basic integrity check,

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

diff --git a/apps/chunks/models.py b/apps/chunks/models.py
index 86f0466..ef244eb 100644 (file)
--- a/apps/chunks/models.py
+++ b/apps/chunks/models.py
@@ -1,3 +1,4 @@
+from django.core.cache import cache
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 
@@ -15,15 +16,23 @@ class Chunk(models.Model):
         ordering = ('key',)
         verbose_name = _('chunk')
         verbose_name_plural = _('chunks')
-    
+
     def __unicode__(self):
         return self.key
 
+    def cache_key(self):
+        return 'chunk_' + self.key
+
+    def save(self, *args, **kwargs):
+        ret = super(Chunk, self).save(*args, **kwargs)
+        cache.delete(self.cache_key())
+        return ret
+
 
 class Attachment(models.Model):
     key = models.CharField(_('key'), help_text=_('A unique name for this attachment'), primary_key=True, max_length=255)
     attachment = models.FileField(upload_to='chunks/attachment')
-    
+
     class Meta:
         ordering = ('key',)
         verbose_name, verbose_name_plural = _('attachment'), _('attachments')