diff options
Diffstat (limited to 'lib/sqlalchemy/attributes.py')
| -rw-r--r-- | lib/sqlalchemy/attributes.py | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/sqlalchemy/attributes.py b/lib/sqlalchemy/attributes.py index bea125371..08178324f 100644 --- a/lib/sqlalchemy/attributes.py +++ b/lib/sqlalchemy/attributes.py @@ -65,6 +65,8 @@ class PropHistory(object): self.extension = extension def gethistory(self, *args, **kwargs): return self + def clear(self): + del self.obj.__dict__[self.key] def history_contains(self, obj): return self.orig is obj or self.obj.__dict__[self.key] is obj def setattr_clean(self, value): @@ -314,7 +316,8 @@ class AttributeManager(object): pass def remove(self, obj): - """not sure what this is.""" + """called when an object is totally being removed from memory""" + # currently a no-op since the state of the object is attached to the object itself pass def create_history(self, obj, key, uselist, callable_=None, **kwargs): @@ -350,6 +353,8 @@ class AttributeManager(object): When the attribute is next accessed, a new container will be created via the class-level history container definition.""" try: + x = self.attribute_history(obj)[key] + x.clear() del self.attribute_history(obj)[key] except KeyError: pass |