gis: Merged revisions 6525-6613 via svnmerge from [repos:django/trunk trunk].

git-svn-id: http://code.djangoproject.com/svn/django/branches/gis@6615 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 20 insertions, 0 deletions

diff --git a/django/core/cache/backends/filebased.py b/django/core/cache/backends/filebased.py
index d5415c8ace..690193ac81 100644
--- a/django/core/cache/backends/filebased.py
+++ b/django/core/cache/backends/filebased.py
@@ -17,6 +17,26 @@ class CacheClass(SimpleCacheClass):
         del self._cache
         del self._expire_info
 
+    def add(self, key, value, timeout=None):
+        fname = self._key_to_file(key)
+        if timeout is None:
+            timeout = self.default_timeout
+        try:
+            filelist = os.listdir(self._dir)
+        except (IOError, OSError):
+            self._createdir()
+            filelist = []
+        if len(filelist) > self._max_entries:
+            self._cull(filelist)
+        if os.path.basename(fname) not in filelist:
+            try:
+                f = open(fname, 'wb')
+                now = time.time()
+                pickle.dump(now + timeout, f, 2)
+                pickle.dump(value, f, 2)
+            except (IOError, OSError):
+                pass
+
     def get(self, key, default=None):
         fname = self._key_to_file(key)
         try: