I think it should check that cache_timeout is not None to allow for a (I hope legale) value of 0 for such parameter.

13 years ago · 4b21e2d38c
1 changed files with 1 additions and 1 deletions
--- a/flask/helpers.py
+++ b/flask/helpers.py
@ -533,7 +533,7 @@ def send_file(filename_or_fp, mimetype=None, as_attachment=False,
    rv.cache_control.public = True
    if cache_timeout is None:
        cache_timeout = current_app.get_send_file_max_age(filename)
-    if cache_timeout:
+    if cache_timeout is not None:
        rv.cache_control.max_age = cache_timeout
        rv.expires = int(time() + cache_timeout)