utils: add after_this_request

With after_this_request you can simple set cookies. Used as a decorator,
it registers a function as callback to be executed just before sending
the response to the client. The callback will be executed with the
response object as argument.

1 files changed, 8 insertions, 0 deletions

diff --git a/views.py b/views.py
index 51b17ef..eed49df 100644
--- a/views.py
+++ b/views.py
@@ -13,6 +13,14 @@ def get_group_or_404(*query):
                               Member.user == g.user, *query)
     return group
 
+
+@app.after_request
+def call_after_request_callbacks(response):
+    for callback in getattr(g, 'after_request_callbacks', ()):
+        callback(response)
+    return response
+
+
 @app.route('/', methods=['GET', 'POST'])
 @templated('index.html')
 @auth.login_required