Michael Hipp wrote:
SQLAlchemy seems pretty smart about updating only the changed columns in
an orm object...
If I have an orm object. Something changes one of the columns. Just
before I commit() the session, is there a way to tell which columns will
be updated vs those that are unchanged?
Any way to ascertain the before/after values on those changed columns?
Here's the basics:
http://www.sqlalchemy.org/docs/session.html#session-attributes
These examples should fill in the rest:
http://www.sqlalchemy.org/trac/wiki/UsageRecipes/VersionedMap
http://www.sqlalchemy.org/trac/wiki/UsageRecipes/VersionedRows
http://www.sqlalchemy.org/docs/examples.html?#module-versioning
cheers,
Chris
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