chunks/templatetags/chunks.py

   1 from django import template
   2 from django.db import models
   3 from django.core.cache import cache
   4 from ..models import Chunk, Attachment
   5
   6
   7 register = template.Library()
   8
   9
  10 @register.simple_tag
  11 def chunk(key, cache_time=0):
  12     try:
  13         cache_key = 'chunk_' + key
  14         c = cache.get(cache_key)
  15         if c is None:
  16             c = Chunk.objects.get(key=key)
  17             cache.set(cache_key, c, int(cache_time))
  18         content = c.content
  19     except Chunk.DoesNotExist:
  20         n = Chunk(key=key)
  21         n.save()
  22         return ''
  23     return content
  24
  25
  26 @register.simple_tag
  27 def attachment(key, cache_time=0):
  28     try:
  29         cache_key = 'attachment_' + key
  30         c = cache.get(cache_key)
  31         if c is None:
  32             c = Attachment.objects.get(key=key)
  33             cache.set(cache_key, c, int(cache_time))
  34         return c.attachment.url
  35     except Attachment.DoesNotExist:
  36         return ''
  37
  38