chunks/templatetags/chunks.py

   1 from django import template
   2 from django.db import models
   3 from django.core.cache import cache
   4 from django.utils.safestring import mark_safe
   5 from ..models import Chunk, Attachment
   6
   7
   8 register = template.Library()
   9
  10
  11 @register.simple_tag
  12 def chunk(key, cache_time=0):
  13     try:
  14         cache_key = 'chunk_' + key
  15         c = cache.get(cache_key)
  16         if c is None:
  17             c = Chunk.objects.get(key=key)
  18             cache.set(cache_key, c, int(cache_time))
  19         content = c.content
  20     except Chunk.DoesNotExist:
  21         n = Chunk(key=key)
  22         n.save()
  23         return ''
  24     return mark_safe(content)
  25
  26
  27 @register.simple_tag
  28 def attachment(key, cache_time=0):
  29     try:
  30         cache_key = 'attachment_' + key
  31         c = cache.get(cache_key)
  32         if c is None:
  33             c = Attachment.objects.get(key=key)
  34             cache.set(cache_key, c, int(cache_time))
  35         return c.attachment.url
  36     except Attachment.DoesNotExist:
  37         return ''
  38
  39