Chaouche, Thank you for information. At the instance level, how will I know whether the instance going to be deleted or updated or insert. How do I get the property?
And during update, how to identify which field has been modified? Regards, Krish On Nov 3, 6:30 pm, chaouche yacine <yacinechaou...@yahoo.com> wrote: > http://www.sqlalchemy.org/docs/orm/examples.html?highlight=versioning... > > You can find other interesting recipes in : > > http://www.sqlalchemy.org/trac/wiki/UsageRecipes > > Cheers, > > Y.Chaouche > > ----- Original Message ---- > From: Gopalakrishnan Subramani <gopalakrishnan.subram...@gmail.com> > To: sqlalchemy <sqlalchemy@googlegroups.com> > Sent: Wed, November 3, 2010 5:21:32 AM > Subject: [sqlalchemy] AuditLog/History logging > > We have around 10 different tables in the database and we use > sqlalchemy's declarative base style table definition. We are happy > about it. > > Now we need to have auditlog/history of changes made to database > records. > > For example, the entry could be new recorded added or existing record > updated or deleted. These information should be reflected in the > database table called "history". > > So we end up writing very simular code for every tables in our > database for each crud operation. > > I am thinking whether we can have simplified solution like > > 1. We define our own custom class derived from declarative_base > instance > 2. We derive the rest of our classes from our own custom class > mentioned in the step 1 > 3. Whenever there is changes in the record, Sqlalchemy to give > callback on post/pre operation and we capture those changes in the > derived class and use the history class to write the changes to the > database. > > So we can derive all our future classes from this model and I will be > free to handle the rest of the information. > > Can you please help me to implement this? > > Regards, > > Krisj > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To post to this group, send email to sqlalch...@googlegroups.com. > To unsubscribe from this group, send email to > sqlalchemy+unsubscr...@googlegroups.com. > For more options, visit this group > athttp://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
