selected cites in admin

[wolnelektury.git] / apps / social / templatetags / social_tags.py

diff --git a/apps/social/templatetags/social_tags.py b/apps/social/templatetags/social_tags.py
index 1b26d91..deac93d 100755 (executable)
--- a/apps/social/templatetags/social_tags.py
+++ b/apps/social/templatetags/social_tags.py
@@ -3,8 +3,29 @@
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django import template
-from social.utils import likes
+from catalogue.models import Book
+from social.models import Cite
+from social.utils import likes, cites_for_tags
 
 register = template.Library()
 
 register.filter('likes', likes)
+
+
+@register.inclusion_tag('social/cite_promo.html')
+def cite_promo(ctx=None, fallback=False):
+    """Choose"""
+    if ctx is None:
+        cites = Cite.objects.all()
+    elif isinstance(ctx, Book):
+        cites = ctx.cite_set.all()
+        if not cites.exists():
+            cites = cites_for_tags([ctx.book_tag()])
+    else:
+        cites = cites_for_tags(ctx)
+
+    return {
+        'cite': cites.order_by('?')[0] if cites.exists() else None,
+        'fallback': fallback,
+        'ctx': ctx,
+    }
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