = picture_tags.union(motif_tags).union(thing_tags)

             picture.areas_json = area_data
 
             if image_file is not None:
             picture.areas_json = area_data
 
             if image_file is not None:


@@ -276,13 +306,24 @@ class Picture(models.Model):
     def reset_short_html(self):
         if self.id is None:
             return
     def reset_short_html(self):
         if self.id is None:
             return

+        
+        type(self).objects.filter(pk=self.pk).update(_related_info=None)
+        for area in self.areas.all().iterator():
+            area.reset_short_html()
+
+        try: 
+            author = self.tags.filter(category='author')[0].sort_key
+        except IndexError:
+            author = u''
+        type(self).objects.filter(pk=self.pk).update(sort_key_author=author)

 
 

-        cache_key = "Picture.short_html/%d" % (self.id)
-        get_cache('permanent').delete(cache_key)
+        cache_key = "Picture.short_html/%d/%s"
+        for lang, langname in settings.LANGUAGES:
+            permanent_cache.delete(cache_key % (self.id, lang))

 
     def short_html(self):
         if self.id:
 
     def short_html(self):
         if self.id:

-            cache_key = "Picture.short_html/%d" % (self.id)
+            cache_key = "Picture.short_html/%d/%s" % (self.id, get_language())

             short_html = get_cache('permanent').get(cache_key)
         else:
             short_html = None
             short_html = get_cache('permanent').get(cache_key)
         else:
             short_html = None


@@ -314,3 +355,90 @@ class Picture(models.Model):
         else:
             names = [tag[0] for tag in names]
         return ', '.join(names)
         else:
             names = [tag[0] for tag in names]
         return ', '.join(names)

+
+    def related_info(self):
+        """Keeps info about related objects (tags) in cache field."""
+        if self._related_info is not None:
+            return self._related_info
+        else:
+            rel = {'tags': {}}
+
+            tags = self.tags.filter(category__in=(
+                    'author', 'kind', 'genre', 'epoch'))
+            tags = split_tags(tags)
+            for category in tags:
+                cat = []
+                for tag in tags[category]:
+                    tag_info = {'slug': tag.slug, 'name': tag.name}
+                    for lc, ln in settings.LANGUAGES:
+                        tag_name = getattr(tag, "name_%s" % lc)
+                        if tag_name:
+                            tag_info["name_%s" % lc] = tag_name
+                    cat.append(tag_info)
+                rel['tags'][category] = cat
+            
+
+            if self.pk:
+                type(self).objects.filter(pk=self.pk).update(_related_info=rel)
+            return rel
+
+    # copied from book.py, figure out 
+    def related_themes(self):
+        # self.theme_counter hides a computation, so a line below actually makes sense
+        theme_counter = self.theme_counter
+        picture_themes = list(catalogue.models.Tag.objects.filter(pk__in=theme_counter.keys()))
+        for tag in picture_themes:
+            tag.count = theme_counter[tag.pk]
+        return picture_themes
+
+    def reset_tag_counter(self):
+        if self.id is None:
+            return
+
+        cache_key = "Picture.tag_counter/%d" % self.id
+        permanent_cache.delete(cache_key)
+        if self.parent:
+            self.parent.reset_tag_counter()
+
+    @property
+    def tag_counter(self):
+        if self.id:
+            cache_key = "Picture.tag_counter/%d" % self.id
+            tags = permanent_cache.get(cache_key)
+        else:
+            tags = None
+
+        if tags is None:
+            tags = {}
+            # do we need to do this? there are no children here.
+            for tag in self.tags.exclude(category__in=('book', 'theme', 'thing', 'set')).order_by().iterator():
+                tags[tag.pk] = 1
+
+            if self.id:
+                permanent_cache.set(cache_key, tags)
+        return tags
+
+    def reset_theme_counter(self):
+        if self.id is None:
+            return
+
+        cache_key = "Picture.theme_counter/%d" % self.id
+        permanent_cache.delete(cache_key)
+
+    @property
+    def theme_counter(self):
+        if self.id:
+            cache_key = "Picture.theme_counter/%d" % self.id
+            tags = permanent_cache.get(cache_key)
+        else:
+            tags = None
+
+        if tags is None:
+            tags = {}
+            for area in PictureArea.objects.filter(picture=self).order_by().iterator():
+                for tag in area.tags.filter(category__in=('theme','thing')).order_by().iterator():
+                    tags[tag.pk] = tags.get(tag.pk, 0) + 1
+
+            if self.id:
+                permanent_cache.set(cache_key, tags)
+        return tags