Merge pull request #1851 from prachikhadke/1789-document-flash-limit

Document flash message size limit
9 years ago · 5cf261a287
1 changed files with 3 additions and 1 deletions
--- a/docs/patterns/flashing.rst
+++ b/docs/patterns/flashing.rst
@ -9,7 +9,9 @@ application.  Flask provides a really simple way to give feedback to a
 user with the flashing system.  The flashing system basically makes it
 possible to record a message at the end of a request and access it next
 request and only next request.  This is usually combined with a layout
-template that does this.
+template that does this. Note that browsers and sometimes web servers enforce
+a limit on cookie sizes. This means that flashing messages that are too
+large for session cookies causes message flashing to fail silently.

 Simple Flashing
 ---------------