From 3a13047fb06d698e0440895281c484199e0a95a5 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Mon, 3 Jun 2013 18:23:23 -0400
Subject: Fixed bug where :class:`.MutableDict` didn't report a change event
 when ``clear()`` was called. [ticket:2730]

---
 lib/sqlalchemy/ext/mutable.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/sqlalchemy')

diff --git a/lib/sqlalchemy/ext/mutable.py b/lib/sqlalchemy/ext/mutable.py
index b1b851f72..ca27f172f 100644
--- a/lib/sqlalchemy/ext/mutable.py
+++ b/lib/sqlalchemy/ext/mutable.py
@@ -616,6 +616,10 @@ class MutableDict(Mutable, dict):
         dict.__delitem__(self, key)
         self.changed()
 
+    def clear(self):
+        dict.clear(self)
+        self.changed()
+
     @classmethod
     def coerce(cls, key, value):
         """Convert plain dictionary to MutableDict."""
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