fixed cache expiration in grid downloads, thanks Niphlod

VERSION

@@ -1 +1 @@
-Version 2.4.1-alpha.2+timestamp.2013.02.04.10.02.48
+Version 2.4.1-alpha.2+timestamp.2013.02.04.15.11.29

gluon/dal.py

@@ -9131,7 +9131,7 @@ class Field(Expression):
             stream = self.uploadfs.open(name, 'rb')
         else:
             # ## if file is on regular filesystem
-            stream = open(pjoin(file_properties['path'], name), 'rb')
+            stream = pjoin(file_properties['path'], name)
         return (filename, stream)
 
     def retrieve_file_properties(self, name, path=None):

gluon/globals.py

@@ -308,8 +308,8 @@ class Response(Storage):
         chunk_size=DEFAULT_CHUNK_SIZE,
         request=None,
         attachment=False,
-        filename=None,
+        filename=None
-    ):
+        ):
         """
         if a controller function::
 
@@ -403,8 +403,8 @@ class Response(Storage):
             raise HTTP(404)
         headers = self.headers
         headers['Content-Type'] = contenttype(name)
-	if download_filename == None:
+        if download_filename == None:
-	    download_filename = filename
+            download_filename = filename
         if attachment:
             headers['Content-Disposition'] = \
                 'attachment; filename="%s"' % download_filename.replace('"','\"')

gluon/streamer.py

@@ -46,8 +46,8 @@ def stream_file_or_304_or_206(
     request=None,
     headers={},
     status=200,
-    error_message=None,
+    error_message=None
-):
+    ):
     if error_message is None:
         error_message = rewrite.THREAD_LOCAL.routes.error_message % 'invalid request'
     try: