Added ru translation (without wl data json fixture -- missing right_column for 'About...

[wolnelektury.git] / apps / chunks / templatetags / chunks.py

diff --git a/apps/chunks/templatetags/chunks.py b/apps/chunks/templatetags/chunks.py
index f79d495..083c48a 100644 (file)
--- a/apps/chunks/templatetags/chunks.py
+++ b/apps/chunks/templatetags/chunks.py
@@ -2,10 +2,12 @@ from django import template
 from django.db import models
 from django.core.cache import cache
 
+
 register = template.Library()
 
 Chunk = models.get_model('chunks', 'chunk')
-CACHE_PREFIX = "chunk_"
+Attachment = models.get_model('chunks', 'attachment')
+
 
 def do_get_chunk(parser, token):
     # split_contents() knows not to split quoted strings.
@@ -23,14 +25,15 @@ def do_get_chunk(parser, token):
     # Send key without quotes and caching time
     return ChunkNode(key[1:-1], cache_time)
 
+
 class ChunkNode(template.Node):
     def __init__(self, key, cache_time=0):
        self.key = key
        self.cache_time = cache_time
-    
+
     def render(self, context):
         try:
-            cache_key = CACHE_PREFIX + self.key
+            cache_key = 'chunk_' + self.key
             c = cache.get(cache_key)
             if c is None:
                 c = Chunk.objects.get(key=self.key)
@@ -41,5 +44,20 @@ class ChunkNode(template.Node):
             n.save()
             return ''
         return content
-        
+
 register.tag('chunk', do_get_chunk)
+
+
+def attachment(key, cache_time=0):
+    try:
+        cache_key = 'attachment_' + key
+        c = cache.get(cache_key)
+        if c is None:
+            c = Attachment.objects.get(key=key)
+            cache.set(cache_key, c, int(cache_time))
+        return c.attachment.url
+    except Attachment.DoesNotExist:
+        return ''
+
+register.simple_tag(attachment)
+